Safety & assistance
Crash sensor
Reports collision-related motion or pressure to restraint control.
At prescribed locations in the body or restraint system.
Its signal is interpreted with other crash information according to calibrated deployment logic.
An emergency messenger watching the body’s movement.
A restraint warning can involve mounting, wiring, supply or sensor faults.
Inspect and service using model-specific guidance, especially after a collision; warning lights require diagnosis.
Calibration, matched modules and post-collision work may dominate cost. An illuminated warning does not identify a replaceable part.
BMW crash-sensor mounting and orientation are part of the safety-system design.
BMW safety systems according to market, model year and option package.
Same system