The battery is maintenance-free.
The added amount of acid is sufficient for the service life of the battery.
Further information about the battery can be obtained from your service center.
Battery replacement
Use approved vehicle batteries only
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 not be fully available.
After a battery replacement, have the battery registered on the vehicle by the service center to ensure that all comfort features are fully available and that any Check Control messages of these comfort features are no longer displayed.
BMW X3 Owners Manual > Lights: Fog lights
Front fog lights
The parking lights or low beams must be
switched on.
Press button. The green
indicator
lamp lights up.
If the automatic headlight control, is activated, the low beams will come
on automatically when you switch on the front
fog lights.
When the high beams or headlight ...