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Hello everyone, i have purchased an Audi a6 allroad 2.5, i got the car very cheap but as you would expect it has its problems, i have worked my way through quite a few of these but i seem to have hit a wall on the information side. The problem i am facing is the air suspension, the pump will not turn at all, i have removed the pump and just as the man said from whom i bought it from, the pump has been overhauled, i have proved the pump with a direct feed, it works fine with plenty of compression, however when i connect it back to the cars electrics i get nothing, i have bought a new relay as i have been told that this is more than likely the culprit, now here is the part where i have hit the wall, i can't find a single photo of the location of this relay, i was hoping that someone has a photo showing where it goes, then i can eliminate the relay and move on to the next suspect, hope someone can help, thank you for reading my post 

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3 hours ago, Steve Q said:

Has the system been checked for leaks? Both the bags and pipes can leak. 

I can't test it because it wont pump it up past the control box mate, i was wondering if i could use my garage compressor to test for leaks to each unit from the control block

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5 hours ago, johnkarl said:

Thank you , will give it a go with my garage compressor and check for leaks

No probs. Sorry I can't help much. I know c5s but not allroad suspension unfortunately. Guessing you've tried the fuses when you tried the relay? 

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yes mate all fuses checked, just had my friend over with his ridiculous priced Snap-On diagnostic and it says that the suspension ECU has no communication, so i am assuming that this is the cause of the problem, looks a bit of a faf to get it out,  but we will see

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On 6/11/2021 at 1:32 PM, johnkarl said:

yes mate all fuses checked, just had my friend over with his ridiculous priced Snap-On diagnostic and it says that the suspension ECU has no communication, so i am assuming that this is the cause of the problem, looks a bit of a faf to get it out,  but we will see

Where is that ECU located? 

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On my A6 2001 allroad, the suspension module is located in the rear passenger side, if in the UK, forward from the multi cd player, you can just say see the side of it, looks a pig to get at

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8 hours ago, johnkarl said:

On my A6 2001 allroad, the suspension module is located in the rear passenger side, if in the UK, forward from the multi cd player, you can just say see the side of it, looks a pig to get at

I ask as I was going to say if it had been the driverside or on the bulkhead then it could have got damaged by getting wet from blocked drains on battery tray. Or the washer pipe coming free on the driverside. But as it's passenger side that blows my theory. Might be worth trying to source a second hand unit. I believe you'll need one with the same part number I suspect. 

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