Mercedes w220 - Airmatic does not leave no errors, it is impossible to calibrate

Question

Hello W220.175 s500 rear axle stands like a goat and the front as it should be, cannot be calibrated because it shows that leveling sensors are out of range. According to SD they should be between 2.0-3.0v. I have: left front 1.48v. right front 3.41v (although both wheels are at the same level...

fructon · Answer

If it doesn't respond to commands from sd, take a look if there is no greenery in the airmatic controller.

viper1989 · Answer

clean on pins, plug also.

fructon · Answer

It is possible that something is wrong with the valve assembly above the compressor, since you can hear their work during control from sd, you can check if they physically release pressure from the system.

viper1989 · Answer

I think so too, but I haven't picked up there yet, I see it is next to the wheel, so maybe it's drunk or muddy. Above me, demolition of the bumper, etc. When giving the command for each wheel lowering, you can hear the scuffing but nothing more happens ... once I managed to do calibration by throwing 200kg of weight into the boot with level sensors obtained values between 2-3v but of course it was calibrated to wrong parameters and not quite it was also satisfying but no longer stood like a goat. In total, I risked damage to the bellows ...

mario 77 · Answer

Any mistakes thrown out? It is possible that the rear wheel valves in the valve block on the compressor are not tight and still holds pressure on the rear shock absorbers but

viper1989 wrote:
it was calibrated on the wrong parameters and it wasn't quite satisfying but it didn't stand like a "goat"

It did not stand like a "goat" because you loaded the trunk or changed after this calibration (no load already)

viper1989 wrote:
Above me, bumper dismantling, etc.

Just remove the wheel arch.

viper1989 · Answer

changed, he sat down enough and as normal it looked, but I began to test the compressor and valves and later I raised it again with the risk that it would not go down and, however, did not go down. Earlier I did the valve assembly in Gls 450 and the symptoms were different, it did not get up at all and it came through the wheel arch. No errors, the only one for now is that the calibration failed.
As far as the valve assembly can be cleaned, do you need a second one?

viper1989 · Answer

I got to the slat and it looks more or less like that.
It seems to me that something could fall asleep and does not let out a breath. Today I have raised my front and he has not left too. What do you think? errors still only from calibration.

daw2 · Answer

The lath fell down. Once I was given this, I was converting a strip into individual valves. It's always easier and cheaper to change one wheel instead of a set.

andrzej20001 · Answer

If the valve clicks and the bellows does not leave, the conclusion logically comes to itself

daw2 · Answer

These valves just get blurred so they don't even click

viper1989 · Answer

Do you have any photo or patent for converting these valves to single ones? normally for some 6 tecalans? greetings

viper1989 · Answer

edit:
Gentlemen, I replaced the valve strip for a second and it is the same raises the suspension but does not respond to lowering at all, in the strip ticks and does not go down ...
Could he sell me a babola for PLN 450?

mario 77 · Answer

You wrote that when you give commands you can hear the valves but it doesn't leave. Is the same with the front? If it does not leave either the back or the front then the problem may be the pressure relief valve in the compressor. You can still try to unscrew the pipe from the valve block (the one that is not in line with the rest of the pipes) and try to lower. Generally, if it stands too high, it should be a height sensor, a bleed valve or a valve bar.

viper1989 · Answer

I found something like this, before there was such an error before cleaning up the driver errors. I bet on 99% that it is a bleed valve in the compressor. It cleans up, exchanges? there is some repair kit in the link but in Mercedes is not available ...

mario 77 · Answer

There is nothing to bet, you just have to check. The basic thing is whether the valve works. You can give him power and control the ground and you will hear if he walks. You can also unscrew the cable I wrote to you above. The reason can also be a bundle or pins in the plug. It should then crash reliefe valve or release valve error, but check it anyway.

viper1989 · Answer

welcome back
the valve removed looks as it looks but works. The spring solenoid hides nicely every time. Do you know what the tension should be in the tie that leads to it? for me when the engine is on it shows nothing or the jumps are on 9.0v
bundle or kaput module?

viper1989 · Answer

any suggestions?

nicram1941 · Answer

If you have a part number, you can check on the net how much volt I need (in 24v trucks and around 0.2A), I bet it must be 12V and around 0.4A. Check the harness with the bulb and output directly from the controller. I always leave the driver at the end ...

viper1989 · Answer

Gentlemen ...
I replaced the valve strip, module also.
but all this was not needed.
Valve functional for a short time, works, I put on a clogged compressor inside. Everything makes no sense.
The one who wrote that the strip would save shame ... Only the biggest cost went through it.
I did the test in SD and the valve did not respond.
according to the diagram, the connection with airmatic to the valve is pins 14 and 44.
checked the passage with a multimeter, it was at times.
I corrected the bundle in individual breaks and the matter was resolved. The car got zero errors.
Best regards and thank you

[Solved] Mercedes w220 - Airmatic does not leave no errors, it is impossible to calibrate

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