Checking and filling for Your Volkswagen Jetta 4 Door Seventh Generation (2019-2025)

Checking and filling  
In the hood space  
Safety precautions for working in the hood space  
The hood space of a vehicle is a dangerous area. Only perform work in the hood space if you are familiar with the necessary  
activities and the general safety precautions, and if the correct operating equipment, fluids and suitable tools are available.  
Work performed incorrectly can result in serious injuries ⇒  
. Have all work performed by suitably qualified professionals if  
necessary. Volkswagen recommends contacting an authorized Volkswagen dealer or authorized Volkswagen Service Facility.  
WARNING  
The hood space is a dangerous area. Any work in the hood space could lead to accidents and serious or fatal injuries.  
Always work as cautiously and carefully as possible.  
Do not perform work in the hood space unless you are familiar with the required activities.  
If you are not sure how to do the work in the hood space, have the work required carried out by suitably qualified  
professionals. Volkswagen recommends contacting an authorized Volkswagen dealer or authorized Volkswagen  
Service Facility.  
Set the electronic parking brake before working in the hood space.  
Move the selector lever to the selector lever position.  
Or: move the gearshift lever to the neutral position.  
Switch off the ignition and store the remote control vehicle key securely and far enough away from the vehicle to  
ensure that the engine cannot be started accidentally.  
Never touch hot components in the engine.  
Do not leave any items, such as cleaning cloths or tools, in the hood space.  
Always keep children away from the hood space and never leave them unattended.  
WARNING  
The hood space contains moving components. When working in the hood space, particularly when starting the vehicle or  
if the engine is running, contact with moving parts, e.g. fan blades in the radiator fan, may cause serious or fatal injuries.  
Never reach into the radiator fan or into the area near the radiator fan, even if the engine is switched off or the  
ignition is switched off. The ventilator is temperature-controlled and may switch on by itself.  
Always remove any jewelry and/or ties, tie back long hair, and avoid wearing loose-fitting clothing when performing  
work.  
Always press the accelerator pedal extremely carefully and never press it without paying close attention. The  
vehicle could begin moving, even if the electronic parking brake is set.  
WARNING  
Escaping hot steam or hot coolant and hot components may cause serious burns.  
Never open or close the hood if steam or coolant are escaping.  
Always wait until you can no longer see or hear steam or coolant escaping from the hood space.  
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WARNING  
The cooling system is under pressure when the engine is hot. If the cover is opened carelessly, coolant may spray out and  
cause serious burns or fatal injuries.  
Never open the cap of the coolant expansion tank when the engine is hot.  
Always protect your face, hands and arms from hot coolant or steam with a large, thick cloth if you have to open the  
cap of the coolant expansion tank.  
Slowly and very carefully turn the cap of the coolant expansion tank counterclockwise while pressing down lightly  
on the cap.  
WARNING  
Additional insulation, such as blankets in the hood space or discarded items such as cleaning cloths or tools, can cause  
malfunctions, damage to the engine, or fires. This could result in serious or fatal injuries.  
Never cover the engine with blankets or other insulating materials.  
Never leave items in the hood space.  
Always park the vehicle safely on a horizontal and firm surface before carrying out any work in the hood space ⇒  
⇒ Parking.  
,
WARNING  
If the vehicle is not secured against rolling away during maintenance procedures, the vehicle may move unintentionally.  
This could result in accidents and serious or fatal injuries.  
Manually deactivate the start-stop system.  
Never carry out any work underneath the vehicle unless it is adequately secured to prevent it from rolling.  
Ensure that the vehicle is situated on a horizontal and firm surface and that the wheels are blocked to prevent  
them from moving when carrying out work underneath the vehicle with its wheels touching the ground.  
If you are working underneath the vehicle, additionally support the vehicle securely with suitable stands. The  
vehicle jack is not sufficient for this purpose and may collapse.  
WARNING  
The high voltage in the electrical system may cause electric shocks and burns. This could result in serious or fatal injuries.  
Never short-circuit the electrical system. The 12 V vehicle battery could explode.  
Preparing the vehicle for work in the hood space  
Always perform the following activities in the specified sequence before all work in the hood space:  
1. Safely park the vehicle on a horizontal and firm surface ⇒ Parking.  
2. Secure the vehicle against rolling away.  
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3. Remove the remote control vehicle key from the vehicle and store it outside of the vehicle, so that the vehicle does not  
start accidentally.  
4. Let the engine cool down sufficiently.  
5. Always keep other people away from the hood space.  
Opening and closing the hood  
Fig. 160 In the driver's side footwell: Release lever for the hood (general example).  
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Fig. 161 In the hood space: Hood support in the bracket.  
Fig. 162 On the engine hood: Hood support bracket.  
Opening the hood  
1. Open the driver door and pull the release lever in the direction of the arrow fig. 160.  
The hood will pop open due to spring force from the catch in the lock carrier ⇒  
.
2. To open the hood fully, slightly lift the hood while pushing the actuating lever in the direction of the arrow.  
3. Remove the hood support from the bracket in the direction of the arrow fig. 161 and insert it into the holder for the hood  
support fig. 162.  
Closing the hood  
1. Lift the hood slightly and hold it ⇒  
.
2. Unhook the hood support from the holder for the hood support fig. 162 and insert it into the bracket fig. 161.  
3. Allow the hood to fall out approx. 20 cm (approx. 8 inches) into the catch of the lock carrier, without pressing down on it.  
When the hood is closed correctly, it will be flush with the surrounding sections of the vehicle body ⇒  
.
WARNING  
If the hood is not closed correctly, it could open suddenly while driving and block the view through the windshield.  
Accidents and serious or fatal injuries could result.  
After closing the hood, check that the catch is engaged correctly in the lock carrier.  
If you realize when driving that the hood is not closed properly, park the vehicle safely and close the hood.  
WARNING  
Failing to take care when opening and closing the hood can result in serious injuries.  
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Do not open or close the hood if any persons are in the closing range of the hood.  
NOTICE  
Opening and closing the hood incorrectly can cause damage to the hood or wiper arms.  
Only open the hood when wiper mode is switched off and with the windshield wipers folded in.  
Always fold the wiper arms against the windshield before driving.  
Indicator for opened engine hood  
Fig. 163 In the instrument cluster display: the hood is open or not closed correctly (general example).  
An image in the instrument cluster display indicates if the hood is open or has not closed correctly ⇒  
Do not continue driving!  
.
1. Stop the vehicle as soon as it is safe to do so.  
2. If necessary, lift the hood and close it again.  
The image is also displayed when the ignition is switched off and it disappears several seconds after the doors are closed and  
the vehicle is locked.  
