Mercedes SL Bluetooth Connectivity Problem

My 2008 Mercedes SL, gasoline engine, with 248734 km, is showing function restrictions. I can't connect my smartphone via Bluetooth. Diagnostics show an error, but no code. I've checked Bluetooth settings on both devices, the car's discoverability, and re-pairing. Suspension is fine, and I see nothing drivetrain, steering, ignition system or fuel system related. Any ideas before I chase ghosts? I want to be thorough before the workshop.

4 comment(s)

Sounds like a pairing issue. Have you tried completely resetting the car's Bluetooth module? Sometimes a hard reset clears old data and allows a fresh connection. Worth trying before digging deeper.

By 'reset', do you mean disconnecting the battery? I'm hesitant without knowing the impact. Will that affect the engine management, fuel system or other modules? Is there a less drastic way to just reset the Bluetooth?

No, I wouldn't disconnect the battery unless necessary. Check your owner's manual or the Mercedes website for instructions on how to reset the infotainment system or Bluetooth module. If you can't find anything, it's best to take it to a workshop for a diagnostic. They can pinpoint the cause and clear corrupted data.

I checked the manual again, and there's nothing about a specific Bluetooth reset. Looks like a shop visit is inevitable. The pairing process was corrupted. They cleared the old data and re-paired my phone. The bill was 45€ Thanks for the direction!

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