Hi to all. Our 2014 500L Twin Air is vibrating badly when changing up from 2nd to 3rd. The whole car vibrates. The car vibrates way more than normal when idling. It's been in the main dealer for 10 days while they try to figure it out. They have replaced an engine mounting and a drive shaft seal but it makes no difference. Could it be a dual mass fly wheel? The car is under warranty so it's no cost to me. c. 45k miles
Thanks
Adrian
Thanks
Adrian