Description:

Error code BIF 002863.02 is reported when the control unit receives several implausible input signals simultaneously from the wiper switch (S128) designated for windshield and rear window wipers. This condition typically suggests a malfunction in the wiper switch itself or a fault within the associated circuit, affecting the proper operation of the windshield wipers.

Reaction:

Due to this signal fault, the windshield wiper operation may become erratic or non-responsive, potentially impairing visibility during adverse weather conditions.

Recommendations:

• Inspect and Test Wiper Switch (S128): Examine the wiper switch for physical damage, wear, or electrical faults. Test the switch’s functionality to confirm if the implausible signals are due to internal switch issues.
• Check Wiring and Connections: Look for any loose, corroded, or damaged wires leading to and from the wiper switch. Repair or replace any faulty wiring to ensure stable and accurate signal transmission.
• Evaluate Control Unit Inputs: Use diagnostic tools to monitor the inputs received by the control unit from the wiper switch. This can help determine if the issue is isolated to the switch or if there are broader electrical issues at play.
• Replace Defective Components: If the wiper switch is found to be defective, replace it to restore proper functionality to the windshield and rear window wipers.
• System Reset and Functionality Check: After repairs or replacements are made, reset the system to clear the fault code and test the wipers to ensure they operate correctly under all settings.

Note:

Maintaining functional and reliable wiper systems is crucial for safe vehicle operation in various weather conditions. Regular inspections and timely repairs of the wiper system components can prevent visibility issues and ensure driver safety.