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Old 11-04-2002, 01:30 PM
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Join Date: Aug 1999
Location: Mission Viejo, CA, USA
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1992 400E Disable ASR

How can I disable the ASR on my 92 400E? California smog test requires running the car on a dynamometer. When I brought it in yesterday, the tech could not get it to work because the ASR kept triggering which aborted the test. Owners manual was of no help.

Thanks,
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  #2  
Old 11-04-2002, 02:35 PM
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Location: CT, USA
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Unhook a front wheel speed sensor - it'll take ABS & ASR off-line.

Do a search; I posted a picture some time ago
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Old 11-04-2002, 07:52 PM
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Thumbs up

I don't think its the duty of a Smog inspector to disconnect the wheel sensors. So I looked for another inspection station and found the answer:

In California, cars with slip or traction control and without a disengagement switch are tested the old way -- meaning no dynamometer. The tech said this is common on Mercedes. The only surprise is that the inspector yesterday did not already know this.

Test done. Car legal.
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