WARNING  
Disregarding warning notifications could lead to breakdowns while driving, accidents and serious or fatal injuries.  
Never ignore warning notifications.  
Stop the vehicle as soon as it is safe to do so.  
Do not continue driving and seek professional assistance if the warning light does not go out.  
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Operating fluids and operating equipment  
All operating fluids and operating equipment, such as coolant, engine oil and vehicle batteries, are continuously being  
developed.  
1. Have fluids and operating equipment replaced by suitably qualified professionals. Volkswagen recommends contacting an  
authorized Volkswagen dealer or authorized Volkswagen Service Facility.  
WARNING  
Carrying out work on the fuel system may cause fires and serious or fatal injuries due to electrical discharge and flying  
sparks.  
Always disconnect the 12 V vehicle battery.  
Always have a fully-functioning, checked fire extinguisher nearby.  
Make sure that the vehicle is unlocked when the 12 V vehicle battery is disconnected. Otherwise, the anti-theft  
alarm system will be activated.  
WARNING  
Fluids may be poisonous. Improper use and storage may cause serious or fatal injuries.  
Only store fluids in their sealed original containers.  
Never use empty food cans, bottles, or other containers to store fluids, because someone could drink the fluids by  
mistake.  
Keep children away from all fluids and operating equipment.  
Always read and heed the information and warnings on the packaging for the fluids.  
When using products that emit harmful vapors, always work outdoors or in a well-ventilated area.  
WARNING  
Fluids and some materials in the hood space are highly flammable and may ignite on contact with hot surfaces, sparks, or  
naked flames. This can lead to a fire and cause accidents and serious or fatal injuries.  
Never smoke near the hood space.  
Never work near open flames or sparks.  
Never perform work near sources of heat, boilers, or other open flames.  
Never pour or spill fluids on the engine.  
Always have a fully-functioning, checked fire extinguisher nearby.  
NOTICE  
The use of fluids that do not correspond to the specification can cause serious malfunctions and damage to the engine.  
When topping up or changing fluids, make sure that the fluids correspond to the respective specification.  
Only fill fluids into the designated filler openings.  
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Fluids leaking from the vehicle can cause environmental damage.  
Regularly check the ground beneath the vehicle.  
If you see spots of fluid on the ground under the vehicle, have the vehicle checked by an authorized Volkswagen  
dealer or authorized Volkswagen Service Facility. Volkswagen recommends contacting an authorized Volkswagen  
dealer or authorized Volkswagen Service Facility.  
Dispose of leaking fluids according to legal and environmental regulations.  
Washer fluid  
General information  
The windshield washer fluid reservoir is located in the hood space.  
Fig. 164 In the hood space: Cap on the washer fluid reservoir (general example).  
The washer fluid reservoir is identified with the  
symbol on the cap fig. 164.  
1. Check the washer fluid level regularly and fill if necessary.  
Preparations  
1. Prepare the vehicle for work in the hood space → page , In the hood space.  
2. Open the hood.  
Checking and refilling  
1. Check if there is enough washer fluid in the reservoir.  
2. To top it up, mix clean water with a suitable alcohol-based windshield cleaner. Follow the mixing instructions on the  
packaging of the windshield cleaner ⇒  
, ⇒  
.
3. When the outside temperatures are cold, an anti-freeze agent should be added to the water so that it does not freeze.  
Follow the mixing instructions on the packaging of the anti-freeze agent.  
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There is a screen in the filler tube in the windshield washer fluid reservoir. The screen keeps large particles of contaminants  
from entering the washer nozzles when you refill the washer fluid ⇒  
.
Depending on the vehicle equipment and the vehicle, the washer fluid reservoir filling quantity is approximately 3.0 to 6.0 l  
(approximately 3.1 to 6.3 qt).  
Do not use distilled water to fill the windshield washer fluid tank. This is the only way that the windscreen wiper washer  
fluid level can be monitored.  
WARNING  
Unsuitable additives in the windshield washer fluid can create an oily film on the vehicle windshield. This may reduce  
visibility and increase the risk of accidents and serious or fatal injuries.  
Never add coolant additive or similar unsuitable additives to the windshield washer fluid.  
NOTICE  
Using a cleaning agent that contains acid may result in damage and cause the spray nozzles to malfunction.  
Never top up the windshield washer fluid tank using a cleaning agent that contains acid, e.g. vinegar-based  
cleaners.  
NOTICE  
Mixing different windshield cleaners can cause the components to flocculate and the spray nozzles to clog.  
Only use suitable alcohol-based windshield cleaners.  
Never mix different windshield cleaners together.  
NOTICE  
When you top up the windshield washer fluid, if you use a damaged screen or do not use a screen at all, dirt particles may  
get into the windshield washer fluid tank. The spray nozzles may become clogged.  
Take the screen out only to clean it.  
Replace a damaged or missing screen.  
Engine oil  
Introduction  
The engine oils are determined based on the requirements of the engines, emissions control systems, and the fuel quality. On  
all combustion engines, the engine oil comes into contact with combustion residue and fuel, which affects the aging of the  
engine oil. Using the correct engine oil is essential for the function and service life of the engine. The vehicle is filled at the  
factory with a special multi-purpose, low-viscosity oil that can generally be used year-round.  
The vehicle can consume engine oil. The engine oil consumption can vary and can change throughout the service life of the  
vehicle. Depending on the driving style and the usage conditions, the engine oil consumption can be up to 1 l (1 qt) per  
2000 kilometers (approximately 1200 miles); it can also be higher within the first 5000 kilometers (approximately 3100 miles)  
on new vehicles. Because of this, the engine oil level must be checked regularly and it is best to check the level before long  
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drives.  
WARNING  
Engine oil gets extremely hot when the engine is running. Failure to take care when handling hot engine oil can cause  
serious bodily burns. This could result in serious or fatal injuries.  
Always allow the engine to cool down before starting work with the engine oil.  
WARNING  
Engine oil is poisonous. Contact with engine oil, especially swallowing engine oil, may result in serious or fatal injuries.  
If you swallow engine oil, seek urgent medical help.  
If you have health problems after working with engine oil, seek medical help.  
Always store engine oil in the sealed original container and keep it out of the reach of children. This also applies to  
used oil until it is disposed.  
Never use empty food cans, bottles, or other containers to store engine oil, because someone could drink the  
engine oil by mistake.  
Avoid regular contact with engine oil to prevent damage to your skin.  
Protect your skin, face and particularly your eyes when working with engine oil.  
Do not eat, drink or smoke when working with engine oil.  
Wash your skin with soap and water after working with engine oil.  
Engine oil that has dripped and spilled can pollute the environment.  
