audi.q7

Hi all,

I have a Audi Q7 -2007 with the Aisin 09D transmission. The problem is that sometimes when changing gear the transmission will create a loud banging/knocking sound and miss the gear. The rev goes up and it sounds like it is trying to engage the gear several times. As soon as I let go of the throttle and the rev goes down it will engage the gear. It can happen when changing to any gear. Using Tiptronic mode doesn't help. The problem is more frequent if I'm accelerating heavily.
The odd thing is that when the car is cool the transmission works without any issues, it only happens when warm! No error codes has been found. I have changed the oil in the transmission but it didn't help.
I'm thinking it might be something in the valve body or the TCM.

Anyone with similar problems and got it fixed?
I deeply appreciate if someone has an idea of what's causing this..

jonoliver78

Hi did you find what the fault was and have you cured it? I have a 2008 Q7 suffering with the same faults, I am currently having both inlet manifolds replaced and the bosch engineer is saying this will solve the transmission issue. I have seen nothing on any forums to suggest these will be linked?

Gavin0478

First thing i would do is change the gearbox oil as when it gets warm it gets thinner and perhaps its getting too thin now.

bchitsaka

I am aware this is a thread from some years ago but has anyone managed to understand the reason why this happens only when the car is warm
and how you solved the problem,please kindly advise,thank you 🙏

-Wes-

More details! What is your car's year; how many miles; has the fluid ever been changed?