Sehr gut!!
Sent from my iPhone
> On Jan 7, 2024, at 6:04 PM, Floyd Thursby via Mercedes
> wrote:
>
> This thing was slammed, happened a few weeks back so it has been sitting.
> Was not clear what the issue was. Appeared to be an issue with rear bags so
> I ordered 2 new ones and put them on. RR was not holding air, LR appeared to
> have air. Did not solve the problem. DAS was saying the air line to the
> reservoir or the line was not right, or the pressure sensor was bad, or
> something not specific.
>
> So I ordered a "new" used reservoir off ebay which was a double tank whereas
> the one on the vehicle was a single tank. I guess someone had thrown one on
> there at some point in the past. Still had the problem, same error code with
> the pressure sensor and the reservoir was not pressurizing or holding
> pressure, so I ordered an airline going to it from the valve block and put
> that on. Still no joy and same error code which was puzzling, and tank was
> not holding pressure.
>
> I ran tests using DAS and kept coming back to this problem. I broke down and
> ordered a cheap pump and valve block off Amazon and put them in, and put the
> original air line back on the valve block. The old valve block was some
> no-name thing kinda like the new one I put on. I had the right side jacked
> up and the lower arms sitting on blocks so I could have the front tire off
> and get to the reservoir in the rear (under the vehicle). That at least
> would allow the system to pump up thinking the tires were on the ground. I
> was still getting the same error code, and it did appear to be pumping up but
> not correctly. This was very strange as aside from the front struts
> everything was new.
>
> So today I just decided to put the front wheel back on and drop the right
> side back down on the ground and see what happens. I put the computer on it
> so I could watch what it would do, and LO! I started it, the pump was
> pumping, the vehicle was raising, and everything was showing good with no
> faults. I did an automatic level calibration using DAS and everything seems
> to be sitting comfortably now. Halluhlooyuh!!! Yay me!
>
> I have to take the RF wheel off again to get the pump and valve block back in
> their places and bolted down and put the liner back on, that should be good
> for now. So, a success there it seems. In doing some research it appears
> the pressure sensor I was getting errors for is inside the valve block on
> this vehicle. Not sure why it was showing a fault after I put in the new one
> but it had no faults today so I'm calling it good.
>
> The rear tires are at end of life so I will need to get another pair soon.
> Fronts are 1 new and 1 mostly new so those are good. The idler pulley is
> making rude noises so I ordered 2 new ones to have a spare, will get that
> replaced when they get here. My daughter had one let go on their Christmas
> trip, left them dead but managed to get a new one and tools to replace it and
> the belt that was completely shredded. Don't want that to happen (I had that
> happen on the ML500, luckily I was just up the road when it let go and made
> it home OK).
>
> Anyway, fun times Benzing on the Vast Estate. One FAIL and one SUCCESS
>
> --
> --FT
> ___
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