Loud Noise

[Dubz]

I am wondering if anyone might be able help me before I go to the dealer tomorrow. When I hammer the throttle sometimes I hear a loud bang from under the vehicle but I'm unable to pinpoint exactly where it's coming from.

[X5devon]

it could be worn engine mounts or a worn joint on the propshaft

[Ajogu]

Is it just before the engine downshifts? If so and you have an E53, auto tranny, its your tranny software. A few of us have experienced this and the solution was a software update.

[Dubz]

It's when I put the peddle to the floor when I'm at a complete stop or at a slow roll.

[Ajogu]

Originally Posted by Dubz

It's when I put the peddle to the floor when I'm at a complete stop or at a slow roll.

Yup, its your transmittion. I had a software upgrade and solved the problem.

For more info, go through this tread http://www.xoutpost.com/x5-e53-forum/...ighlight=trans

Good luck

[Dubz]

The dealer told me that they thought it was the rear sub frame bushings.


Ajogu how much did it cost for them to do the software upgrade?

[Ajogu]

Originally Posted by Dubz

The dealer told me that they thought it was the rear sub frame bushings.


Ajogu how much did it cost for them to do the software upgrade?

I don't remember how much but I do know it wasn't expensive. I'm guessing about $100.
I suggest you read the thread I mentioned above before you see your dealer. I had to force my dealer to do the upgrade after 3 visits.