Thread: Ads
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Old 09-14-2001, 10:34 AM
A. Rosich's Avatar
A. Rosich A. Rosich is offline
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Join Date: Nov 1999
Location: San Jose, Costa Rica
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ADS / ASD / ASR / ETS 4 Different Things!

People, Pleople, get your act together! (Just kidding!)

But, to clarify the waters, here it is a simple description of the differences between ADS, ASD and ASR / ETS.

ADS = Adaptive Damping System
Details in my previous reply above.

ASD = Automatic Locking Differential

ASD monitors wheel slippage using the same sensors as ABS (Anti-lock Braking System). During acceleration at lower speeds, if the system detects wheel slippage, the differential automatically locks until traction is regained.

ASR = Automatic Slip Control

ASR acts on the rear wheels during acceleration, controlling both the brakes and/or the throttle in order to mantain maximun traction, control and directional stability.

ETS = Electronic Traction System

ETS senses drive-wheel slip under acceleration up to approx. 25 m.p.h. and individually brakes the slipping wheel to regain traction.

ASR = Automatic Slip Control

ASR senses drive-wheel slip under acceleration at any speed and individually brakes the slipping wheel and/or reduces engine torque bu cutting back throttle until available traction is regained.

The last four systems explained all deal with traction, and are completely unrelated to ADS, which is a very sophisticated (and expensive) suspension system (the father of ABC?)

The C-Class in 1995 had the ETS as part of Optional Package C1 in the C230, and the ASR was fitted to the C280 if the same optinal package was ordered.

A. Rosich
S320, 1998
E320T, 1995
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