Question about 1995 Mercedes-Benz S-Class

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The asr light is on and the car does not

1995 Mercedes Benx s420, the ASR light and engine lights are on and the car does not excellerate, very low power. Had it check problem not found. Told possibly oxegen system, Help

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The o2 senser would not cause the a.s.r. light to come on-there is only 2 things that the engine module and the a.s.r. module have in common. 1 is the e.a. actuater(throttle) and 2 is the base module. most likley either your acuater has to be resynchronized or the actuater itself is bad. have codes pulled from your h.f.m.,a.s.r.,e.a-i.s.c.-c.c modules and see what the codes say. You will probably find that they say e.a. actuater module is defective. the pig tail connecters go bad and they need to be replaced just be glad you do not have a 600 series because they cost about 1200 a piece and the v12 have 2 of them. If it is defective and you cannot resynchronize it there is a company that rebuilds them for about 1/3 the cost of a new one- good luck

Posted on Jun 17, 2009

  • mcmillan1120 Feb 01, 2011

    great advise. so what is the company that rebuilds the pig tail connectors?

  • Israel Campbell
    Israel Campbell Nov 08, 2013

    Do you mean the asr abs light will stay on everytime the engine is on?

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Mostly this problem appends on winter time. I f you take your car to the dealership you could throw your money away like many people did and the problem still not solve. I fixed mine definitely by myself and you could do it too. 1- Open the hood, Jack the vehicle. On both front tires you will see a cable that looks like a Rca jack that connect to the brakes but it's bigger than RCA jack. 2- Follow that RCA cable to the hood and on the other end tou will see 2 small white wires that bring power to ASR and ABS system cut those 2 wires and you automatically disable the ASR and you solve the problem. As you know the ASR system is good for snow, it's like a 4 by 4 and you will need it later to drive safely in bad weather when there is snow. What to do next. After cutting the 2 small wires, I put 2 swiches in case I need the ASR in bad weather.One swich for ASR and the other one for ABS. when you cut one wire you connect both ends to the swich and you do the same for the second wire that you cut. The only one thing you will see is the ASR and ABS light will turn on on the dash. When driving in bad weather, open the hood and turn on the swich

Posted on Dec 06, 2011

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1 Answer

Asr light does not go on


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Nov 29, 2013 | 1995 Mercedes-Benz S-Class

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Mercedes benz s420 series asr problem


Mostly this problem appends on winter time. I f you take your car to the dealership you could throw your money away like many people did and the problem still not solve. I fixed mine definitely by myself and you could do it too. 1- Open the hood, Jack the vehicle. On both front tires you will see a cable that looks like a Rca jack that connect to the brakes but it's bigger than RCA jack. 2- Follow that RCA cable to the hood and on the other end tou will see 2 small white wires that bring power to ASR and ABS system cut those 2 wires and you automatically disable the ASR and you solve the problem. As you know the ASR system is good for snow, it's like a 4 by 4 and you will need it later to drive safely in bad weather when there is snow. What to do next. After cutting the 2 small wires, I put 2 swiches in case I need the ASR in bad weather.One swich for ASR and the other one for ABS. when you cut one wire you connect both ends to the swich and you do the same for the second wire that you cut. The only one thing you will see is the ASR and ABS light will turn on on the dash. When driving in bad weather, open the hood and turn on the swich

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1 Answer

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May 07, 2010 | 1995 Mercedes-Benz S-Class

1 Answer

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Jun 04, 2009 | 1995 Mercedes-Benz S-Class

1 Answer

ASR light, on,drives like the brakes are on what to do


hello,good day,you can erase (using hht or star) but might be back again,part tobe check,,engine wiring harness,ldling actuator,sensor,connection,better to send your car to a dealer,they have diagnosis manual to guide them step by step,special tool like diagnosis cable,contact box and a simulator,this step can pin point the defective part,ty

May 31, 2009 | 1995 Mercedes-Benz S-Class

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