I have an 59 Plate Laurin & Klement 2.0 PD TDi Auto DSG saloon with 150k miles and on a recent trip towing a braked trailer at 50mph all of a sudden the car kicked into limp home mode and would not exceed 40mp at 3000rpm in 3rd.  I made it home no problem.  Unhooked the trailer.  Took the car for a good run (it resets itself out of limp mode when you restart it) and it seems to have stopped happening and has returned to normal.  I am presuming it was the DPF that needed regenerated as my wife does a lot of small trips in this car and think that it was perhaps clogged a bit and needed burnt off.   The warning symbol stays on and was wondering if there was a hack to get the warning light to go off.  

 

Thanks in advance.  

Sorry.  My grammar and spelling is horrific .  

That is not the DPF warning light and the engine would not go into limp mode if it simply needed a regen (which is unlikely if you were towing at 50mph as the engine would be lovely and hot).

 

Are you able to do a VCDS scan, there is probably a fault code stored. In the first month I had my car it went into limp mode 3 times randomly, each time it would clear when I cycled the ignition, I bought a code scanner and there was something about EGR fault which I cleared, and the car has driven perfectly ever since.

Edited 11 July, 20205 yr by slow_nick

could be turbo overboost from sticky vanes 

the light on your dash is the engine management if you plug a scanner in it'll tell you the code and then you can work out the fix from there. 

 

I agree that it shouldn't be DPF related.

Must be scanned. Otherwise it will be just a guess.