Collect any leaking fluids and dispose of them according to legal and environmental regulations.  
Engine oil standards  
Please read the introductory information and heed the Warnings and Notice ⇒  
hood space.  
Safety precautions for working in the  
Engine oil label  
There is a label on the lock carrier at the front of the hood space that shows which engine oil should be added fig. 165.  
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Fig. 165 Area for the engine oil label (general example).  
If you need to top up the engine oil, use an oil with the prescribed engine oil standard and engine oil viscosity fig. 166.  
Fig. 166 Engine oil standard and engine oil viscosity label (general example).  
Engine oil viscosity information.  
Engine oil standard information.  
If the prescribed engine oil is used fig. 166, the engine oil level can be corrected any number of times as needed ⇒ Checkin  
the engine oil level and adding oil.  
If no engine oil that meets the prescribed standard is available, you may, in an emergency, top up the engine oil no more than  
once before your next standard oil change using no more than 0.5 l (0.5 qt) of engine oil that meets the following deviating  
standards:  
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Gasoline engines: VW standard 504 00 and ACEA C3, ACEA C4, API SP or ILSAC GF-6A. All viscosity classes in these  
standards are permitted.  
Having the oil change carried out by an authorized Volkswagen dealer or authorized Volkswagen Service Facility is  
recommended. Volkswagen recommends contacting an authorized Volkswagen dealer or authorized Volkswagen Service  
Facility.  
NOTICE  
Using engine oils that have not been approved in accordance with the respective VW standard can cause damage to the  
engine.  
When refilling, only use engine oils that comply with the quality requirements of the respectively applicable VW  
standard.  
Only if you absolutely must, add max. 0.5 l (0.5 qt) of engine oil that does not comply with the specified engine oil  
standards.  
Volkswagen recommends Volkswagen Genuine oil.  
Changing the engine oil  
Please read the introductory information and heed the Warnings and Notice ⇒  
Safety precautions for working in the  
hood space.  
The engine oil must be changed regularly and in line with the service intervals ⇒ Information About Service.  
Additives in the engine oil can make new engine oil appear dark after a brief engine run time. This is normal and is no reason  
to change the engine oil more frequently.  
WARNING  
If care is not taken when changing engine oil, the oil can cause environmental damage, serious burns, or fire. This could  
result in serious or fatal injuries.  
Always allow the engine to cool down completely before the engine oil change.  
Always wear eye protection for the engine oil change.  
Keep your arms horizontal when using your fingers to unscrew the oil drain plug, so that the draining oil does not  
drip down your arm.  
Use a container suitable for collecting used oil that can hold at least the entire quantity of oil in the engine.  
NOTICE  
Changing the engine oil and filter requires special tools and specialist knowledge. Failing to act properly may cause  
damage to the vehicle.  
For this reason, always have the engine oil and filters changed by an authorized Volkswagen dealer or authorized  
Volkswagen Service Facility. Volkswagen recommends contacting an authorized Volkswagen dealer or authorized  
Volkswagen Service Facility.  
Engine oil can pollute the environment. Dispose of the engine oil according to legal and environmental regulations and  
only at a collection point for used oil, e.g. a recycling center or specialist retailer.  
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Checking the engine oil level and adding oil  
Please read the introductory information and heed the Warnings and Notice ⇒  
hood space.  
Safety precautions for working in the  
Preparations  
Fig. 167 In the hood space: engine oil filler cap (general example).  
To avoid an incorrect oil level reading, perform the following steps:  
1. With the engine warm from operation, safely park the vehicle on a horizontal and firm surface ⇒ Parking.  
2. Wait at least five minutes for the engine oil to flow back into the oil pan.  
3. Open the hood.  
4. Find the engine oil filler and the dipstick.  
You can identify these by the  
fig. 167 symbol on the engine oil filler cap and the colored handle on the oil dipstick.  
Checking the engine oil level  
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Fig. 168 Engine oil level markings on the oil dipstick (versions).  
The engine oil level is too high.  
Oil level in the normal range.  
The engine oil level is too low.  
1. Remove the dipstick from the guide tube and wipe the dipstick off using a clean cloth.  
2. Reinsert the dipstick into the guide tube and push it all the way in. If there is an alignment tab on the top of the engine oil  
dipstick, make sure it lines up with the notch in the guide tube, and that the dipstick goes all the way in.  
3. Remove the dipstick again and read the oil level on the dipstick as described below fig. 168:  
The engine oil level is too high. If necessary, follow the messages in the instrument cluster display or contact an  
authorized Volkswagen dealer or authorized Volkswagen Service Facility ⇒  
Oil level in the normal range. Engine oil can be added up to the upper edge of this area, for example if there is heavy  
engine load.  
.
The engine oil level is too low. Add engine oil immediately.  
4. After reading the oil level, reinsert the oil dipstick into the guide tube and push it all the way in.  
For high vehicle loads, for example when driving long distances on highways in the summer or when driving through high  
mountains, the engine oil level should be in the upper section of the permitted area.  
Adding engine oil  
WARNING  
When topping up, engine oil can spill out or overflow and can ignite if it comes into contact with engine parts that are hot or  
can become hot. This may cause burns or a fire. This could result in serious or fatal injuries.  
Always make sure that the engine oil cap is installed securely on the engine filler opening after adding oil and that  
the oil dipstick is inserted correctly in the guide tube.  
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Always use a suitable filling aid when topping up the engine oil.  
Only perform these activities in the specified order ⇒  
1. Remove the cap on the engine oil filler fig. 167.  
⇒
:
2. Top up the engine oil gradually in small quantities, not more than 0.5 l (0.5 qt), or follow the recommendation in the displa  
of the Volkswagen Digital Cockpit. Volkswagen recommends using the approved engine oils in accordance with the  
respective VW standard.  
3. To avoid overfilling, you must wait at least one minute each time you add engine oil so that the engine oil can flow into the  
oil pan up to the marking on the oil dipstick.  
4. Read the oil level on the dipstick again before adding a little more. When you are done adding oil, the oil level should be i  
the center of area fig. 168  
.
5. If you accidentally add too much engine oil and the engine oil level is in area fig. 168  
, do not start the engine ⇒  
.
Contact an authorized Volkswagen dealer or authorized Volkswagen Service Facility for assistance.  
6. Close the cap on the engine oil filler when you are done adding engine oil.  
7. Insert the oil dipstick all the way into the guide tube. If there is an alignment tab on the top of the engine oil dipstick, make  
sure it lines up with the notch in the guide tube, and that the dipstick goes all the way in.  
8. Close the hood.  
NOTICE  
Starting the engine with the engine oil level too high after refilling can cause engine damage.  
