Hello, my Phaeton GP1 EZ 04/2008 is very worried at the moment. After about 2 weeks of service life, I fell on the front left side of the car. No error message on the next ride, chassis back up normally. Then after 3 days of service time, the fault memory was empty on both sides, when reading out in the workshop, nothing was found. According to the workshop, the residual pressure holding valves could be defective, but there is no need to check. ln and I would have to have both spring legs replaced, but that would be like an economic total damage. Basic adjustment of the chassis was carried out. I now left it for a week on flat surface and measured every day, after a week sinking in front left by 2 cm, front right 1 cm, rear right constant, rear left 0,6 cm. Up to 3rd day the height was constant, then again starting sinking in the front axle, at the same time climbing the rear axle, from the 4th day onwards. Day decrease front and back, front left most, front right also, back left also something, back right constant. But even directly after setting down the height values differ by up to 0.5 cm, strongest between front left and front right, about 1 cm. Does anyone have an explanation for this strange behavior? Bzw. how much tolerance of the height between the sides/axes are normal? The following questions burn me under the nails: About a month before the whole started before Is the most obvious reason really a defect of the residual pressure retention valve or could it be something more profane? Since the pressure seems to last 3 days, what could happen if I just continue driving like this? When searching for faults, the chassis was also re-set, since I get an error message with the ACC and Front Assist, could this be related? Thanks already for your ideas and help. V Greetings