See also:

Active Noise Control (ANC)
By identifying undesirable sounds in the cabin and then playing back through the speakers sound waves of opposite phase, the original noises are cancelled out, making the M's interior a quieter, m ...

Brake precautions
Vacuum assisted brakes The brake booster aids braking by using engine vacuum. If the engine stops, you can stop the vehicle by depressing the brake pedal. However, greater foot pressure on the brake ...

Checking engine coolant level
Checking engine coolant level Check the coolant level in the reservoir when the engine is cold. If the coolant level is below MIN 2 , open the reservoir tank cap and add coolant up to the MAX 1 l ...