Do not start the engine, and seek professional assistance.  
NOTICE  
Using incorrect fluids can result in malfunctions and engine damage.  
When topping up fluids, make sure the correct fluids are added to the correct reservoirs.  
Volkswagen recommends using the approved engine oils in accordance with the respective VW standard.  
If you are not sure where the cap and the oil dipstick are located, contact an authorized Volkswagen dealer or authorized  
Volkswagen Service Facility for assistance. Volkswagen recommends contacting an authorized Volkswagen dealer or  
authorized Volkswagen Service Facility.  
Troubleshooting  
Please read the introductory information and heed the Warnings and Notice ⇒  
hood space.  
Safety precautions for working in the  
Engine oil pressure too low  
The red warning light blinks. A message is shown in the instrument cluster display.  
Do not continue driving! Engine damage could result.  
1. Stop the vehicle as soon as it is safe to do so ⇒ Parking.  
2. Stop the engine.  
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3. Check the engine oil level ⇒ Checking the engine oil level and adding oil .  
4. If the warning light flashes, do not continue driving or let the engine run, even if the oil is at the correct level. Engine  
damage could result. Contact an authorized Volkswagen dealer or authorized Volkswagen Service Facility for assistance.  
Engine oil level very low  
The red warning light blinks. A message is shown in the instrument cluster display.  
Do not continue driving! Engine damage could result.  
1. Stop the vehicle as soon as it is safe to do so ⇒ Parking.  
2. Stop the engine.  
3. Check the engine oil level ⇒ Checking the engine oil level and adding oil .  
4. If necessary, top up the engine oil gradually in small quantities (not more than 0.5 l (0.5 qt) in total) or observe the top-up  
recommendation in the display of the Volkswagen Digital Cockpit.  
5. If the warning light lights up, do not continue driving or let the engine run, even if the oil is at the correct level. Engine  
damage could result. Contact an authorized Volkswagen dealer or authorized Volkswagen Service Facility for assistance.  
Engine oil level too low  
The yellow indicator light turns on. A message is shown in the instrument cluster display.  
1. Stop the vehicle as soon as it is safe to do so ⇒ Parking.  
2. Stop the engine.  
3. Check the engine oil level ⇒ Checking the engine oil level and adding oil .  
4. If necessary, top up the engine oil gradually in small quantities (not more than 0.5 l (0.5 qt) in total) or observe the top-up  
recommendation in the display of the Volkswagen Digital Cockpit.  
5. If the indicator light comes on, do not continue driving or let the engine run, even if the oil is at the correct level. Engine  
damage could result. Contact an authorized Volkswagen dealer or authorized Volkswagen Service Facility for assistance.  
Engine oil level too high  
The yellow indicator light turns on. A message is shown in the instrument cluster display.  
1. Stop the vehicle as soon as it is safe to do so ⇒ Parking.  
2. Stop the engine.  
3. Check the engine oil level ⇒ Checking the engine oil level and adding oil .  
4. If the engine oil level is too high, do not drive any further or leave the engine running. Engine damage could result. Contac  
an authorized Volkswagen dealer or authorized Volkswagen Service Facility for assistance.  
or  
Engine oil system malfunction  
The indicator light flashes yellow. A message is shown in the instrument cluster display.  
1. Contact a suitably qualified professional. Volkswagen recommends contacting an authorized Volkswagen dealer or  
authorized Volkswagen Service Facility.  
Coolant  
Introduction  
Only perform work on the cooling system if you are familiar with the necessary activities and the general safety precautions,  
376  
and if the correct operating equipment, fluids and suitable tools are available. Work performed incorrectly can result in serious  
injuries ⇒ . Have all work performed by suitably qualified professionals if necessary. Volkswagen recommends contacting  
an authorized Volkswagen dealer or authorized Volkswagen Service Facility.  
WARNING  
Coolant is toxic. Contact with coolant, especially swallowing coolant, may result in serious or fatal injuries.  
If you swallow coolant, seek urgent medical help.  
If you have health problems after working with coolant, seek medical help.  
Always store coolant in the sealed original container and keep it out of the reach of children.  
Never use empty food cans, bottles, or other containers to store coolant, because someone could drink the coolant  
by mistake.  
Avoid regular contact with coolant to prevent damage to your skin.  
Protect your skin, face and particularly your eyes when working with coolant.  
Do not eat, drink or smoke when working with coolant.  
Wash your skin with soap and water after working with coolant.  
WARNING  
In extremely low temperatures, the coolant can freeze and the vehicle could break down. This can cause the heating to  
stop working in the vehicle. Vehicle occupants could die of exposure if they do not have sufficient warm clothing.  
Make sure that the quantity of coolant additive is adjusted to the lowest expected ambient temperature in which the  
vehicle is operating.  
Only use coolant additive approved by the manufacturer.  
Coolant and coolant additives can pollute the environment.  
Collect any leaking fluids and dispose of them according to legal and environmental regulations.  
Coolant specification  
Please read the introductory information and heed the Warnings and Notice ⇒  
hood space.  
Safety precautions for working in the  
The cooling system is filled at the factory with a mixture of specially prepared water and at least 40% coolant additive G12evo  
(TL 744-L).  
The proportion of coolant additive must always be at least 40% to protect the cooling system. If greater freeze protection is  
needed due to the climate, the proportion of coolant additive can be increased. However, the proportion of coolant additive  
must not exceed 55%, because otherwise the freeze protection will be reduced and the cooling effect will be decreased.  
The coolant additive can be recognized by its violet color. The mixture of water and coolant additive provides freeze protection  
down to approx. -25 °C (approx. -13 °F), protects the light-alloy parts in the cooling system against corrosion, prevents calcium  
deposits and significantly increases the boiling point of the coolant.  
If the coolant is being topped up, a blend of distilled water and at least 40% of the G12evo coolant additive must be used to  
ensure optimum corrosion protection ⇒  
.
NOTICE  
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The coloring of the coolant results from the mixture of the purple coolant additive and distilled water. If the fluid in the  
coolant expansion tank is not purple, but another color, e.g. brown, the appropriate coolant has been mixed with another  
coolant that is not suitable. This may result in serious malfunctions or damage to the drive and cooling system.  
Only use coolant additive approved by the manufacturer.  
If the coolant turns brown, have it changed immediately by a suitably qualified professional. Volkswagen  
recommends contacting an authorized Volkswagen dealer or authorized Volkswagen Service Facility.  
Never mix original Volkswagen coolant additives with coolant additives that are not approved by Volkswagen when  
topping up.  
