Vehicle battery -> Charging, replacing, disconnecting, and connecting the vehicle battery for Your Volkswagen Passat SUV Seventh Generation (2010-2014)

WARNING  
Working on the batteries can cause serious acid burns, explo-  
sion, or electrical shock.  
Always wear eye protection and protective gloves.  
Sulfuric battery acid is very corrosive. It can burn unprotect-  
ed skin and cause blindness. Always wear protective gloves  
and eye protection.  
Never tilt the vehicle battery. Acid could spill out of the bat-  
tery vents and burn you.  
Never open a vehicle battery.  
If you get battery acid in your eyes or on your skin, immedi-  
ately rinse with cold water for several minutes and then get  
immediate medical attention.  
If you swallow any battery acid, get medical attention imme-  
diately.  
Charging, replacing, disconnecting, and connecting the vehicle  
battery  
¤ Please first read and note the introductory information and  
heed the WARNINGS  
Charging the vehicle battery  
Vehicle batteries should be charged by an authorized Volkswagen  
dealer or an authorized Volkswagen Service Facility because the fac-  
tory-installed battery requires a charger with overload protection  
.
Replacing the vehicle battery  
The battery in your vehicle is specially developed for its location, with  
special dimensions and safety features. Before buying a new battery,  
ask an authorized Volkswagen dealer or authorized Volkswagen Ser-  
vice Facility what batteries are suitable with regard to electro-  
magnetic compatibility, dimensions, required maintenance, perfor-  
mance, and safety specifications. Have the battery replaced by an  
authorized Volkswagen dealer or an authorized Volkswagen Service  
Facility.  
Only use maintenance-free vehicle batteries meeting standards  
TL 825 06 and VW 7 50 73. These standards must date from Au-  
gust 2008 or later.  
Disconnecting the vehicle battery  
If the battery must be disconnected from the vehicle's electrical sys-  
tem, note the following:  
Switch off all electrical systems and devices and the ignition.  
Unlock the vehicle before disconnecting the battery; otherwise the  
alarm system will go off.  
First disconnect the negative cable (-) and then the positive cable  
(+) ꢀ  
.
Connecting the vehicle battery  
Prior to reconnecting the battery, switch off all electrical systems  
and devices and the ignition.  
Connect the positive cable (+) first and then the negative cable (-)  
ꢀ  
.
After the battery is connected and the ignition is switched on, different  
indicator lights may come on. They should go out after you drive a  
short distance at 10–12 mph (15–20 km/h). If the indicator lights do  
not go out, contact an authorized Volkswagen dealer or an authorized  
Volkswagen Service Facility and have the vehicle checked.  
If the battery was disconnected for a long time, the next scheduled  
service may not be correctly calculated and displayed page 12,  
Instrument cluster. The maximum permissible service and mainte-  
nance intervals are shown in the Booklet Warranty and Mainte-  
nance.  
Vehicles with Keyless Access  
If the ignition will not start after reconnecting the vehicle battery, lock  
the vehicle from the outside and unlock it again Unlocking or lock-  
ing the vehicle with Keyless Access, Unlocking or locking the vehi-  
cle with Keyless Access. Then try to start the ignition again. If the  
ignition cannot be switched on, contact an authorized Volkswagen  
dealer, an authorized Volkswagen Service Facility, or another quali-  
fied workshop for assistance.  
Automatic electrical load deactivation  
If the vehicle battery drain is high, the intelligent onboard electrical  
system management automatically takes steps to help prevent bat-  
tery drain.  
The idle speed is increased so that the alternator provides more  
power.  
The power to devices that consume a lot of electricity is cut back or  
switched off completely.  
When the engine is started, the power supply to the 12 Volt sockets  
is temporarily interrupted.  
The onboard electrical system management cannot always keep the  
battery from being drained. For example, the battery will drain if the  
engine is not running, but the ignition is switched on or the parking  
lights are left on for a long time when parked.  
Battery disconnection in an accident with airbag deployment  
In vehicles with a battery in the luggage compartment, the electrical  
connection to the battery is disconnected automatically in a collision  
with airbag deployment. This helps to prevent a short-circuit.  
What drains the vehicle battery?  
Long periods when the engine is not running, especially when the  
ignition is on.  
Using electrical systems or devices when the engine is switched  
off.  
Leaving the vehicle unlocked for several days when not in use.  
The selector lever is left for a long period of time in any position  
other than P when the ignition is switched off Automatic transmis-  
sion: Selector lever.  
WARNING  
Failure to use the proper battery with proper mounting and  
connections may cause short circuits, fires, and serious per-  
sonal injuries.  
Always use only maintenance-free or cycle-free, leak-proof  
batteries with the same specifications and dimensions as the  
original equipment battery. Specifications are listed on the bat-  
tery housing.  
WARNING  
When the vehicle battery is charged, it produces highly explo-  
sive hydrogen gas.  
Charge vehicle batteries only in well-ventilated areas.  
Never charge a frozen or thawed battery. A dead battery can  
freeze at temperatures around +32 °F (0 °C).  
You must replace the vehicle battery if it was frozen.  
Incorrectly connected cables can cause a short-circuit. First  
connect the positive cable (+) and then the negative cable (-).  
NOTICE  
Never disconnect the vehicle battery or connect 2 vehicle bat-  
teries to each other when the ignition is switched on or the en-  
gine is running. Doing this may damage the electrical system or  
electronic components.  
Never use a vehicle battery that does not meet the specifica-  
tions for the vehicle battery for your vehicle. Using the wrong  
battery can damage the electrical system or electronic compo-  
nents and cause electrical malfunctions.  
Never connect power generating equipment, such as a solar  
panel or battery charger, to the 12 Volt socket in order to charge  
the vehicle battery. This can damage the vehicle's electrical sys-  
tem.  
Dispose of the vehicle battery according to regulations. Vehicle  
batteries contain poisonous substances such as sulfuric acid and  
lead.  
Battery acid can pollute the environment. Catch leaking operating  
fluids and dispose of them properly.