I know there is alot of ASR questions on here. However, I have a 93 500SEL w/ 140K miles. Today, I was on the highway for 20 miles, got off, and when I accelerated, it went in to what feels like the Limp Home Mode. (Had that problem with a 94 I had) BUT NO ASR LIGHT. I turned on and off the car. That would always reset my old car. I did go to a car wash today, could something have gotten wet? Des anyone know what else causes LH Mode, other than ASR? Car runs great otherwise, and has plenty of oil pressure, etc.

Thanks

There are many things that have to work in concert for this system to work properly. Model years 92-95 have a known wire insulation issue that could also be the problem. The insulation on the wires degrades over time, and it will crack and fall off. This causes shorts in the wires. I would suggest you first see if there are any fault codes stored. If not, check the wire condition of the Electronic Throttle Actuator and Air Mass Meters. There are also potentiometers in the ETA that can go bad over time. I'm attaching a few links for you to read...

http://v12uberalles.com/AMM_rewire.htm

http://v12uberalles.com/throttle_actuator_rewire.htm

http://pages.prodigy.net/jforgione/MB_asr.html

__________________
1995 S600, 1 of 618 (sold)

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Thanks,
I just thought those things had to do with the ASR light coming on, and maybe this is transmission related???? I have a very good Indy in Cedar Rapids. I will get the codes read.

After reading those links, out of all of the things that could cause a limp home problem, you're wondering if it's transmission related?

__________________
Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".

Mechanic just called. He said the Auto Protection Switch on the Tranny was bad. It caused the transmission into the limp mode. ( Shifts bad, retards timing etc.) I also had a leaky trans line up front under the bumper. $400.00 bucks to fix. Better than I thought.

mechanic fixed the tranny stuff, but still starts up like there is a load on the engine. low idle rpms, and no peddle response. Any suggestions? Feels like limp mode, but no lights on on the dash.