NOTICE  
The engine coolant must always have a correct mixing ratio. If the mixing ratio is not correct, this may result in serious  
malfunctions or damage to the drive and cooling system.  
Have the correct mixing ratio checked by a suitably qualified professional, and restore if necessary, i.e. if there is  
doubt about the mixing ratio. Volkswagen recommends contacting an authorized Volkswagen dealer or authorized  
Volkswagen Service Facility.  
Checking the coolant level and refilling coolant  
Please read the introductory information and heed the Warnings and Notice ⇒  
hood space.  
Safety precautions for working in the  
Preparations  
1. Safely park the vehicle on a horizontal and firm surface ⇒ Parking.  
2. Allow the engine to cool ⇒  
.
3. Open the hood.  
The coolant expansion tank can be identified by the red  
symbol on the cap fig. 169.  
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Fig. 169 In the hood space: cap of the coolant expansion tank (general example).  
WARNING  
Escaping hot steam or hot coolant and hot components may cause serious burns.  
Never open the hood if you can see or hear steam or coolant escaping from the hood space.  
Always wait until you can no longer see or hear steam or coolant escaping from the hood space.  
WARNING  
The cooling system is under pressure when the engine is hot. If the cover is opened carelessly, coolant may spray out and  
cause serious burns or fatal injuries.  
Never open the cap of the coolant expansion tank when the engine is hot.  
Always protect your face, hands, and arms from hot coolant or steam with a large, thick cloth if you have to open  
the cap of the coolant expansion tank.  
Slowly and very carefully turn the cap of the coolant expansion tank counterclockwise while pressing down lightly  
on the cap.  
Checking the coolant level  
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Fig. 170 In the hood space: markings on the coolant expansion tank (general example).  
When new vehicles are delivered or after repairs to the cooling system, the coolant level may be above the marked area. This  
is normal. The coolant does not need to be extracted.  
The coolant level cannot be checked exactly for every model, because the view of the fluid level in the coolant expansion tank  
may be obstructed. If you cannot read off the coolant level accurately, contact a suitably qualified professional. Volkswagen  
recommends contacting an authorized Volkswagen dealer or authorized Volkswagen Service Facility.  
1. When it is cold, check the coolant level using the markings on the side of the coolant expansion tank fig. 170. The coola  
level must be between the markings.  
2. If the fluid level in the coolant expansion tank is below the minimum mark (“min”), ensure that the coolant is topped up.  
When the coolant is warm, the coolant level may be slightly above the upper marking.  
3. If coolant is no longer visible in the coolant expansion tank, do not add coolant ⇒  
.
Refilling coolant  
1. Carefully unscrew the cap ⇒  
.
2. Only add new coolant that conforms to the Volkswagen specification up to as far as the upper fill level marking. ⇒ Coola  
specification. After topping up the coolant, the coolant level must be between the markings on the coolant expansion tank  
fig. 170.  
3. Install the cap securely.  
4. Check the coolant level after one day. If the fill level of the coolant expansion tank drops below the minimum marking  
(“min”) again, contact an authorized Volkswagen dealer or authorized Volkswagen Service Facility and have the cooling  
system checked. Volkswagen recommends contacting an authorized Volkswagen dealer or authorized Volkswagen  
Service Facility.  
If there is no coolant available that conforms to the required specification, initially only top up with distilled water. Then have  
the correct mixture ratio using the specified coolant additive restored as soon as possible by a suitably qualified professional.  
Volkswagen recommends contacting an authorized Volkswagen dealer or authorized Volkswagen Service Facility ⇒  
.
380  
NOTICE  
Coolant expands when it heats up. If coolant is topped up above the marked level, excess coolant may leak out and  
cause damage to the vehicle.  
Do not refill the system with coolant above the upper edge of the marked area of the coolant expansion tank.  
NOTICE  
If there is no more coolant in the coolant expansion tank, air can get into the cooling system. This could result in damage  
to the engine.  
Do not continue driving.  
Do not top up the coolant.  
See an authorized Volkswagen dealer or authorized Volkswagen Service Facility for assistance.  
NOTICE  
The chemical components contained in water that is not distilled can cause considerable corrosion damage in the engine.  
This can cause engine malfunctions.  
Only use distilled water for refilling the system!  
If you have added water that is not distilled, have the fluid in the cooling system changed completely by suitably  
qualified professionals. Volkswagen recommends contacting an authorized Volkswagen dealer or authorized  
Volkswagen Service Facility.  
NOTICE  
The use of incorrect fluids can cause serious malfunctions and damage to the engine.  
When filling or changing fluids, make sure the correct fluids are added to the corresponding reservoirs.  
Troubleshooting  
Please read the introductory information and heed the Warnings and Notice ⇒  
hood space.  
Safety precautions for working in the  
Coolant  
The red warning light blinks. The coolant temperature is too high or the coolant level is too low.  
Do not continue driving! Engine damage could result.  
1. Stop the vehicle as soon as it is safe to do so ⇒ Parking.  
2. Stop the engine.  
3. Allow the engine to cool.  
4. Check the coolant level on the coolant expansion tank ⇒ Checking the coolant level and refilling coolant .  
5. If the warning light does not turn off, do not continue driving or let the engine run, even if the coolant is at the correct level  
6. Contact an authorized Volkswagen dealer or authorized Volkswagen Service Facility for assistance.  
381  
Brake fluid  
Introduction  
Brake fluid absorbs moisture from the air over the course of time. Too much water in the brake fluid causes damage to the  
brake system. Water lowers the boiling point of the brake fluid. If the water content in the brake fluid is too high, vapor lock ma  
form in the brake system during heavy braking and full braking. Vapor lock reduces the braking efficiency, increases the  
braking distance considerably, and can lead to a total failure of the brake system. Your own safety and the safety of others on  
the road depends on your brake system functioning correctly at all times.  
WARNING  
Brake fluid is poisonous. Contact with brake fluid – in particular, if brake fluid is swallowed – may result in serious injury or  
death.  
If you swallow brake fluid, seek urgent medical help.  
If you have health problems after working with brake fluid, seek medical help.  
Always store brake fluid out of the reach of children and only within the sealed original container.  
Never use empty food cans, bottles, or other containers to store brake fluid, because someone could drink the  
brake fluid by mistake.  
Avoid regular contact with brake fluid to prevent damage to your skin.  
Protect your skin, face, and particularly your eyes when working with brake fluid.  
Do not eat, drink, or smoke when working with brake fluid.  
Wash your skin with soap and water after working with brake fluid.  
NOTICE  
Spilled or leaking brake fluid will damage the vehicle's surfaces. The vehicle's paint, plastic parts, and tires may be  
damaged.  
