hi all

I have a 2002 allroad 2.7T. the Air Suspensions, i don't know which side, recently have some issues.

I normally put it at level 2. but it always try to pump air when i park. sometimes, when pump works fine, the car will be back at level2. but sometimes, it will errors out. i will have to re-start the car to clean it out.

i was wondering if i can just leave it at level1. it seems ok for me.

any recommendations will be appreciated!

thanks in advance,

Frank

 

ive heard that when you have to reset it to get it to level out again that one of the airbags is going out, but i'm not sure on that. if your car loses height at all when its parked then you have a leaky airbag. if you need new ones get them from Arnott

 

Put it in jack mode over night. If it sags to a corner or to the front then you can isolate the prob to a bag or more than one bag.

I actually have two rear bags for sale but those don't leak as often. If it stays up over night but Seems to be fighting a losing battle to stay up over the long haul this is usually a worn out pump. There is a good overhaul procedure called "beer canning"

There is also a valve body and an "brain" but these seem to fail less than the air bags and the pump.

I just had to do a pump overhaul but before I did I noticed that my system seemed to give up air as part of the natural readjustments of leveling out from loaded to unloaded with passengers and cargo. And because I had no pressure coming from the pump I would sink more and more.

Unfortunately... You wont be able to hold at 1. Before long it will be flashing at you and unable to hold that either. If it is a bag you may still be able to save your pump by acting quickly.

 

Hi All, I just got an 05 AllRoad and I am am experiencing suspesion problems too. I knew this ahead of time so I worked out the price with the seller to fix it. Now it is fix it time but what I suspected was leaky front bags might be something else like the compressor. This is what happened, when we test drove the car I immediately set the suspension to 4 and wanted to see if it holds the whole time we were there. What I observed was that the car started lifting from the rear and then much later the front. By the time it had to get to position 4 it almost got there but it did not and the 4th position light became amber with a service mesage in the dash. We kept the car in 3 but much later it went to 2 on its own and much later to 1. I have kept it on 1 and all corners seems to be level and where they should be. Is this a bad compressor? Thank you in advance.

 

I don't have a link to it handy. But look at the Beer Can mod for your pump.

It is one of the easier repairs you will ever do on your allroad. Drop the pump, disassemble a few pieces, shim behind the rubber ring on the piston with aluminum can, thus the beer can, then reattach to your car.

That is the Reader's digest version, there are whole long threads on it.

If that description makes you queasy then find a shop that will put in a pump for you and don't let them charge you 600.00 for the pump.

Shop hours should be less than 2 hours and pump should run you around 400.00. They can buy it from Arnott for 290.00 (the mercedes version of the pump) but they all mark up parts....just make sure they aren't trying to charge you based on the fact that the dealer will charge you 900.00 and "oh my, I'm giving you such a deal by only charging you 600.00"

You could also buy the Mercedes pump from Arnott with the discount code...thus the 290.00. There are tags on how to mod it to the allroad using the existing parts from your bum pump.

But, honestly...it isn't much harder just to do the beer can mod on your existing pump and I did mine a couple months ago and it is a dramatic improvement.

Up to you there are your options.

But as for your symptoms....they sound EXACTLY like mine. I could never get up to 4...and then it got worse ...and worse...and worse...until I was lucky if I got it to 1! I knew it was not likely to be a leak because I had new fronts and the backs are usually not the problem.

Fixing up my pump took a little time, but it was FREE! And it worked!

 

Thanks for pointing me in the right direction to correct this problem. I don't think I have a leak now because I have left the car in 3 for to days and it has stayed. I will look into repairing my pump and best of all I get to tell my wife that in order to fix our problem I need to start by drinking beer. lol... Thank you.

 

I have a 2000 Allroad and had a lot of suspension levelling problems. After a lot of troubleshooting over a long period it was traced to a wire in the loom with damaged insulation from rubbing. In the meantime I had had various levelling units replaced at great expense as well as supposedly leaking bags. Currently I have a constant suspension warning although the system is working perfectly. I think this is linked to a headlight levelling failure which I cannot afford to have fixed.

 

2001 Allroad, heard hissing fron front right suspension unit - 2 year old arnott replacement about 3 weeks after having the front right replaced _again 2 year old arnott unit. Car flat at both ends on the front one morning. No movement in the front at all. Had a replacement pump installed but still nothing at the front end - no hiss no movement. Jacked up the front ends slighty to see if they would move front left does but front right wheel suspension frozen in place. Any thoughts?

 

I have a 2003 allroad, 2.7. I have read through the forums but haven't found an answer yet.
Symptoms are: I can pump up to level 4, jack lock the suspension, and position 4 will hold for days. But sometimes I can not even get out of error mode with suspension all the way down on all fours. When I start the car or just turn on the ignition, the pump will start, suspension gets to position 2, then sometimes I can hear a "thump" in the back and the air just bleeds out of the suspension at all four corners.
I have "beer-canned" my pump but no change. Before this, the pump would get to position 4, but I beer-canned it anyway(simple task by the way).
Questions to those that know:
1. Is there some master valve in the pump assy that if it malfunctions would dump all four corners?
2. Is there a master valve in the valve block that would do the same?

If I'm lucky and get to position 2, about 10-15 miles down the road the air dumps again and I become a low-rider. It is very erratic.

Valve block? Computer? Pump?
Any help before I tear the air system out and put in a fixed suspension would be greatly appreciated.

Thanks to all.

 

I would recommend a fault code scan, the N111 valve releases air but it works in conjunction with the valve block, are you sure it is not an air bag Leak? the car tries always to keep all 4 corners level so if you have a leak at one corner (or 2) the other corners will lower to match. jacking mode dissables the system. park at level 1 and put it into jack mode, if only one, (or 2) corners sinks you have a leaking airbag, they do not leak at level 4 due to the way the bag folds, check this 1st at level 1 as it is easiest to diagnose with no fault codes

If a leak it is large hence it struggles to lift to level 1 and 2 after that the leak(hole) closes and it will keep air ok.

let us know what it does at level 1 in jack mode,


regards

Andy