[SHADY1]

Originally Posted by L-Altos

I wouldnt gamble simply because there are too many electronic variables in the engine/drive train. Your SES light goes on, you go to the dealer and its an O2 sensor. No wait, the light came back on, its your other O2 sensor. No wait, its your wiring harness, I mean your ECU, i mean your catalytic converter. Hmmm, lets open a PUMA case?

Five trips to the dealer and I added up the parts/labor and diagnostics. Easily over 5K, and i didnt even see it as a big problem. It was just the computer unable to manage increased emissions. If the NAV/display goes out, same thing; could be a diagnostic headache.

The electronic systems on theses cars can be like a water leak in your house; fix the damage, address the problem, find the source etc.

+1 you are 100% correct don't take the risk . Get a extended warranty I had something like this happen to my current 2008 E92 M3. I had 52000+ miles on my M3 and my car went into limp mode Stealership had my car for almost a month throttle control valve went bad they replaced it, did not fully correct the problem something still wrong car not running at full power. It took them forever but I was in no rush since I am deployed. They torn my engine down only to find out bad O2 sensor as well. They also had to replace the spark plugs . It was a good thing I had a extended warranty because the only thing I had to pay for was the spark plugs .