See also:

Battery replacement
Use approved vehicle batteries Only use vehicle batteries that have been approved for your vehicle by the manufacturer; otherwise, the vehicle could be damaged and systems or functions may no ...

Vehicle battery
Maintenance The battery is maintenance-free, i.e., the electrolyte will last for the life of the battery. Your service center will be glad to advise you on questions regarding the battery. Batt ...

Switching on
The cooler can be operated at two levels. 1. Switch on the ignition. 2. Press the button once for each cooling level. The highest cooling power is active when two LEDs are lit. If the coole ...