1. Safety Precautions:
Before starting any work, ensure that the vehicle is in Park, the engine is turned off, and the parking brake is engaged. Additionally, disconnect the negative terminal of the car battery for electrical safety.
2. Locate the Emergency Brake Light Switch:
The emergency brake light switch is usually located near the brake pedal assembly. In the Mercedes E320, it's typically positioned at the top of the brake pedal arm.
3. Remove the Center Console Trim:
- Pry open the center console trim by gently inserting a flat-head screwdriver or a trim removal tool into the seams.
- Be cautious not to damage the trim or the surrounding areas.
4. Access the Switch:
- Once the center console trim is removed, you'll be able to see the emergency brake light switch.
- It's usually held in place by a plastic retainer or a bolt.
5. Disconnect the Electrical Connector:
- Locate the electrical connector attached to the emergency brake light switch.
- Press the release tab or squeeze the connector to disconnect it.
6. Remove the Old Switch:
- If the switch is held by a retainer, carefully pry it open and lift the old switch out.
- If it's secured by a bolt, use an appropriate wrench to loosen and remove the bolt.
- Gently pull the switch out once the retainer/bolt is removed.
7. Install the New Switch:
- Insert the new emergency brake light switch into its designated location.
- Secure it by snapping the retainer back into place or tightening the bolt.
8. Reconnect the Electrical Connector:
- Plug the electrical connector back onto the new switch until it clicks securely.
9. Reinstall the Center Console Trim:
- Carefully align and snap the center console trim back into place.
10. Test the Switch:
- Engage the emergency brake and check if the brake lights illuminate.
- Press the brake pedal to ensure the brake lights function normally.
11. Reconnect the Battery:
- Reconnect the negative terminal of the car battery.
12. Confirm Functionality:
- Take the car for a short test drive to ensure that the emergency brake light switch is functioning properly.
Remember, Mercedes vehicles are complex and if you're not comfortable performing this task, it's best to seek assistance from a qualified mechanic.
