Wiper Switch: Service and Repair

1. Disconnect battery ground cable and remove steering wheel.
2. Remove left lower instrument panel trim and lower steering column cover. On 633/635CSi and M6, disconnect hoses from in-car temperature sensor and the sensor electrical connector.
3. Release harness straps and disconnect switch electrical connector from harness.
4. Remove switch mounting screws and the switch.
5. Reverse procedure to install.