After 4 weeks and $$$$$$ my 93 600SEL ASR light is still on
I have replaced the Control module and both throttle bodies.
It ran like a champ after the Thtrottle body instal then the next morning right back to where I started ..."ASR" Light on and in LHM.

I purchased a code reader from ebay and it now reads

#30...ASR only: CAN data bus to EA/CC/ISC control module interupted.

Does anyone know what this means and how do I fix it?

Any help would be much appreciated.

How about the wiring harness, have you checked it for 'cracks'??

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Regards . . . . JimF
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'94 S500 Cpe

Visit my Mercedes Web Page

The wiring harness seems OK I have inspected in in many areas and have no signs of cracking. The ETA's on the otherhand were all cracked and looked terrible. I just had them rebuilt at BBA Reman.

When only the ASR lamp is on you need to read codes from the EA/CC/ISC computer not the ASR computer. I know that doesn't make sense BUT.....

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MERCEDES Benz Master Guild Technician (6 TIMES)
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Pages 48/49


http://www.geocities.com/MotorCity/Downs/1039/mercedes/cs1000_mb.pdf

I had a similar problem with my 91 560SEL. The ASR and ABS lights would come on sporadically. The car wint "limp" on occasion, then it would be hard to start. I replaced the OVP Relay - same issues. I replaced the battery 2 weeks ago and all problems stopped. Everything is still fine two weeks later. No ASR,ABS lights, easy starting! How could that be? I thought the battery was a non-factor once the engine is running.

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1991 560SEL (254K miles)
1980 Lincoln Mark VI - Givenchy
1979 Lincoln Mark V Collector's Series
1979 Lincoln Town Car Collector's Series
1979 Ford "Effie" Pickup (in gradual transformation to a show/street truck)
1969 Lincoln Mark III (waiting for "Overhaulin" to call)
1989 Lincoln Towncar
2001 Lexus GS300 (spousal unit's daily driver)