My mercedes sit too low when parked for 4 to 5 hours, I also get the ( Do not drive car too low) the car raises up as soon as start her up. Thanks in advance Mr. YYY

Most commonly, Mercedes S Class suspension leaks from either the struts or the suspension valve assembly. If the whole body is lower, very likely that it's either the compressor or the valve assembly. If one particular section is lower (eg. front left/the whole front), then it could be a hose or strut(s). This is a particularly expensive repair, but I highly recommend you get it done because the leak causes the compressor to work longer and harder than normal and will lead to premature failure of the compressor. Hope this helps.