Mercedes Benz Abc Suspension Problems

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4 Comments

  1. I replaced the main line hose (pump to valve body) on 2007 sl 55 amg after paying mechanic to do so he gave me a deffective hose that had a built in leak he did the rodeo all checked out then now big puddle in the garage so i replaced the hose myself furiuose of course after paying to get it done did not perform rodeo made car go up and down 20 times drove car 2 hours slow no problem next day pulling into gas station my front driver side strut stuck all the way up wont come down
    disconected battery and raised car so no pressure on shocks as of now what can i do to lower front strut

  2. Great information Thanks

  3. Hi Len,
    Was Rodeo run after replacing the ABS hose? There is a chance air may be on one of the lines. If that is already done, then I would investigate more on why its not calibrating. Post the above question on youcanic.com/support for a better experince.

  4. Len de Krou says:

    Hi there. Thanks for this article as it is comprehensive. I have a 2003 S55 AMG Kompressor. ABC Hydraulic pipe burst and my troubles started. (Stopped car immediately) Fixed (Replaced pipe) Replaced both front struts (One plunger sensor failed but replaced both with Refurbished ones). Have a basic reader. (Before pipe burst replace accumulators, replace damper and serviced valve blocks (O-rings)). Main symptom, car will not go back to level as before. By opening the bleeding valves I detected very low pressure at struts (Car it trying to left and bag slowly go up front will not go up, probably of weight of engine). I suspected Pressure control valve (at damper) being damaged during pipe burst. Replaced that whole unit (including damper. Now instantly car will lift but still not to an even level Pump pressure at diagnostics 182 bar. Then brought it to 2 x Mercedes dealers for calibration (My Diagnostics cannot do that). Both dealers failed. also so tried “so called” experts who also failed to complete the calibration process. My diagnostics can show plunger positions, level sensor positions, pump pressure which are all reading properly. Even had the dealer replace and match in to the car via a network link to Germany, another ABC control unit but they said it worked but not solved the problem, Now struck. Now considering the other body sensors (Acceleration Lateral and longitudinal, yaw etc.) but no where in any publication it indicates that a fault in one of those will “Block” the calibration. According to all who tried they say it goes to the steps and passes but the last part, uploading it all into the Control Unit Fails. !!!!. What I can do:
    I start the car, reset all DTC’s and the car lifts to max height all around. (Dash Lift Button works) when I the drive forward or backward ever so slightly the car drops on one side sort of trying to match the car to parameters stored in the control unit, “Thinking is is now right”. When I reset DTC’s and car it at full height I simply disconnect all plunger sensors and the RED ABC comes on (Probably shutting the whole system down) and then I can drive the car at the full height but indeed feeling bouncy. I can park it in that state and it stays up weeks on end. I NOW I AM STUCK

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