Description
This Mercedes Brake Assist BAS module is a genuine OEM electronic control component for the Mercedes W129, W140 and W210 models. Primary OEM number 0255454832. It is designed to recognize an emergency braking situation from the speed at which the brake pedal is pressed and to command maximum brake pressure, helping the driver reach full braking force even when the pedal is not pushed hard enough.
Its job is to evaluate the signals from the brake pedal and the brake system and to control the brake assist function together with the ABS and traction systems. A properly working Brake Assist BAS module supports shorter stopping distances, stable vehicle behavior in panic braking and correct operation of the electronic braking system, which is a safety relevant function on these Mercedes sedans, coupes and roadsters.
Common signs of a faulty unit include a lit BAS, ABS or brake warning light in the instrument cluster, missing brake assist in emergency stops, a hard or inconsistent pedal feel, stored fault codes in the braking system or intermittent warnings after a cold start. When the module fails, the brake assist function may switch off and the car may need more pedal force and a longer distance to stop.
This is a used original part, removed from a vehicle and tested before sale. Match the exact OEM number 0255454832 before ordering. Professional installation is recommended, and a diagnostic scan of the brake system, a fault memory check and coding where applicable should follow installation.
Returns accepted only for genuine faults — faulty on arrival, not as described, or wrong part supplied — requested within 14 days, with all 3 anti-tamper stickers intact. No returns for change of mind, incorrect installation, coding/programming, or buyer compatibility errors; checking compatibility (OEM number, firmware, vehicle) is the buyer’s responsibility. Full policy: https://giantparts.eu/refund-and-returns/