Immediately wipe up any spilled or leaking brake fluid that comes into contact with vehicle components.  
Then rinse all vehicle parts with plenty of water.  
Brake fluid can pollute the environment.  
Collect any leaking fluids and dispose of them according to legal and environmental regulations.  
Brake fluid specifications  
Please read the introductory information and heed the Warnings and Notice ⇒  
hood space.  
Safety precautions for working in the  
Volkswagen has developed a special brake fluid that is optimized for the vehicle's brake system. For optimum performance of  
the brake system, Volkswagen recommends only using brake fluid that complies with the VW standard 501 14.  
Before using brake fluid, check that the brake fluid specification on the bottle matches the vehicle requirements.  
Brake fluid that complies with the VW standard 501 14 can be obtained from an authorized Volkswagen dealer or authorized  
Volkswagen Service Facility.  
If this type of brake fluid is not available and it is therefore necessary to use a different high-quality brake fluid instead, a brake  
fluid that meets the requirements of DIN ISO 4925 or the US standard FMVSS 116 DOT 4 CLASS 6 can be used.  
382  
Not all brake fluids that comply with the requirements of DIN ISO 4925 or US Standard FMVSS 116 DOT 4 CLASS 6 have the  
same chemical composition. Some of these brake fluids can contain chemicals that can destroy or damage components of the  
vehicle brake system over time.  
Brake fluid that complies with the VW standard 501 14 meets the requirements of DIN ISO 4925 or the US Standard  
FMVSS 116 DOT 4 CLASS 6.  
Checking the Brake Fluid  
Please read the introductory information and heed the Warnings and Notice ⇒  
hood space.  
Safety precautions for working in the  
Preparations  
1. Safely park the vehicle on a horizontal and firm surface ⇒ Parking.  
2. Open the hood.  
Checking the Brake Fluid Level  
Fig. 171 In the hood space: Cap on the brake fluid reservoir.  
The brake fluid reservoir can be recognized by its cap fig. 171.  
The brake fluid level cannot be checked precisely on all models because the hood or engine components may obstruct the  
view of the fluid level in the reservoir.  
If you cannot read the brake fluid level clearly, see an authorized Volkswagen dealer or authorized Volkswagen Service  
Facility for assistance. Volkswagen recommends contacting an authorized Volkswagen dealer or authorized Volkswagen  
Service Facility.  
If the brake fluid level is not between the min. and max. marking on the brake fluid reservoir, contact an authorized  
Volkswagen dealer or authorized Volkswagen Service Facility ⇒  
. Volkswagen recommends contacting an  
authorized Volkswagen dealer or authorized Volkswagen Service Facility.  
The brake fluid level decreases slightly when the vehicle is being used as the brake pads wear and the brakes automatically  
adjust themselves.  
383  
WARNING  
A low brake fluid level or unsuitable brake fluid may cause the brakes to fail or may reduce braking efficiency. Accidents  
and serious or fatal injuries could result.  
Have the brake system and brake fluid level checked regularly.  
Be sure to use the correct brake fluid.  
Only use brake fluid that expressly complies with the VW standard 501 14.  
Only use a high-quality brake fluid that complies with DIN ISO 4925 CLASS 6 or the US standard  
FMVSS 116 DOT 4 in the exceptional case that a brake fluid that conforms to VW standard 501 14 is not available.  
Changing brake fluid  
An authorized Volkswagen dealer or authorized Volkswagen Service Facility can provide information about the interval for  
changing the vehicle brake fluid. Volkswagen recommends contacting an authorized Volkswagen dealer or authorized  
Volkswagen Service Facility.  
Have the brake fluid changed regularly.  
Only have brake fluid added that meets the required specifications.  
WARNING  
Vapor lock may occur in old brake fluid due to absorbed moisture during hard braking, reducing braking efficiency and  
potentially causing total brake failure. Accidents and serious or fatal injuries could result.  
Have the brake fluid changed regularly.  
Only have new brake fluid added.  
Troubleshooting  
Please read the introductory information and heed the Warnings and Notice ⇒  
hood space.  
Safety precautions for working in the  
Brake fluid level  
The red warning light turns on. The brake fluid level is too low.  
Do not continue driving! This could result in the brake failing.  
1. Stop the vehicle immediately as soon as it is safe to do so ⇒ Parking.  
2. Check the brake fluid level.  
3. If the brake fluid level is too low, contact an authorized Volkswagen dealer or authorized Volkswagen Service Facility.  
12 V vehicle battery  
Introduction  
The 12-volt vehicle battery is a component of the electrical system and serves to supply energy to the vehicle. During  
maintenance procedures, the 12 V vehicle battery is checked and replaced if necessary.  
You may only perform procedures on the electrical system yourself if you are familiar with the necessary activities and the  
general safety precautions, and if the correct operating equipment and fluids and suitable tools are available. Work performed  
incorrectly can result in serious injuries ⇒  
.
384  
Information about warning and indicator lights can be found in the troubleshooting section at the end of the chapter  
⇒ Troubleshooting.  
Battery switch-off in an accident with triggering of the airbag  
In vehicles with a 12 V vehicle battery in their vehicle interior or luggage compartment, the electrical connection to the 12 V  
vehicle battery is pyrotechnically disconnected in an accident with airbag deployment. This prevents a short circuit. For more  
information on the installation location of the vehicle battery, refer to section → page , Checking the 12 V vehicle battery acid  
level.  
Detailed warnings for the 12 V vehicle battery  
Always wear eye protection.  
Battery acid is highly corrosive. Always wear protective gloves and eye protection.  
Fire, sparks, open flame, and smoking are forbidden. A highly explosive mixture of gases forms when charging the 12 V  
vehicle battery. Always keep children away from battery acid and the 12 V vehicle battery.  
Manual.  
Always heed the Owner's  
WARNING  
Performing work on the 12 V vehicle battery and the electrical system can cause serious injuries, fires, or electric shocks.  
This could result in serious injuries.  
Always read and follow the warning information on the 12 V vehicle battery.  
Before performing any work on the 12 V vehicle battery, switch off the ignition and all electrical equipment and  
disconnect the 12 V battery negative cable.  
Always keep children away from battery electrolyte and the 12 V vehicle battery.  
When handling 12 V vehicle batteries, always protect your hands, arms, and face from spraying battery acid.  
Always wear eye protection and safety gloves.  
Never short circuit the battery terminals.  
Have all work performed by suitably qualified professionals. Volkswagen recommends contacting an authorized  
Volkswagen dealer or authorized Volkswagen Service Facility.  
