S-Class (W220) 1999-2006: S 320 CDI, S 320, S430, S 500, S 600

AIRMATIC, nothing like before!

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Old 04-24-2011, 12:55 PM
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W220 320CDI (RHD); X-Type 2.5 V6 (RHD);
AIRMATIC, nothing like before!

I am new on this page and so firstly i need to say greetings to Merc enthusiasts! I really, really need ur help, as I am going to lost my hope very soon.

I bought my w220 2 weeks ago and after 4 days it went down (all wheels).
right now it is so low i cant even drive it ...

i replaced pump, relay, fuses, checked struts...i was looking for any leaks - there is none. computer error-C1517 (critical vehicle level at front axle). the pump doesnt work at all on its own (i opened the old relay's plastic cover and made the pump working by pushing the relay's blades together) ...but the car doesnt rise at all.

how long it takes to rise the car (as the reservoir is empty)?
what are the chances that it is the Airmatic computer unit?
any other ideas? i would be grateful for any!

cheers!
Old 04-24-2011, 02:49 PM
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96 and 08 911 turbos
how are you sure there are no strut leaks?
Old 04-24-2011, 05:54 PM
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W220 320CDI (RHD); X-Type 2.5 V6 (RHD);
...well, i used a light soap solution to spray the components and checked for any bubbles...and there was none.

The problem is that the pump doesnt work/start on its own (i can force it to work by touching the relay's blades with my fingers, but the car is not rising).

Its like there was no signal/command sent by the computer to pump to start, is that possible?

i am going to take it to garage on Tuesday anyways (as it is bank holiday tomorrow)... although wouldnt mind trying on my own tomorrow ;/

cheers for your reply!

Last edited by Pete23; 04-24-2011 at 06:01 PM.
Old 04-24-2011, 07:57 PM
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06 Carrera4
Struts can leak on the bottom, not just top.
Old 04-24-2011, 09:55 PM
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Mercedes
his pump is not turning on.
Old 04-25-2011, 05:54 AM
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W220 320CDI (RHD); X-Type 2.5 V6 (RHD);
YES! thats my point!
theres no leak as theres no air being sent to rise the car

thanks!

Last edited by Pete23; 04-25-2011 at 06:06 AM.
Old 04-25-2011, 10:47 AM
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96 and 08 911 turbos
Originally Posted by Pete23
YES! thats my point!
theres no leak as theres no air being sent to rise the car

thanks!
hence you don't know if there is a leak.

So when you manually jumper the relay, the pump comes on but the car doesn't rise? is that correct?
Old 04-25-2011, 03:42 PM
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I would assume the pump needs to be turned on with the combination of the valves being open. The computer should be doing that.

I think the fuse for the relay is bad..
Old 04-25-2011, 04:25 PM
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W220 320CDI (RHD); X-Type 2.5 V6 (RHD);
Originally Posted by Oliverk
hence you don't know if there is a leak.

So when you manually jumper the relay, the pump comes on but the car doesn't rise? is that correct?

Exactly.
Old 04-25-2011, 04:29 PM
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W220 320CDI (RHD); X-Type 2.5 V6 (RHD);
Originally Posted by Oxygen
I would assume the pump needs to be turned on with the combination of the valves being open. The computer should be doing that.

I think the fuse for the relay is bad..
I checked the fuses, replaced the big 40A ones (just in case)...BUT to be honest, i didnt know there is one just for the relay...could you tell me which one is it?

cheers!

Last edited by Pete23; 04-25-2011 at 06:29 PM.
Old 05-01-2011, 10:59 AM
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S430
I'm having the same exact problem!!! did replacing the big 40a fuse work???
Old 05-01-2011, 12:59 PM
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W220 320CDI (RHD); X-Type 2.5 V6 (RHD);
NAE...garage is going to take it tomorrow (specialist, as i cant afford taking it to dealership rite nw)... i will let u know asap what is going on...
Old 05-07-2011, 01:50 PM
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W220 320CDI (RHD); X-Type 2.5 V6 (RHD);
jst to let u know - it was a sensor (rear one). they were able to rise it up using the diagnostic computer (previous guy from quick-fit said thats not possible).

its still in the garage...they quoted me about £500...so its not that bad good luck with urs!
Old 05-08-2011, 10:06 AM
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S430
Which sensor and do you kno where its located @???? They were able to rise it up using the diagnostic computer but the car doesn't work on its own just like minds!!!
Old 05-09-2011, 02:05 PM
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W220 320CDI (RHD); X-Type 2.5 V6 (RHD);
u got me worried :/
i hope mine wouldn't do the same thing... i still dont have my car bck as they are waiting for the part to be delivered... i was told (on the phone) that it is 'the rear sensor' and i need a new one fitted... ill let u know as soon as possible which one it is.
are u trying to do anything on your own?

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