Hi thanks for excepting me on the forum I’ve had audio a6 ultra 2016 when I put my blowers on full especially the window I’m getting vibrations in the steering wheel and thru the seat any one any ideas what the problem is be much appreciated thanks 

How odd. I'd get this checked by a mechanic asap 

My first thought was that the fan is out of balance, but it's hard to believe an unbalanced fan could shake the steering and seat.

Is the engine off when the vibration happens?

No engine is running if I turn blower off it dissapears mate 

It's got to be the engine causing the vibration. Nothing else on the car is powerful enough to shake it, except perhaps a brake servo or an AC compressor.

My guess is that the electrical load of the heater fan is somehow interfering with another control system, but that's a wild guess unsubstantiated by any experience. I suggest you take the car to be scanned.

I’ve got it booked into a garage next week 

Please let us know the outcome as I am intrigued by the problem.

Certainly will mate 

What news Christopher?

On 1/22/2026 at 8:14 AM, Nico 95 said:

Certainly will mate 

It seems that "certainly will" has become "can't be bothered".

Sorry for late reply as I’ve been out the country the problem was the blend door actuator sticking which was send a current back through the blower motor problem fixed