1997 S-500 Transmission Control Unit

[JFawcett]

Well, was driving down the freeway...look down and the Speedometer is showing 0MPH, the yellow triangle is on, the ABS light is on, the BRAKE light is on, the Brake Pad Warning LIght is on, and the ASR Warnimg light is on.....in short, I have a full Christmas Tree on my dash. And then, all is well. The car goes right back to normal.

Next day, same thing happens - only this time, the power steering gets very firm and the car won't up-shift.....glorious.

SO...take to the mechanic - he plugs into the magic Mercedes machine and the car tells him that the transmission control module is out as well as the brake pedal position switch......so we replace and all seems well with the world. That was yesterday.

Today, crusiing down the road....the same thing happens. After several explicatives, the car "fixes" itself again.

SO it would appear that the car lied to the mechanic yesterday and is now not happy.....does anyone have any ideas here?

Obviously not the TCM or the brake pedal sensor. Trust the mechanic implicitly.....

THanks!