I recently got my head gaskets done on my '02 Disco, about a week ago. This weekend I was driving and my service engine soon, ABS, TC and Hill descent lights all came on but the engine was running fine. The next day I went out and strated it up. All the light were then off, so I went for a short ride and during it, both driving mode lights "S" and "M" and the "D" indicator on my dash stared blinking along with my service engine light. It seemed like the truck was shifting like crazy..... Any ideas? Could they have done something wrong while replacing the head gasket? Never had a problem before the head gasket. Any help would be appreciated. Thanks.

 

Go have your battery and alternator checked for free at your local auto parts store. The flashing "S" and "M" is a strong clue that the battery may be bad. If so, this could throw the tranny into limp in mode and that would account for many of your other symptoms.

Try this first and let us know how it goes...

 

The ABS/TC/HDC lights are known as the "three amigos" and are a common fault. I'd worry about those after you get your rig out of limp mode...fyi alternator needs to test between 13.6-14.4

 

agreed with above go get your battery and alternator tested out. then you can tackle the 3 amigos.

 

As for the SES light blinking, that indicates that you have a misfire. Get it checked out, because if you run it like that, you'll pump raw fuel into the cats, and contaminate your oil.