Hello,I will be glad to try and assist you with this,Welcome to Just Answer.
I just need a little more info to try and assist better.
Have you noticed any fluid leaks on the ground at all lately?
Was anything done to the vehicle right before thei message started to appear?
Did you notice the vehicle low to the ground on any sides when this message displayed or was it bouncy on one particular side of the vehicle?
Let me know and we can continue from here,Thanks Pete!
O.k.,this can be caused by a valve block issue that distrbutes the fluid to the hydraulic shockes when needed to support the vehicle and ride and as well as to raise the vehicle.
The pump for this system is a tandem pump pumping both the power steering fluid and the hydraulic fluid for the abc suspension system,I dont think you have a pump problem here as in most cases the power steering would fail as well if it were.
You dont have any leaking shocks as there has been no leaks on the vehicle so what I think you have failing here is possibly a valve block that distributes the fluid and maintains the pressures and levels,this can bew common.
This vehicle most likely has two of these so the best way to find out which one or what is failing is to have the vehicle hooked up to the Mercedes dealers SDS machine to read out and repair any fault codes.Most likely they will find a valve block concern here that is at fault.
These can cost somewhere around $300 and can take up to 4 hours or more to install and bleed the abc suspension system.
Let me know if you need anything else,click accept if you feel satisfied with your answer as this is how I get credited for my time,Thanks Pete!
There are a few different bulletins out for abc suspension faults and different fixes as well but the code would have to be checked with a dealers sds machine first to see what codes are set and to see if any of these bulletins apply from what codes are retrieved.
If the fluid is leaking from the top of the reservoir then most likely this is a symptom of the problem.
This will have to be checked by a dealer to locate a valve block or pump concern as well as any other concern that could cause this.
This doesn't sound like the problem but more a reaction from the problem,a dealer can check codes to see if any component is failing and is causing the reaction.
This fluid can become flammable under certain heat so it would be best to have this checked and repaired as soon as possible.