I purchased a 2015 991 C S and the driver's seat shifted while accelerating and breaking. The dealer changed the base and solved the problem. Traded that car in for a 2015 991 Turbo S and the seat started shifting like the prior car. Dealer changed the base and the problem stopped for a while but is now returning. Has anyone else had a similar problem and if so, how was it addressed? Much thanks

 

Weirdest thing I have ever heard. Has never happened to me. Guess its back to dealer.

 

I gained 50 pounds. Problem solved! :-)

 

No, never had the issue.

 

Thats very odd, those bolts and nuts are special, nylon to prevent loosing from vibration, sounds like the assembly line socket on the air tool is to short!! Or maybe they hired an ex UA Worker from Detriot?

 

are you putting your seat in the same position all of us do? are you super tall or short or drive with the seat reclined so your ears are in the back seat?

 

Very odd...wondering how big are you?

 

Why don't you try removing the plastic cover at the front of the seat rail on the seat that is moving and torque the bolt. If it is not tightened all the way down it will allow the seat to move.