leajohnson23

Mercedes ML Bluetooth Connection Problem

Anyone else having Bluetooth issues with their 2009 Mercedes ML diesel? My phone suddenly won't connect. The system acts like it can't see it. I've tried restarting the phone, the car's system, deleting the profile and re-pairing. No luck. It keeps storing an error. Could this be related to the fuel system or suspension, or is it more likely electrical faults? I'm hoping it's not something major like the brakes or an engine light situation.

4 comment(s)

Sounds like a pairing issue more than anything else. Have you checked the Bluetooth module's fuse? Sometimes a simple power interruption can cause it to act up. The error memory thing is pretty common with these older systems. Have you had any other electrical weirdness lately?

Good call on the fuse, I'll check that. Where exactly is the Bluetooth module fuse located? And no, haven't noticed any other electrical gremlins so far. Just this connection problem. Could a faulty module cause this even if other electrical systems seem fine?

Fuse location should be in your owner's manual, usually in the fuse box under the hood or near the driver's side footwell. Yes, a failing Bluetooth module can definitely cause connection issues without affecting other systems. Given the age, it might be worth having a shop take a look and diagnose it properly. Could save you some headache in the long run.

Thanks for the advice! Turns out you were spot on. Checked the fuse, it was fine. Took it to a shop and they ran diagnostics. Incorrect pairing was the culprit, they reset the module and re-paired it. Cost me 45€, but at least it's fixed! Appreciate the help.

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