Tools and Materials Needed:
- Replacement Ignition Switch
- Small flathead screwdriver
- Torx screwdriver (size may vary)
- Phillips screwdriver
- Flashlight
- New key
Instructions:
Step 1: Disconnect the Battery:
Disconnect the negative terminal of your car battery. This is a safety precaution to prevent electrical issues.
Step 2: Remove Steering Wheel Covers:
- Use a small flat-head screwdriver to carefully pry open the airbag cover on the steering wheel.
- Unscrew the Torx screws underneath to remove the upper and lower steering wheel covers.
Step 3: Remove Ignition Lock:
- Insert your car key into the ignition switch and turn it to the "On" position.
- Use the flat-head screwdriver to push down on the spring clip inside the ignition lock. While pressing down on the clip, turn the key to the "Acc" position.
- Pull out the ignition lock assembly.
Step 4: Disconnect Electrical Connectors:
- Locate the electrical connector attached to the ignition lock.
- Press the release tab on the connector and disconnect it.
Step 5: Remove Old Ignition Switch:
- Use a Phillips screwdriver to remove the screws holding the ignition switch in place.
- Pull out the old ignition switch.
Step 6: Install New Ignition Switch:
- Insert the new ignition switch into the housing and align it properly.
- Secure the new switch with the screws removed earlier.
Step 7: Reconnect Electrical Connectors:
- Reattach the electrical connector that you disconnected earlier.
Step 8: Replace Steering Wheel Covers:
- Reattach the lower and upper steering wheel covers.
- Secure them with the Torx screws.
Step 9: Replace Airbag Cover:
- Snap the airbag cover back into place.
Step 10: Reconnect the Battery:
- Reconnect the negative terminal of the car battery.
Step 11: Test the New Ignition Switch:
- Insert the new key into the ignition switch and turn it to the "On" position.
- Verify that the ignition works correctly, and all warning lights are off.
Remember, this guide provides general steps for replacing an ignition switch in a Mercedes SL320. For specific instructions and safety guidelines related to your vehicle, consult your vehicle's service manual. If you're not comfortable performing this task yourself, it's best to consult with a qualified mechanic or auto electrician.
