W124 E320 ASR defeat?

Discussion in 'Electronics' started by XJguy, Dec 6, 2018.

  1. XJguy

    XJguy Member

    Messages:
    43
    Joined:
    May 15, 2013
    Location:
    NY, USA
    Car:
    1994 E320 Coupe
    Does anyone know how to disable ASR and keep it off without disabling ABS?
     
  2. grober

    grober MB Club Veteran

    Messages:
    25,009
    Joined:
    Jun 22, 2003
    Location:
    Perth, Scotland
    Car:
    W204 C200CDI Estate
    Last edited: Dec 6, 2018
  3. OP
    OP
    XJguy

    XJguy Member

    Messages:
    43
    Joined:
    May 15, 2013
    Location:
    NY, USA
    Car:
    1994 E320 Coupe
    I have the snowchain button, but it only defeats it partially and very briefly. I need to be able to shut it off totally and keep it off until I turn it back on.
     
  4. grober

    grober MB Club Veteran

    Messages:
    25,009
    Joined:
    Jun 22, 2003
    Location:
    Perth, Scotland
    Car:
    W204 C200CDI Estate
    It would appear that the switch alters the slip threshold to allow the wheels to spin a bit to drive out of snow rather than defeat the system completely as you say.
    http://www.w124-zone.com/downloads/MB CD/W124/w124CD2/Program/Chassis/42-0800.pdf#page=17
    Unfortunately since both ABS and ASR share circuitry so it would appear that disabling one would switch off both! It might be posssible to downgrade the system to an ABS only system by swapping control units and a bit of rewiring but MB control units are essentially black boxes and don't know if anyone has tried this?
     
  5. grober

    grober MB Club Veteran

    Messages:
    25,009
    Joined:
    Jun 22, 2003
    Location:
    Perth, Scotland
    Car:
    W204 C200CDI Estate
    Apparently it can be done according to this . Its under Performance upgrades/ 4-1-06 - ASR Defeat Installation
    Rik Johnsons Mercedes 500E
     
  6. OP
    OP
    XJguy

    XJguy Member

    Messages:
    43
    Joined:
    May 15, 2013
    Location:
    NY, USA
    Car:
    1994 E320 Coupe
    Yes for the V8 cars and for the newer cars it can, relatively easily. But so far I have not found anything for the pre 96 six cylinder cars.
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.