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Turn signals on a 1996 Mercedes c220 are not working. The fuse and bulbs good. What should I check next?

Here are a few additional things you can check to troubleshoot the turn signal issue on your 1996 Mercedes c220:

1. Turn Signal Relay: The turn signal relay is responsible for controlling the turn signals and may be faulty. Check for any damage or loose connections on the turn signal relay. Replace it if necessary.

2. Turn Signal Switch: The turn signal switch is used to activate the turn signals. Check the turn signal switch for any damage or loose connections. If necessary, replace it.

3. Wiring Harness: Inspect the wiring harness for any damage or loose connections. Check for broken wires or frayed insulation, especially in areas near the turn signal bulbs or steering column. Repair any damaged wires or replace the wiring harness if necessary.

4. Hazard Switch: Check the hazard switch for any damage or loose connections. Ensure the hazard switch is working correctly.

5. Turn Signal Bulb Sockets: Inspect the turn signal bulb sockets for any damage, corrosion, or loose connections. Make sure the bulbs are securely seated in their sockets. Clean and tighten the bulb sockets as necessary.

6. Ground Connection: Check the ground connection for the turn signals. Make sure it is clean, tight, and free of corrosion. Clean and tighten the ground connection if necessary.