CLS 500 airmatic visit workshop problem
- Thread starter dancki
- Start date
would it be possible that the level sensor failed? it's weird that when removed and popped the relay it all went up a bit, reading on different forums that likes of s600 or e500 had the back right low and all it was, was the relay
- Joined
- Nov 1, 2008
- Messages
- 20,403
- Location
- Bournemouth/Poole Dorset
- Car
- W210 E280 x2, w211 E55, W212 E63 biturbo, S204 C180K W213 E63s
^ The level sensor is a possibility. It can be seen right abpove the rear diff and its a pig to get at. Take a look and see if the sensor rod has snapped or been displaced.
If the front raised after reseating the relay it points to the pump being operative after all.
If the front raised after reseating the relay it points to the pump being operative after all.
AMGeed - thats the thing, it surprised me that the compressor raised the vehicle to level that i could drive. i will try tomorrow to check the sensor. I hope this is the case and will only need to get the sensor sorted not the shocks or compressor. Now i have another question, would the failing sensor progress within a week or 2 and broke and cause the whole issue.
- Joined
- Nov 1, 2008
- Messages
- 20,403
- Location
- Bournemouth/Poole Dorset
- Car
- W210 E280 x2, w211 E55, W212 E63 biturbo, S204 C180K W213 E63s
I don't think the sensor would fail over a period of time. Either it works or it doesn't.
I'd run it over to Terry at Wayne Gates in Harrow and get it checked over before dong anything else.
He would be my "go to" to do the job anyway if I lived in London.
Wayne Gates Specializing in Mercedes Benz
I'd run it over to Terry at Wayne Gates in Harrow and get it checked over before dong anything else.
He would be my "go to" to do the job anyway if I lived in London.
Wayne Gates Specializing in Mercedes Benz
tank you for the garage recommendation, unfortunately it's on opposite side of London for me, i live Kent way. I tried to check the level sensor but couldn't jack up high enough with what i have available. Tomorrow trip to garage. BUT i have decided to help my car to raise, so jacked up the rear and started the engine, now it's at proper height. Also discovered in rear right air spring a cut in the outside housing, i bet this will need replacing.
Update,
After jacking up the car and letting compressor filling it with the air, the car still holds the height after 12hours and a trip to super market for weekly shopping (just in case it pack up) This is getting on my nerves, is it possible the compressor need replacing as current one not strong enough to pump up the air bags?
After jacking up the car and letting compressor filling it with the air, the car still holds the height after 12hours and a trip to super market for weekly shopping (just in case it pack up) This is getting on my nerves, is it possible the compressor need replacing as current one not strong enough to pump up the air bags?
MWCLS
MB Enthusiast
Sorry I can't advise I'm having Airmatic visit workshop too in grey ! There are lots of things to check. I'm learning fast.. I had a Airmatic CLS for 4 years never once through a error on anything but the convenience battery.. luck of the draw I guess.
been in the garage today, the computer said that the valve that does release air from the suspension is not closing - meaning flat suspension and need to be pumping all the time.
MWCLS
MB Enthusiast
Not a block valve, the compressor is pumping air to the struts, when there is too much air inside the struts, selenoid valve is activated and lets the air out. This is what is always open in mine hence the compressor is over working it self as the sensors picking up that there is not enough air in my suspension. The postman is on it's way with the compressor pump today sowill update later on.
MWCLS
MB Enthusiast
Mine as been diagnosed compressor pump. Indi is fitting and setting up via star.
No warnings like the pump was going to fail.. fuse and relay fine.
No warnings like the pump was going to fail.. fuse and relay fine.
so the job is now done, Replaced the compressor which i should not have to replace, he fault was in the electrical connection to the selenoid, this would explain why did it work randomly, nothing wrong with the air suspension, struts, shocks.
Just pay attention and check all the wiring as it's second time this was the case on my car.
Just pay attention and check all the wiring as it's second time this was the case on my car.
TheEnd
Member
Nice that you have the problem sorted.
i've had the message once about a week ago, no sign of any drops, and then twice last night, so I have a new compressor on order.
Star/Airmatic isn't that great at self diagnosis. i've seen a broken level sensor arm give "rising time too long" codes, but it wouldn't even direct you to which airspring was the culprit, despite one corner being sky high, since it kept pumping air into one corner to lift it, which it couldn't see since the sensor arm had snapped
i've had the message once about a week ago, no sign of any drops, and then twice last night, so I have a new compressor on order.
Star/Airmatic isn't that great at self diagnosis. i've seen a broken level sensor arm give "rising time too long" codes, but it wouldn't even direct you to which airspring was the culprit, despite one corner being sky high, since it kept pumping air into one corner to lift it, which it couldn't see since the sensor arm had snapped
I was not checked by star software, Delphi it was i think, t was showing the problem on the release valve, the software was getting disconnected every time we tried to level the car and couldn't clear the code. It appeared that the cable on the connector for the selenoid valve ( responsible for discharging unwanted air) was snapped. Once soldered and sealed, all reconnected we cold reset fault codes, level the car and roar on the street.
Again check all cables before you bother with compressor unless you 100% sure its the pump.
TheEnd
Member
Yea, your codes seem quite specific which isn't too bad. I'm getting a general running time too long code. I can hear the compressor, the ride height seems OK and level, I've been noting down ride heights for a while to see if anything pops up out of the ordinary.
It's a little too noisy where I am to listen for any hissing, but I will have the use of a ramp and garage next week.
I've got 145k on my W211, so a new compressor isn't going to be the end of the world. There's an Arnott on the way to me now.
I've also just seen MB edinburgh listing a few new MB compressors on ebay for a touch over £300 with the new relay thrown in.
Tracking down the right relay part number is the next bit, I can't seem to find what page it is listed on in the parts catalogue.
If anyone needs an online parts catalogue, you can view one here-
parts catalog Car mercedes CHASSIS EUROPA, original catalog Car mercedes CHASSIS EUROPA, online catalog Car mercedes CHASSIS EUROPA, Car catalog Car mercedes CHASSIS EUROPA
It's a little too noisy where I am to listen for any hissing, but I will have the use of a ramp and garage next week.
I've got 145k on my W211, so a new compressor isn't going to be the end of the world. There's an Arnott on the way to me now.
I've also just seen MB edinburgh listing a few new MB compressors on ebay for a touch over £300 with the new relay thrown in.
Tracking down the right relay part number is the next bit, I can't seem to find what page it is listed on in the parts catalogue.
If anyone needs an online parts catalogue, you can view one here-
parts catalog Car mercedes CHASSIS EUROPA, original catalog Car mercedes CHASSIS EUROPA, online catalog Car mercedes CHASSIS EUROPA, Car catalog Car mercedes CHASSIS EUROPA
My compressor was running constantly as well, reason - release valve was always open...
