Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Power window obstruction sensor, function - GF72.29-P-4004PP
MODEL 203
Obstruction sensor for window raising Function
The obstruction sensor operates during both manual and automatic raising
The obstruction sensor is active under the following conditions:
- Obstruction force of FEmax = 60 N
- Automatic raising and FEmax = 100 N
- Manual raising with a force/path rate of 1.5 N/mm to 20 N/mm when the window is opened 3 to 230 mm.
The time span from detection of the obstruction until reversal of the drive motor is t < 20 ms.
If the signal for automatic raising or the signal for manual raising after automatic activation still exists at the time of the obstruction, then the drive motor is merely stopped. If the operating switch is then detected in the neutral position, the window is opened by 10 mm.
If the signal for "switch in neutral position" is detected at the time of the obstruction, the window is opened by 200 mm.
These functions are managed by the associated door control modules.
Model 203.7 is not equipped with rear door control modules or power window motors.
| Rear door power window switch, location/purpose/design/function | Model 203.0/203.2 | GF72.29-P-4104PP | |
| Driver power window switch group, location/purpose/design/function | GF72.29-P-4112PP |
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.