What is the difference between ETS and ASR? Is ETS a locking differential type system whereas ASR is purely electronic?

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1989 300CE

I'm familiar with the ASR in my '94, electronic brake application and throttle reduction. ASD in the '90s 124 and 126 diesels was electronic-hydraulic locking of the differential. ETS is a later system the in which the details I'm not familiar.

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Gone to the dark side

- Jeff

ETS is brakes only, creating a "locked differential effect". By comparison to ASR it is extremely untroubled.

http://qclt.com/train/w202/w202/tractcontrol/etstech.htm

ETS is brakes only, creating a "locked differential effect".

That's what I sort of thought. I wonder which one is more effective? I know that early ASR cars were always causing headaches. When did Mercedes finally perfect the system?

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1989 300CE

When they went to ESP...the system was 99.99%

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