Mercedes-Benz C-Class (W205) 2015 - 2021 Owners Manual: Function of ABS (Anti-lock Braking System)

ABS regulates the brake pressure in critical driving situations:

• During braking, e.g. at full brake application or insufficient tire traction, the wheels are prevented from locking.
• Vehicle steerability while braking is ensured.

If ABS intervenes when braking, you will feel a pulsing in the brake pedal. The pulsating brake pedal can be an indication of hazardous road conditions and can serve as a reminder to take extra care while driving.

System limitations

• ABS is active from speeds of approx. 5 mph (8 km/h).
• ABS may be impaired or may not function if a malfunction has occurred and the yellow! ABS warning lamp lights up continuously in the instrument cluster after the engine is started.

Function of BAS (Brake Assist System)

BAS supports your emergency braking situation with additional brake force.

If you depress the brake pedal quickly, BAS is activated:

• BAS automatically boosts the brake pressure.
• BAS can shorten the braking distance.
• ABS prevents the wheels from locking.

The brakes will function as usual once you release the brake pedal. BAS is deactivated.