Has anyone got any updates on this sound. I've had door and window seals changed as the SC thought it was wind noise but I think it's coming from under the bonnet and I've had the Supermanifold charged already so not sure. I've read in other posts that if not the FDU it could be the openinverter ...

I had the same issue with my M3P and after several visits to the SC with no luck I had to get a mobile engineer to visit my house and he diagnosed it as the rear motor. Got booked in and they changed it. Weather is better at the minute with higher temperatures so not 100% sure if it is cured yet ...

Could anyone help me as I believe I have the same issue and driving home tonight my head is killing me with a high-pitched ringing? Had to take paracetamol as it's driving me mad. It was about 10 degrees outside and I get this noise on the 30-minute drive home that lasts for hours once I get home. I ...