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D4 - Axles, Brakes, Suspension and Steering Brakes, Springs, shocks, steering racks, steering columns, suspension arms, wheel hubs etc.

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Old 9th January 2020, 10:09 PM
Slabber Slabber is offline
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Location: Honiton, Devon
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Default Rear of car very low after 4 days of non-use

Hi All

For the second time I've noticed that after being sat in the garage and not used for about 4 days the rear of my (new to me) car is very low on both sides. After the first time VCDS reported 403200 - Function Shut-Off Active > C10C8 00 [008] in Level Control which I cleared. However having driven the car tonight and then rescanned that fault code hasn't returned.

I've Googled for that code and seen various threads where it appears with other fault codes but nothing that matches my situation. Any thoughts on possible causes? Thanks!

Cheers - Graham
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Old 10th January 2020, 12:00 PM
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steamship steamship is offline
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Not familiar with the D4, but would suspect the setup is very similar to the D3. With that being the case, I would initially rule out both rear air struts as being the problem (what are the chances of both developing a fault at the same time), and instead focus on the valve block as being the primary culprit. It could then either be a leak from the valve block or something internal. Spray on some soapy water, run the car and check for leaks. You could try spraying the struts as well, if it's easy to do.
2001 A8 D2 FL 3.7 Q - LPG Conversion, Engine: AKC, Gearbox:FBB, Colour:LY5X Aqua Blue pearl effect, Interior:WJ light beige/dark beige valcona leather with burr walnut inserts

My DIY jobs - Replaced alarm horn, Replaced Coolant Temp sensor, Updated RNS-D firmware, Installed Reversing Camera and Digital TV, Dashcam Installation, Retrofitted Rear Blinds, Auto-Dimming Rear View Mirror, Chrome Boot Struts

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Old 10th January 2020, 05:23 PM
Slabber Slabber is offline
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Join Date: Dec 2019
Location: Honiton, Devon
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Thanks for that! I'm glad to hear that checking for leaks is as easy as spraying on some soapy water . The car will be going in to my Audi Indie soon for a few other jobs so this will be on the list. Right now I'm hoping to get an idea of the possible culprits so I can check if they will be covered by the warranty that came with the car. And also to get an idea of how easy it might be to narrow things down. Cheers!
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