High pitched whining when head unit is on. Intensifies when accelerating. Buzzing sound when switched off, even when engine is switched off.

Asked by May 08, 2017 at 03:35 PM about the 2004 BMW X5 i

Question type: Maintenance & repair

3 Answers

1,680

Hi GuruCY7, it sounds most likely that you have an earth problem somewhere on the car, or possibly that some of the speaker wiring has worn through and is shorting out on the car's body. It's also possible that there's a fault with the car's alternator, or an internal fault with the car's head unit. I'd recommend getting it to an auto electrician and hopefully it won't be an expensive fix.

1 people found this helpful.

Thank you for your response. I have already booked it in with an auto electrician. As you say, let's hope it's not too costly a repair.

1,680

Good luck, and do let us know what the fault was as it may be helpful to ther owners on here. Bob

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