2005 A6 Air suspension leaks overnight

Reply Subscribe

Thread Tools

Search this Thread

Feb 16, 2024 | 06:26 AM

unbuffxd

Thread Starter

AudiWorld Newcomer

Joined: Feb 2024

Posts: 1

Likes: 0

2005 A6 Air suspension leaks overnight

Hello there fellow Audi owners, I have an 2005 A6 with air suspension as mentioned in the title and over night it leaks and the whole car drops down. It started with only the front leaking and dropping down but then I noticed one day that the whole car is down. I put the car into the shop and they couldnt find the leak at all. They tried to listen to it , spray soapy water anywhere they could checked everywhere and then even measured the cars height every hour and they said it takes 6 hours after the engine is turned off for it to start leaking and start going down. The only thing changed so far is the valve block because that made the only sense to me since the whole car goes down. They checked and made sure the car isnt leaking all the time , but ive driven it so many times since then the compressor would either turn off or just die from overheating. When i start the car sometimes it just goes up , sometimes i have to turn it off and on apparently theres a safety in the compressor. Ive tried leaving the car in lift mode and turning on jacking mode then leaving the car and it did the exact same thing, just evenly dropped down as a whole no corner higher than the other.

Feb 16, 2024 | 09:12 AM

jonzie77

AudiWorld Member

Joined: Jul 2016

Posts: 575

Likes: 101

From: CT

I don't claim to know about the air suspension in particular but it sounds like the air charge may be getting past a check valve either on the compressor itself or at least in the line coming out of the compressor. If the "leak" wasn't found at a fitting I propose that it is getting through the check valve and, basically, coming out the intake of the compressor.