What is a ASR light in a Mercedes Benz?

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1211459

2026-07-29 11:35

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ASR is a TRACTION (not Stability) control system. A Yellow triangle will flash on the dashboard in the speedometre when the system is limiting wheelspin and will stay illuminated when the system is turned OFF or has a malfunction.

Acceleration Slip Regulation... (depending on model year you can completely disable it. Known as ESP, Electronic Stability Control on later models).

With the switch light on (not triangle in dash) it will partially disable it up to 25 mph.

Normal operation is <25 mph brakes automatically apply with wheel spin. Over 25> the EA (electronic accelerator) control will automatically reduce engine output.

The triangle light in dash comes one when system is activated due to tire slippage.

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