The 12-volt vehicle battery is a component of the electrical system and serves to supply power in the vehicle. In the scope of
maintenance work, the 12-volt vehicle battery is checked and where required, replaced.
You should only carry out work on the electrical system if you know exactly how to perform the required tasks, are aware of the general
safety procedures and have access to the correct equipment, service fluids and suitable tools. Failing to carry out work correctly can
cause serious injuries →
.
Information on warning and indicator lamps that light up can be found in the troubleshooting sections at the end of the chapter (→ 12-
volt vehicle battery).
Battery switch-off in an accident in which the airbag is triggered
In vehicles with a 12-volt vehicle battery in the vehicle interior or luggage compartment, the electrical connection to the 12-volt
vehicle battery is automatically disconnected pyrotechnically in the event of an accident in which the airbags are triggered. This
prevents a short circuit. You can find further information on the location of the vehicle battery in the section (→ 12-volt vehicle
battery).
Explanation of the warnings on the 12-volt vehicle battery
Always wear eye protection!
Electrolyte is very corrosive and caustic. Always wear protective gloves and eye protection!
No fire, sparks, naked lights or smoking!
A highly explosive mixture of gases is given off when the 12-volt vehicle battery is charging!
Always keep children away from electrolyte and the 12-volt vehicle battery!
Always observe the owner’s manual!
WARNING
Any work on the 12-volt vehicle battery and the electrical system can cause serious chemical burns, fire or electric shocks. This can
cause severe injuries.
● Always read and observe the warnings on the 12-volt vehicle battery.
● Switch off the ignition and all electrical consumers before carrying out any work on the 12-volt vehicle battery and also disconnect
the negative cable from the 12-volt vehicle battery.
● Children should always be kept away from electrolyte and the 12-volt vehicle battery.
● When working with the 12-volt vehicle battery, ensure that your hands, arms and face in particular are protected from acid
spillage.
● Always wear eye protection and protective gloves.
● Never short circuit battery terminals.
● All work should be carried out by a suitably qualified workshop. Volkswagen recommends using an authorised Volkswagen repairer.
WARNING
A highly explosive gas mixture is produced when working on the 12-volt vehicle battery. The explosive gas emitted from the 12-volt
vehicle battery could be ignited by sparks. This can cause severe or fatal injuries.
● Always keep fire, sparks, naked flames and lit cigarettes away from the 12-volt vehicle battery.
● When handling cables and electrical equipment, avoid generating sparks and electrostatic discharge.
NOTICE
Ultraviolet radiation can damage the battery housing.
● Do not expose the 12-volt vehicle battery to direct sunlight for an extended period.
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