Jim M.

About a week ago I started having 4 different warning messages. (see pics) Car is under warranty so I made an appointment with the dealer. Outcome was they found a bad coil on the #4 cylinder. The technician swapped the coil with the #3 coil, drove the car and confirmed the problem moved to the #3 cylinder. He then reinstalled the coils to their correct location and replaced the #4 coil with a new unit. I read these forums all the time, even well before I bought my TTS. Coil failures appear to be very uncommon. Just wanted to pass on the info if anyone has similar problems.

NiteJav

That's crazy that a coil pack failure could cause that laundry list of failures.

Papa Fittig

Thanks for sharing. Good they found the root cause.

hcvone

I had a 5.9 grand Cherokee, when one of the coils failed it gave codes for radio failure among about 10 others nothing having to do with the coil. Thanks for the info