WARNING  
When work is carried out on the 12 V vehicle battery, a highly explosive, flammable gas mixture builds up. Sparks could  
form and ignite the flammable gas that is released by the 12 V vehicle battery. This can result in serious injury or death.  
Always keep fires, sparks, open flames, and lit cigarettes far away from the 12 V vehicle battery.  
Avoid creating sparks when working with wires and electrical equipment or when discharging static electricity.  
WARNING  
California Proposition 65 Warning.  
This product can expose you to chemicals including lead and lead components, which are known to the State of  
California to cause cancer and birth defects or other reproductive harm. For more information go to  
https://www.P65Warnings.ca.gov.  
NOTICE  
UV rays can damage the battery housing.  
385  
Do not expose the 12 V vehicle battery to direct sunlight for a long period of time.  
NOTICE  
The 12 V vehicle battery could freeze and be destroyed.  
Protect the 12 V vehicle battery against freezing temperatures if the vehicle is parked for long periods of time.  
System settings after a battery change  
If the 12 V vehicle battery is replaced or after a successful jump-start, system settings may be changed or deleted.  
1. Check the date and time and adjust them if necessary.  
2. Check personal convenience settings and adjust and save them as necessary.  
12 V vehicle batteries can contain toxic substances such as sulfuric acid and lead. Dispose of the 12 V vehicle battery  
according to legal and environmental regulations and only at a collection point for old batteries, e.g. a recycling center or  
specialist retailer.  
Battery acid can pollute the environment. Collect any leaking fluids and dispose of them according to legal and  
environmental regulations.  
Checking the 12 V vehicle battery acid level  
Please read the introductory information and heed the Warnings and Notice ⇒  
hood space.  
The 12 V vehicle battery does not require any maintenance.  
Safety precautions for working in the  
Check the acid level of the 12 V vehicle battery regularly if mileage is high, in countries with warm climates, or if the 12 V  
vehicle battery is old. Otherwise, the 12 V vehicle battery is maintenance-free.  
12 V vehicle battery location  
The 12 V vehicle battery is located in the hood space.  
Preparations  
1. Prepare the vehicle for work in the hood space.  
2. Wear suitable eye protection and safety gloves.  
3. Open the hood.  
Checking the Acid Level  
WARNING  
Battery acid is corrosive. Contact with battery acid, especially swallowing battery acid, can result in serious burns.  
Never open a 12 V vehicle battery.  
Never tilt the 12 V vehicle battery. Acid can leak out of the vent openings.  
Protect your skin, face, and particularly your eyes when working with the 12 V vehicle battery.  
Do not eat, drink, or smoke when working on the 12 V vehicle battery.  
Wash your skin with soap and water after working on the 12 V vehicle battery.  
If acid comes into contact with your skin or hair, remove all soiled or wet clothing and wash your skin and hair with  
386  
water. Consult a doctor.  
If acid comes into contact with your eyes, rinse the affected area carefully with water for several minutes. Then  
consult a doctor immediately.  
If you swallow battery acid, immediately drink plenty of water and swallow activated charcoal. Consult a doctor  
immediately.  
If you have inhaled acid vapors, leave the hazard area and breathe in fresh air. Consult a doctor immediately.  
WARNING  
When work is carried out on the 12 V vehicle battery, a highly explosive, flammable gas mixture builds up. Sparks could  
form and ignite the flammable gas that is released by the 12 V vehicle battery. This can result in serious injury or death.  
Always keep fires, sparks, open flames, and lit cigarettes far away from the 12 V vehicle battery.  
Avoid creating sparks when working with wires and electrical equipment or when discharging static electricity.  
Depending on the vehicle equipment, an additional bracket must be removed to see the viewing window. An additional tool  
that is not available in the vehicle tool kit is required to do this. Always have the acid level of the 12 V vehicle battery checked  
by an authorized Volkswagen dealer or authorized Volkswagen Service Facility. Volkswagen recommends contacting an  
authorized Volkswagen dealer or authorized Volkswagen Service Facility.  
Fig. 172 On the top of the 12 V vehicle battery: Window (general example).  
Make sure there is enough lighting to clearly see the color indicator in the circular window on the top of the 12 V vehicle batter  
fig. 172.  
Light yellow or colorless  
The 12 V vehicle battery acid level is too low. Have the 12 V vehicle battery replaced by an authorized Volkswagen  
dealer or authorized Volkswagen Service Facility. Volkswagen recommends contacting an authorized Volkswagen dealer  
387  
or authorized Volkswagen Service Facility.  
Black  
The 12 V vehicle battery acid level is OK.  
The acid level of 12 V vehicle batteries labeled AGM cannot be checked for technical reasons. Suitably qualified professiona  
can inspect the battery. Volkswagen recommends contacting an authorized Volkswagen dealer or authorized Volkswagen  
Service Facility.  
Charging, replacing, disconnecting, or connecting the 12 V vehicle battery  
Please read the introductory information and heed the Warnings and Notice ⇒  
hood space.  
Safety precautions for working in the  
If you suspect that the 12 V vehicle battery is damaged or malfunctioning, see suitably qualified professionals to have the 12 V  
vehicle battery checked. Volkswagen recommends contacting an authorized Volkswagen dealer or authorized Volkswagen  
Service Facility.  
Charging the 12 V vehicle battery  
The 12 V vehicle battery should be charged by suitably qualified professionals because the 12 V vehicle battery that is  
installed at the factory requires a charging process where the voltage is limited ⇒  
. Volkswagen recommends contacting  
an authorized Volkswagen dealer or authorized Volkswagen Service Facility.  
Replacing the 12 V vehicle battery  
The 12 V vehicle battery is designed to fit the location where it is installed and is equipped with safety features. If a 12 V  
vehicle battery needs to be replaced, have the replacement part fitted by qualified professionals. Check with qualified  
professionals to find out the component information regarding size and the required maintenance, performance, and safety  
features. They must possess the necessary technical documentation and equipment. Volkswagen recommends contacting an  
authorized Volkswagen dealer or authorized Volkswagen Service Facility. The vent opening on the 12 V vehicle battery must  
always be located on the negative terminal side. The vent opening on the positive terminal side must always be sealed ⇒  
Only use a maintenance-free 12 V vehicle battery that conforms to the TL 825 06 and VW 7 50 73 standards. These  
standards must be from October 2014 or later.  
Always have the 12 V vehicle battery replaced by qualified professionals because the vehicle electronics must be adapted as  
part of the replacement. Only qualified professionals have the necessary equipment to perform the adaptation and have  
access to the correct replacement batteries.  
