Hello everyone. I would need help with couple of issues i have with my cl55 amg 2001. ABC front left is dropping down over a few hours by 40-50 mill and not as much,but the rear left goes down by about 20 mill over night too. and every morning when i start the car ABC red warning comes on. it does go away when car lifts back to normal position when i put in gear. Could it be that the rear drops because the front goes down quite a bit? I was told to change front valve block and it should be ok,but just to ask could it actually be the front left leg? Also when driving and there are small bumps on the road or channels, when i go over them sometimes the back of the car is kind of coming out a bit -feels unstable.Any thoughts? Thanks in advance.