Vibration issue

[WannaBeBoosted]

Hey everyone, hoping you guys can help me out here. Just got this e53 x5 4.8is and have some issues. The current one is a vibration I'm getting from under the front end under acceleration. The harder I push the pedal, the worse the vibration gets. Goes away at idle or when just cruising. The weird part is that at times the car will go into trans failsafe program and the vibration goes completely away. I ordered the transfer case actuator gear already since I've been getting all the lights going on periodically as well. Would that cause a vibration like this though? Or do I need to look into CV axles or something? Not sure where to start considering that the vibration completely goes away when it falls into trans failsafe mode.

[White94RX]

Have you had the transmission module scanned for codes? That will help point you in the right direction. Anything else would be a guess.

[jclausen]

Or just have somebody do some dignostics in it