Disconnecting the 12 V vehicle battery  
If the 12 V vehicle battery must be disconnected from the vehicle electrical system, note the following:  
1. Switch off all electrical consumers.  
2. Unlock the vehicle before disconnecting the battery. Otherwise, the anti-theft alarm system will be triggered.  
3. Disconnect the negative cable first, and then the positive cable ⇒  
.
Connecting the 12 V vehicle battery  
If the 12 V vehicle battery must be connected to the vehicle electrical system, note the following:  
1. Switch off all electrical consumers.  
2. Connect the positive cable first, and then the negative cable ⇒  
.
Various indicator lights may turn on after connecting the 12 V vehicle battery and switching the ignition on. They will turn off  
after driving a short distance at a speed of approx. 15 to 20 km/h (approx. 10 to 12 mph). If the indicator lights light up and  
remain on, contact an authorized Volkswagen dealer or authorized Volkswagen Service Facility and have the vehicle  
checked. Volkswagen recommends contacting an authorized Volkswagen dealer or authorized Volkswagen Service Facility.  
If the 12 V vehicle battery was disconnected for a long period of time, the next scheduled maintenance may not display  
388  
correctly or it may not be calculated correctly ⇒ Service interval display. Follow the maximum permissible service intervals  
⇒ Maintenance.  
Vehicles with a starter button: If the ignition cannot be switched on after connecting the 12 V vehicle battery, carry out the  
following activities:  
1. Lock and unlock the vehicle from the outside.  
2. Try to switch the ignition on again.  
3. If the ignition will not switch on, see an authorized Volkswagen dealer or authorized Volkswagen Service Facility for  
assistance.  
Automatic equipment deactivation  
If the ignition is switched on for a very long time when the engine is off or the parking light is switched on when parking for a  
very long time, the intelligent power management cannot always prevent the 12 V vehicle battery from being drained.  
If the 12 V vehicle battery is under a heavy load, the intelligent power management will automatically begin certain measures  
to prevent the 12 V vehicle battery from draining.  
The idle speed will be increased so that the alternator delivers more power.  
If necessary, equipment that uses a lot of power will have its performance limited or will be switched off.  
The power supply to the 12 V socket will be interrupted temporarily when the engine is started.  
12 V Vehicle Battery Draining  
If the battery is drained, it may not be possible to start the engine. The 12 V vehicle battery will be drained in the following  
situations:  
If the vehicle is parked for long periods of time without running the engine, especially if the ignition is on.  
If electrical equipment is used when the ignition is switched off.  
WARNING  
Use of a 12 V vehicle battery that does not have identical specifications and dimensions to the 12 V vehicle battery that  
was installed at the factory may cause short circuits or fire. This could result in serious or fatal injuries.  
Always use a maintenance-free and leak-proof 12 V vehicle battery that has the same characteristics,  
specifications, and dimensions as the 12 V vehicle battery that was installed at the factory.  
WARNING  
Fitting 12 V vehicle batteries incorrectly may cause short circuits or fire. This could result in serious or fatal injuries.  
Always attach the 12 V vehicle battery to the attachment points provided in the vehicle.  
Replace all covers that are required for the vehicle back on the battery.  
WARNING  
A highly explosive mixture of oxyhydrogen can form when charging the 12 V vehicle battery. Sparks or naked flames  
could ignite the gas mixture. This could cause serious burns.  
Only charge 12 V vehicle batteries in well-ventilated areas.  
Keep sparks and naked flames away from the 12 V vehicle battery.  
389  
WARNING  
If the degassing tube is not attached to the 12 V vehicle battery correctly, the highly explosive gas mixture that builds up  
when the vehicle is running may enter the vehicle interior. The flammable gas could ignite and cause serious injuries or  
death.  
For vehicles with the 12 V vehicle battery in the vehicle interior or luggage compartment, ensure that the degassing  
hose is connected to the 12 V vehicle battery correctly. The degassing hose must always be connected to the  
negative terminal side of the 12-volt vehicle battery.  
Always ensure that the opening on the positive terminal side of the 12 V vehicle battery is capped.  
CAUTION  
A drained 12 V vehicle battery can freeze at temperatures around 0 °C (+32 °F). Acid can escape from a frozen and  
defrosted 12 V vehicle battery. This can cause injuries and long-term damage to the vehicle.  
Never charge a frozen or thawed 12 V vehicle battery.  
Always replace the 12 V vehicle battery if it freezes.  
CAUTION  
Cables that are connected incorrectly can cause a short circuit. This could damage the on-board electronics and result in  
serious injuries.  
Connect the positive cable first and then the negative cable.  
NOTICE  
If the 12 V vehicle battery is connected or disconnected when the ignition is switched on or the engine is running, this  
could damage the electrical system or electronic components, resulting in electrical malfunctions.  
Never connect or disconnect the 12 V vehicle battery when the ignition is on or the engine is running.  
NOTICE  
If accessories that provide power for charging the 12 V vehicle battery are connected to the 12 V socket, this could  
damage the electrical system or electronic components, resulting in electrical malfunctions.  
Never connect accessories that provide power, such as solar panels or battery chargers, to the 12 V socket in  
order to charge the 12 V vehicle battery.  
Troubleshooting  
Please read the introductory information and heed the Warnings and Notice ⇒  
hood space.  
Safety precautions for working in the  
12-volt power supply  
The red warning light turns on.  
390  
Do not continue driving! Possible failure of the electrical system.  
A message is shown in the instrument cluster display.  
1. Stop the vehicle immediately and park it safely.  
2. Turn off electrical equipment that is not needed.  
3. Stop the engine and switch the ignition off.  
4. Contact an authorized Volkswagen dealer or authorized Volkswagen Service Facility for assistance.  
If the red warning light comes on, the start-stop system is switched off. The start-stop system will only be automatically  
switched on again after the engine is restarted.  
12-volt power supply  
The yellow indicator light turns on.  
A message regarding the battery charge level of the 12 V vehicle battery is shown in the instrument cluster display.  
1. Let the engine run so that the 12 V vehicle battery can be recharged.  
2. If the message about the battery charge level of the 12 V vehicle battery does not turn off after a few minutes despite the  
measures having been taken, then contact an authorized Volkswagen dealer or authorized Volkswagen Service Facility.  
A message regarding the 12 V power supply is shown in the instrument cluster display.  
1. Contact an authorized Volkswagen dealer or authorized Volkswagen Service Facility for assistance.  
If the yellow indicator light lights up, the start-stop system will not be able to start the engine. If the yellow indicator light has  
turned off, the 12 V vehicle battery has a sufficient battery charge level to automatically restart the engine.  
391  

Related Topics

In the hood space
Operating fluids and operating equipment
Washer fluid
Engine oil
Coolant
Brake fluid
12 V vehicle battery

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