5: Airbag Sensors on Front Left Door and Front Right Door

R50, R52, R53
Airbag Sensors On Front Left Door And Front Right Door

Installation location
The front left door airbag sensor and the front right door airbag sensor are both installed on the inner door panel.

Driver's Side Door:

Key Explanation
1 Airbag sensor, front left door

Construction
The front left door airbag sensor and the front right door airbag sensor consist of the following components:
- Pressure sensor (for detecting a side impact)
- Electronic module (for signal processing and data transmission)

The front right door airbag sensor and the front left door airbag sensor are identical.

How it works
If the door outer skin is pushed inwards in the event of a side impact, the volume inside the door is reduced and the pressure increases. This increase in pressure is measured by the pressure sensor. The pressure readings are digitised in the electronic module. The electronic module sends a message to the MRS control unit on a cyclical basis.
The message is analysed in the MRS control unit.