Get Checking and filling -> Coolant Guide for Volkswagen Jetta 4 Door Seventh Generation (2019-2025)

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

377

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.

378

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

379

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

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

Related Topics

Checking and filling

Popular Owner Manuals

Latest Owner Manuals