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-   -   Intermittant ASR problem 1993 500E (http://www.peachparts.com/shopforum/tech-help/39898-intermittant-asr-problem-1993-500e.html)

semi 06-23-2002 04:18 PM

it's cable accel for my car part#140-300-03-30 ,ussualy special order MB does not have it instock. Cable that goes from pedal(insid the car) to the engine .

amg280 06-23-2002 08:19 PM

another question
 
I have another question on the ASR components. I looked under the kick panel of the drivers side and there appears to be 2 brake light switches. Which one is for the ASR? Also, just recently, Whenever I get in the car, start it, and drive 10 feet, the ABS and ASR lights go on. Now what gives? I cant catch a break with this car. And then to add insult to injury, the ASR still went into limp home mode after about 10 minutes. I really wish my car didnt have ASR. Its going to be the death of me.

ke6dcj 06-23-2002 08:24 PM

Andy- there is only one brake-light switch.

I replaced the brake-light switch, and the idle control switch (aka, CTP) which lives *in* the throttle lever, and I haven't received any ASR problems since (knock on Rosewood). You will need a Torx 8 bit to change out the CTP switch.

If I did, I was going to replace the neutral safety switch (lives on the side of the tranny), but I'll do that while I change motor mounts, since the engine/tranny (on a 500E) needs to be lowered to get access to the neutral safety switch.

My last thing to change will be expensive throttle actuator (fuel-injection wiring harness changed out last year by PO).

:-) neil
1988 360TE AMG
1993 500E

amg280 06-24-2002 12:31 AM

A quick guestion about the brake light switch. If your brake lights work, isnt the switch working? Just a logical though, especially since there is only one switch. Just trying to mentally narrow down the possible culprits.

ke6dcj 06-24-2002 01:13 AM

You would think it would be that easy. However, the brake-switch has two circuits complete circuits inside, and over time doesn't fully release.

Our wagon would function fine, including brake lights, but only have intermittant cruise-control. The cause, the $15 brake-switch!

:-) neil
1988 360TE AMG
1993 500E

tom woolner 11-23-2003 08:31 PM

Well, I'm experiencing the dreaded ASR lighjt/limp home mode happening. Of course, my warranty expired three months ago. It happened for the first time two weeks ago, and twice in 3 minutes today. Happens always within a few minutess of start-up after car is cold, and going moderate speeds.
Although I like my tech, he does not havee the latest diagnostic equipment, and I would NEVER take my car back to the local dealer RAB. Does anyone know of a tech in the Bay Area, hopefully the North Bay, with thisw diagnostic Equipment? In the meantime, I will start with the inexpenxive parts firat, ala Neil.


Tom
92 500E
126,000 miles

amg280 11-23-2003 09:31 PM

Join the club. Mine is acting up again. Same thing, ASR comes on, limp home mode. Happens mostly on the highway. Took it to the dealer, said I need new tires cause there is a vibration in it disturbing the sensor. That is a crock of $hit cause they are 4 brand new continetals that run as smooth as a babys behind. They just dont know and needed a diagnosis to charge me $85.00. I think I might have a actuator going bad perhaps or bad wiring somewhere.

Im about to bypassing this electronic throttle bull $hit all together. This has been a never ending problem with this car, and has run me into some serious money.

Either way, Tom, be prepared to spend a lot of money and have your patience tried.

tom woolner 12-08-2003 10:03 PM

Neil,
My car is still intermittently (every ten days or so) going into ASR/limp home mode. It is throwing ONLY #6 code. Is it worth it to replace the other cheaper things first, if it's not throwing any other codes?

Tom
92 500E

ke6dcj 12-09-2003 01:44 AM

If you can get the dealer to print out the codes for you, then you can target the low cost parts replacement.

IMHO, it's worth 30-mins. of the dealer's time.

:-) neil

tom woolner 12-09-2003 05:14 PM

My indedpendent checked the code for me for free. It is only throwing #6, which is only the throttle body. It's not throwing any other codes. Should I replace the cheaper stuff first, or just accept that it's the throttle body?

Tom

ke6dcj 12-09-2003 05:23 PM

Tom- I don't know if the non-MB testers can get all the codes or not.

I'd replace them, and if that doesn't fix it, go to the dealer and get the codes like I did.

:-) neil

TomE500 12-09-2003 07:27 PM

If it quacks like a duck!!
 
and it walks like a duck

Then it probably is a Eucking duck!

sorry - Damn "F" key is broken :D

Order the part from Mshop.com (don't forget the gasket) swap it out with your existing firstilzenwanger sans gasket. clear the codes and crank her up (126,000 !!!- wadda yah expect a free ride forever?)

If your problem is history - shut her down, pull the OK valve, clean the area and install the new gasket and reinstall the new/rebuilt firsttilzenwanger(German for tuck it to the Yanks fer this piece of itshay German Engineering -no wonder they lost the var-prolly put the same part in their Panzers and Messerjonzes-TG)

Don't forget to clear the codes again and do a check of the short harness for brittleness in outer casing - if nunsuch

WINDERUP BABY!!!

Tom


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