4alarm
February 8th, 2010, 18:17
Hello all - I'm new to this board, even though I've been following it for a while. I acquired my RS6 (in late July 09) and have been loving it ever since...
Until now..... Like others on this board, my fans have acting up and running on. They come on about 5 seconds after starting (high speed) and run maybe 3 mins after (low speed). When I got the car - the weather was hot, and I remember the fans started running not long after I got it. Then cold weather and the fans still running.... With hot weather, I thought OK - but not when it turned cold.
I've done all the searching and replacing of the parts that are associated with this issue.... at least that I could find.
First, we did the G2/G62 coolant temp sensor. Then the thermostat (and subsequent timing belt items). Then the secondary thermostat was replaced as well. We've checked continuity of the wires from the G2/G62 unit to the ECU. The most common fault we get is about the coolant system performance (2181 - not plausible signal). I don't have a Vag-Com (YET! - should be here this week...)
It has been at the dealer 5 times now. On the fourth time, someone drove the car (who hadn't before I guess...) and stated that it was way faster than the other RS6's they've dealt with. So - they put it on the computer and said they could tell it had been chipped (don't know by who). I didn't know this, and the previous owner in California apparently did not know about it either. They're cool with it (not telling my warranty co) - but it seems they want to blame the issue on the ECU now.
Could a chipped ECU cause this problem? (California tune????)
Dealer says they can't get a "factory" tune to re-flash it.
I can't afford to buy an ECU and swap it for testing.
I've been fighting this for 2+ months and I need some help.
Any advice????
Thanks - sorry for the long post.
Until now..... Like others on this board, my fans have acting up and running on. They come on about 5 seconds after starting (high speed) and run maybe 3 mins after (low speed). When I got the car - the weather was hot, and I remember the fans started running not long after I got it. Then cold weather and the fans still running.... With hot weather, I thought OK - but not when it turned cold.
I've done all the searching and replacing of the parts that are associated with this issue.... at least that I could find.
First, we did the G2/G62 coolant temp sensor. Then the thermostat (and subsequent timing belt items). Then the secondary thermostat was replaced as well. We've checked continuity of the wires from the G2/G62 unit to the ECU. The most common fault we get is about the coolant system performance (2181 - not plausible signal). I don't have a Vag-Com (YET! - should be here this week...)
It has been at the dealer 5 times now. On the fourth time, someone drove the car (who hadn't before I guess...) and stated that it was way faster than the other RS6's they've dealt with. So - they put it on the computer and said they could tell it had been chipped (don't know by who). I didn't know this, and the previous owner in California apparently did not know about it either. They're cool with it (not telling my warranty co) - but it seems they want to blame the issue on the ECU now.
Could a chipped ECU cause this problem? (California tune????)
Dealer says they can't get a "factory" tune to re-flash it.
I can't afford to buy an ECU and swap it for testing.
I've been fighting this for 2+ months and I need some help.
Any advice????
Thanks - sorry for the long post.