A hello to all MotorTalker and request for help : I try to describe my problem as well as possible , since a repeated reading of the error memory shows no defect : My SL 500 / EZ 02 -2002 / approx.142000KM occasionally swings up in the stand at the front axle left + right and then pops down literally within seconds again … That makes it times after 5 KM ride , then everything is OK again for 100 KM , then again minutes high – down : Almost as with Rodeoreiten…. With longer time in the stand when the garage door opener was learned to a new gate, it also happened. (The fitter got off credeble and talked about the miracle car…) The car was now some time in Wittenberge at the company exclusive-automobile for repair: unfortunately without success…: The ABC valve units, the ABC hydraulic pump, as well as a leaking spring leg in front left and the system flushed…. After these repairs the car… picked up ; 90 km highway direction home everything OK ; then standing in the traffic jam the same problem again :He drives within seconds the chassis first right , then left up and then pops down to the lowest stand … The car returned , connected to the star tester : NO RECOVERY … !!! Manually the chassis can be moved over the center console perfectly up & down … Above mentioned company is now also quite at a loss , refers me now to MB : That can nd be the control unit, which can only exchange and program MB or maybe the motion sensors. Since I have the desire to experiment, I ask the experts here for advice…., thank you in advance & Gruss easylife