Removing
1. Disconnect the negative cable (-) battery with the ignition off. The cabin air filter box must first be removed.
Before disconnecting the cable, find out the security code of the radio, if any, refer to Section Replacing the battery.
2. Remove facing of pillars B or C, refer to the appropriate section.
![](https://www.mercedesman.ru/img/c-class/1935.jpg)
3. Disconnect the connector (1), press the bar in the direction of the arrow and remove the switch from the opening.
Installation
1. Installation is carried out in the reverse order of removal.
2. Connect ground cable (-) battery with the ignition off. Install the cabin air filter box. If necessary, enter the radio code and set the time on the clock.