The concept
The parking brake is primarily intended to prevent the vehicle from rolling while parked; it brakes the rear wheels.

See also:
Important parts of the engine compartment
1. Expansion tank for coolant,
2. Washer fluid filler neck for headlamp cleaning system and window
washer system,
3. Jump-starting connection,
4. Fluid filler neck for e ...
Jump starting
Notes
If the battery is discharged, an engine can be
started using the battery of another vehicle and
two jumper cables. Only use jumper cables with
fully insulated clamp handles.
To prevent p ...
High-performance lightweight brake system
The dynamic performance of the sports sedan calls for a larger brake system,
and the new BMW 3-Series thus uses lightweight sliding-calliper brakes with
large vented discs. The aluminium front cal ...
