Windshield wiper - Alternating Park Position (APP) function, deactivating
Special tools, testers and auxiliary items required
- Vehicle Diagnosis, Testing and Information System VAS 5051/5052
- Diagnostic cable VAS 5051/6A (or length appropriate alternative)
Windshield wiper system is equipped with Alternating Park Position (APP) function).
Every other time the wipers are witched off, the APP function causes the wiper arms to move upward slightly from the lowest position, causing the wiper blade rubbers to "flip" or tilt in a manner that "alternates" from the previous switch-off event.
APP function serves to increase wiper blade service life by alternating the wiper rubber contact angle at the windshield after use.
In order to install the crank on the wiper motor in the proper position, it is necessary to shut off the motor in the lowest park position. This is done by deactivating the APP function in the coding of Wiper Motor Control Module J400.
- Activating APP function is not possible.
- APP function is automatically activated after 100 wiping cycles. This applies to wiper motors in which the APP function was deactivated as well as for new wiper motors.
- Connect Vehicle Diagnosis, Testing and Information System VAS 5051/5052 → VAS 5051 / 5052 under Vehicle Diagnostic, Testing and Information System VAS 5051 / 5052, onnecting
- Select operating mode "Guided Fault Finding"
- Enter information as prompted and press ">" to confirm.
After the DTC memory of all control modules has been checked:
- Use "Go to" button to select "Function / Component Selection"
- Select "Body (Repair Group 01; 27; 50-97)"
- Select "Electrical system int/ext (Repair Group 01; 27; 90-97)"
- Select "01 - Self-diagnosis"
- Select "Vehicle Electrical System Control Module"
- Select "Vehicle Electrical System Control Module functions"
- Select "Coding control module for wiper electronics/deactivating APP"
- Press ">" to confirm.
- Follow tester prompts