What The Hell
 

I just got back from the dealer from the 15000 mile service on wifey's 2012 A7. The EPC light comes on while driving home. Besides the usual maintenance for the 15000 mile plan, they did a P/S program update and performed a drain valve installation.

Of course, the service department is not open on Sunday, so I am screwed till Monday.

Any ideas?

If the car is drivable I wouldn't get too excited about it and wait till Monday morning - what else can you do???

I wake up today...go out to VAGCOM and no EPC light. Wifey has been driving the car and no issues.

Saw this problem mentioned on Audizine site....maybe oil pressure switch/oil filter not tight enough. FWIW

http://www.audizine.com/forum/showth...d-of-4-000-RPM same problem as yours but on an S4. It was an oil pressure switch.