Mercedes Rain Sensor Reset
Supported coding features by StarCOM diagnostic tool https://www.obdtester.com/starcom
What it does
- Resets the rain/light sensor to factory default settings
- Clears learned sensitivity, thresholds, and adaptive values
- Prepares the sensor for fresh calibration or learning
When it is required
- After windshield or rain sensor replacement
- After cleaning or repair of the sensor optics
- When sensor behaves incorrectly or intermittently
- Before performing rain sensor learning procedure
Conditions that must be met
- Windshield clean and unobstructed
- Ignition ON, engine OFF (or as instructed)
- Stable battery voltage
- No active wiper or lighting fault codes
What happens during reset
- Stored sensor sensitivity and thresholds are cleared
- Sensor returns to default factory parameters
- Control unit ready for relearning
If reset is not performed
- Sensor may operate incorrectly
- Wiper or automatic headlight response may be inconsistent
- Learning procedure may fail
- Fault codes or warnings may persist
After reset
- Perform rain sensor learning procedure
- Verify correct wiper and headlight automatic operation
- Confirm smooth and reliable response
- Clear any related fault codes