Hey all, long time listener, first time caller...

Whilst driving on the motorway today, my 1 Series started making a LOUD high pitched chirping noise, which seemed to be coming from the left hand side of the dash, near the air con vents. I thought it was air-con related, but it carried on when the air con was switched off. I then thought it was wiper related, as it was raining, but it persisted when they were off too.

It is intermittent, but seems to occur whenever I was putting my foot down, anything over 60mph. Otherwise the car seems fine.

Any and all advice would be very welcome.

Thanks
Simon