- #113 of 177
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Re: compressor still runs [outy]
by Dondanger
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Jun 22, 2009 (8:34 am)
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Replying to: outy (Jun 22, 2009 6:18 am)
Could be the control unit in the boot. My back drivers side dropped and I was just about to replace the bag when I took it to Audi to check, they said it was the control unit (£650) and once they had changed that then it could be the bag, the compressor or both. At this point I decided to bite the bullet and buy the Arnott coil and spring conversion kit - as I love the allroad and want to keep her without having persistent suspension problems looming. Even with this kit it will be significantly higher than the A6 and high enough to get through snow and bad roads, fierce road humps etc. It's just been ordered so I'll let y'all know how it goes!
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- #114 of 177
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control unit in the boot?
by outy
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Jun 22, 2009 (8:58 am)
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where is the control unit and what does it look like? it does seem that there is some sort of malfunction as opposed to a real leak.
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- #115 of 177
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Location of Suspension Control Unit
by manster
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Jun 28, 2009 (1:32 pm)
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I'd like to know where the electronic control unit for an 2001Allroad Automatic trans is located. Mine does not seem to be functioning. Any other thoughts as to the cause of the malfunction would also be appreciated.
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- #116 of 177
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Re: Location of Suspension Control Unit [manster]
by dlaustin
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Jun 28, 2009 (2:50 pm)
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Replying to: manster (Jun 28, 2009 1:32 pm)
It's located in the left rear fender and can be seen by looking up from under the car behind the left rear wheel. Also, I believe you can see it from the trunk if you remove cover for the toolbox and the GPS unit. Without reviewing the manual, I don't know the best way to access the assembly inasmuch as I have never had a problem with mine.
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- #117 of 177
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Re: Location of Suspension Control Unit [dlaustin]
by manster
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Jun 28, 2009 (5:44 pm)
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Replying to: dlaustin (Jun 28, 2009 2:50 pm)
Got it, immediately behind the inner fender. Am I correct to assume that the aluminum tank below the tool box/GPS is an expansion tank for the air suspension system?
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- #118 of 177
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Re: Audi Allroad Air Suspension [mmasner]
by kambei
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Jun 29, 2009 (6:26 am)
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Replying to: mmasner (May 20, 2009 8:06 am)
I've had to replace both front air bladders twice on my 2002 Allroad (103,000 miles), and also replaced the compressor. Consequently, I'm very interested in anyone's experience with the coil spring conversion kit: How does the car handle and ride? Thanks.
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- #119 of 177
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Re: Location of Suspension Control Unit [manster]
by augustom
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Jun 29, 2009 (8:30 am)
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Replying to: manster (Jun 28, 2009 5:44 pm)
Yes, The aluminum tank is an expansion tank for the compressed air, so the compressor does not have to turn on all the time for minor adjustments. Besides the eletronic control unit you also have an air distribution switch (which the eletronic unit controls) which is the switch responsible to deliver air to each individual bag. This unit is placed under the car next to the compressor. One air hose comes from the expansion tank to this unit and four hoses leave the unit to each individual bag. A leak (although rare) on any of these hoses could be a problem, worth checking specially if you use car washes that spray the bottom of the car.
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- #120 of 177
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Re: Audi Allroad Air Suspension [kambei]
by manster
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Jun 29, 2009 (8:35 am)
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Replying to: kambei (Jun 29, 2009 6:26 am)
I have an '01 with 106k on it. Bags and compressor have been fine. However, the control module failed and must be replaced as the suspension cannot be locked for lifting the car without a functioning controller. If the car is lifted, the air come out of the suspension.
As to the Arnott coil conversion, the local shop that services my car installed a set recently for another customer. They reported that the installation went smoothly, the car sat level at about level 2 and that the ride was fine. No report on handling. The one problem they did report was associated eliminating the air suspension system which caused the suspension warning light to come on and an alarm to sound each time the car is operated. Arnott' instructions for disabling the indicator light and alarm caused the check engine light comes on. In some states, Rhode Island is one, a car cannot pass a safety inspection if the check engine light is on. The only alternative is to live with the suspension system warning light and alarm. So, one warning light or another will be on.
When my air spring assemblies fail, I may replace the OEM parts with Arnott's air system parts which carry a lifetime warranty.
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- #121 of 177
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Re: Location of Suspension Control Unit [augustom]
by manster
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Jun 29, 2009 (8:45 am)
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Replying to: augustom (Jun 29, 2009 8:30 am)
thanks, the air suspension system and compressor seemed to have been working fine until the control module failed, i.e., warning light came on and vehicle level would not move from level 1. After about a month of driving the control module malfunctioning we needed to lift the car to replace tires. The suspension would not lock and the bladders lost air while the car was off the ground. I'm now concerned that the bladders were damaged driving the car to the repair shop. We'll find out when the car come out of the shop.
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- #122 of 177
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Audi Allroad Suspension control module
by shawn39
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Jul 08, 2009 (3:37 pm)
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I have a 2001 allroad. Suspension warnign light went on. I'm not loosing air at all and the car is staying at it's height for a few days now since the light has come on. Problem is that I can't adjust the height now. Is this a warning light for the conreol module. Anyone one know where to get parts, the cost and how technical it is to fix?
Thanks
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