Shop OEM BMW Part # 65776974364. Air Bag Impact Sensor (Left). 2004-05, B-pillar. 525i, 530i; Left. 545i; Left. 645Ci; Coupe; Left. Air Bag Crash Sensor - Repair or

Sensor.
A Sensor to determine the location on the vehicle of impact and the severity of the impact to determine if and which air bags should be deployed. B - pillar. Air Bag Impact. Position. Side.

Air Bag Impact Sensor

Fits 525i, 530i, 545i, 645Ci

2004-05, B-pillar. 525i, 530i; Left. 545i; Left. 645Ci; Coupe; Left.
Air Bag Crash Sensor - Repair or Replace
An airbag or SRS light can sometimes indicate a problem with the impact sensor on your , particularly if it's been involved in a collision—at any speed. Have a technician inspect your vehicle's crash sensor.