canyonclassics

Hello,

My 2005 CL65 has had nearly all of the suspension components including all 4 struts, abc pump, reservoir, accumulators, and multiple lines have been replaced. I personally replaced the drivers rear which was the last original strut on the car in hopes that would correct the left side lean, the car was rodeo bled twice and no change occurred. The lean is noticeable to me with the front left sitting down the lowest. Which then causes the whole side to drop. My question is if anybody else has had issues like this and where to look next. Thanks

OCKlasse

This is due to the manifold valve block, which sounds like the front one in front of the driver's wheel well (there is also another manifold in the rear in front of the driver wheel well). The seals within the valve begin to allow fluid to pass, therefore causing that particular corner to lower.

canyonclassics

Its not a gradual drop over time...it is constant even after the car is raised fully and dropped it is a constant difference in ride height between left side of the car and right. The stealership is at a loss on where to go next, they tried to sell me accumulators but luckily I have the VMI on the car and say that they have been done already. They tried to tell me it isnt a matter of the left side being too low but the right side being too high. I took it there because the previous owner had a bunch of work done in January of this year and I was hoping whatever the issue it would be under warranty. Are those valve blocks expensive and hard to change out?

awiner

Sounds like you need someone with a Star DAs/Xentry workshop system to preform a left/right and rear height adjustment.

canyonclassics

Awiner

Shouldn't the dealer be able to get in there and adjust it?

radride

Yes. They should be checking the final level after the rodeo. I watched them do mine and they always verify the level/heights of the car making sure its level.

R.K.

OCKlasse

Sounds like an issue with the height sensor...either from the reading end or the sensor itself...

Awiner is always winner winner chicken dinner with this kinda stuff...

driveability

I agree with OCKlasse;5239488

If the car is leaning over to one side, lets look at it this way. if a level sensor is skewed wouldn't that cause this issue as well. One should be able to read the voltage values being sent back to the ABC computer or just the difference in resistance between the two front sensors. An input value which is skewed would cause the car to lean over. I guess it could be on the receiving end at the ABC computer itself as well. I understand the valve block can bleed back and cause the car to lean over after shut down and snap back once the car is started again. I don't here that happening here.

freestylebiker3

could be the height sensor issue, maybe you can switch them from left to right and see if the lean changes to the other side

alx

Have the car read with das and 4- corner ride height calibrated. If all shocks were replaced the previous owner might have compensated for a bad shock by lifting the car on that corner via das. Now when all are good the lifted side sits higher and is lowering the other sides.

Reading the car will also show if you have bad height sensors (vary rare).

awiner

Yes. I would have thought they would have verified this especially since so many items were replaced. But..... You never know what they do to save time and a dime.

Looking at the voltages the sensors are outputting will tell if there is a problem with the sensor.

My guess is that a leveling procedure needs to be carried out via DAS.

canyonclassics

Dealer says there are no ABC codes so they can't go any further. The shop foreman suggests replacing all four accumulators even though two were just replaced in the last year...it seems like if there isn't a code or you don't have a bottomless checkbook the dealer can't figure anything out...what a joke... Know if any independents in Phoenix area have DAS scanner and might have a clue what's going on? Is swapping the sensors an easy job? Where are they located? One at each wheel?

awiner

Lazy dealer. Surprises me they aren't trying to make money but at least doing some automotive detective work, but then again, ABC may scare them

OR

They are hoping you will buy their BS story and replace all accumulators which IS NOT causing your issue.

I don't think there are four accumulators.... Are there ???

canyonclassics

Not really sure but I know that is not the problem...I will pull the car on Monday and try to figure it out...it also has an intermittent SRS warning which has flashed a few times with a passenger in car, but that isn't storing any fault codes either, so they are no help there either...what a waste of time a MB dealer is!

OCKlasse

Yes, I believe so. If I recall correctly, there should be one per corner, and then one for the pressure relief valve. I might be missing a return accumulator somewhere.

Regardless, that is not his problem.

canyonclassics

How many ride height sensors are there...would it be relatively easy to swap them one side to the other to see if the lean switches sides?

awiner

1x Front Right
1x Front Left
1x Rear

canyonclassics

Are front left and right interchangeable?

OCKlasse

I think we have four sensors, no? At least my car does.

OCKlasse

Just checked, and I found four:

-Front axle pressure reservoir
-Rear axle pressure reservoir
-Return flow pressure reservoir
-Pulsation damper (accumulator attached)

drjsilver

There is one ride height sensor at each corner. I placed lowering links in my car and there is one at each wheel for an ABC car. J

559cl55amg

op check this out... I'm also having issues with the abc system my car is currently at the shop. I came across this looking around.

http://bayhas.com/mercedes/cl215/con...bc_comploc.htm