Tip & How-To about Mercedes-Benz E-Class

90's Mercedes ASR light on issue

In the 1990's the ASR system was introduced into Mercedes Benz. Traction control was a great feature but now these systems are aging and giving people hard times with the "limp home mode".

First is a simple check. Sometimes the accelerator cable becomes bound or tight. As holding the gas pedal down from the hood while starting will initiate the ASR limp home mode condition back off the adjustment to put just a little slack in the cable. This will allow no tension at start up and allow light not to come on. Lubrication of the cable is a great idea at this age also.

There is also a speed sensor on the front drivers wheel behind the hub that should be removed and cleaned to provide accurate wheel speed and let the system operate correctly. Also in most MB's of thiese years there is another sensor in the rear end that reads rear axle speeds for proper traction control. This unit is better replaced than cleaned due to the high use and heat from exhaust and milage involved.

If you have been to push the gas pedal to start your car there are other issues involved than ASR and you should look into your ignition parts or fuel delivery system.

I hope my tip helps those with this problem.

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1 Answer

What is the defination of ASR, what does it do when it is on and off of the asr.

ASR is the German abbreviation for traction control. The word is Antriebsschlupfregelung and If there is a switch that disables it, it should not be disabled unless you are trying to get the car out of a slippery position like stuck in snow.

Feb 09, 2015 | 2003 Mercedes-Benz S500

1 Answer

how to disable asr 1997 mercedes E320

you may not be avail to disable, actually let me re-frame that, when the light is on the system is disable, limp mode.
is hard to do with out a scanner, but if you have one, replace your brake switch, and reset the light. the brake switch controls the ASR/ BAS/ STABILITY CONTROL/ THE CRIUSE CONTROL. CHANGE IT WILL FIX YOUR CAR.

Apr 26, 2014 | 1995 Mercedes-Benz S-Class

1 Answer

the car without moving the asr light will come on and powr is diminished 1991 sl 500

The first thing to do is have the battery and the charging system checked,if the asr system detects less than 11.5 volts or loss of power it shuts down and turns light on,

Jun 16, 2010 | 1991 Mercedes-Benz Mercedes Benz 500 Class

1 Answer

My ASR ligth keeps coming on and the cars slows

A.S.R. is anti slip regulator,it is connected to the abs system so that when you are on a loose surface the wheel that is loosing grip slows down until traction is achieved,SO, if you accelerate really hard.and you get wheelspin,the car basically shuts down until you get full traction.feels funny but you wont get fined for tyre squeel.try putting two wheels on grass and two on tarmac then flooring it........

Apr 13, 2010 | 1994 Mercedes-Benz S-Class

1 Answer

Indicator lighting

ASR is the Anti Slip Regulaor or traction control not sure about BAS possibly Brake Assist System sounds like a brake issue or a bad sensor

Mar 29, 2010 | 1999 Mercedes-Benz SLK

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