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2004 A6 Quattro 2.7T. 118,000. I work at a Ford dealer. Brought the car into the wash rack for 45 minutes before I left work. Started it up to back out, tranny slammed into reverse, shift selector was all red but NO check engine or other lights - in limp mode. Limped down the street about a half mile and did a complete shutdown/restart and then it ran perfectly. Don't know if if it's connected but feeling some minor rear end "flutter" or "wobble" shifting between 3rd and 4th (AutoTiptronic) when it's cold but otherwise the car runs and drives great. Car has NOT had a tranny flush and fluid replace. Torque Convertor was replaced in 2010 at 98,000. Any ideas for me?
Hi Pete, Thanks for the reply. I did not wash the underside. The car was in the shop in August for an inspection and nothing visual was found but the tech drove the car and felt a vibration in the rear and suggested it could be a bent or unbalanced drive shaft. The limp mode thing happened last year, too. After 10 hours sitting outside in wind and frigid temps it went into this limp mode. On that occasion it would barely move forward but after about 20 minutes idling, it was fine. This time was strange because when I started it to bring it inside, it started fine and was not in limp mode. As I mentioned, no check engine or other warning lights, just the RED shift selector indicating limp. Can a dirty or clogged transmission filter on a cold start cause the limp mode?
I appreciate that and was thinking the same thing myself about the flush and filter. I didn't buy the bent or unbalanced drive shaft either, since it only happens now and then - especially on cold starts. The tranny flush and filter is the best bet, first, I agree. I will give you a good rating for the advise :-) It took about 4 hours or more for someone to get to me, though. :- l Thanks.