sbeasley4

Hello,

I'm curious to get some feedback on my Q7 suspension issue. So everything on the MMI display adjusts without and issues but only under 20mph. Once I reach 20mph or above all options on MMI are "greyed out" and the car defaults to automatic mode with a very stiff bumpy suspension ride. The front has a slight bit of rake in it as well. At that point the settings do not become available until the car has come to a complete stop.

Any ideas? I am thinking about replacing the relay for the compressor to see what that does before I sink anymore money....

D3Audi

Isn't it supposed to be un-selectable over a certain speed as a safety feature?

sbeasley4

You may be right on that but I don't think that the yellow warning light on the instrument panel is supposed to stay lit...

Edd W

No, neither green or yellow warning lights are meant to be on all the time. The green should illuminate occasionally as the height is adjusted but the yellow should not show at all.

We need codes but I doubt it's a fuse issue.

To me it sounds more like level sensors or check valves.

What does it do when left parked overnight - does it stay at the same height and does it look even front and rear?

sbeasley4

Do you know of a free scan software besides Ross tech that isn't so expensive?

Overnight it stays in the same location with the front slightly lower than the rear.

D3Audi

Carista iPhone/Android App with an OBDII Adapter.. App is $20 and adapter is $15-$20

It won't go as in depth as Ross tech will, but will show Audi specific codes and allow for them to be cleared.

krismc

my 2009 is still selectable when moving, i believe lift disappears above 20mph, and off road above 40, but comfort etc all selectable.

sbeasley4

So I found out this afternoon that the left front acceleration sensor was severed and the wire was cut. Logically those front sensors probably only work over a certain mph so this could very well be the problem since everything else seems to work.

The only thing I can do is replace it and see what happens!

cuatrokoop

Only lift and offroad mode are disabled above about 20mph. Lift is actually lower mph than that, maybe 5-10? I forget, I don't drive the 4.2 daily.

Edd W

That will be the problem then.

While you're there, check the black plastic bracket on the end of the level sensor arm is securely attached to the upper suspension arm - they tend to work loose which reduces the accuracy of the level control.