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Old 25th February 2020, 12:23 PM
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Architex_mA8tey Architex_mA8tey is offline
Join Date: Jan 2009
Location: London/Oxford/Swindon
Posts: 7,643

Originally Posted by funkmiester View Post
The door module was a red herring. It was not working but not the cause of the car's insomnia/batter drain.The car returned just after new year, not fixed but problem identified as the diagnostic module 4Ho907468F. I have been running the car with this module disabled by pulling the fuse and the car has been fine. I have located a second hand one and it will be fitted when I get the chance. All that work and it turns out to be the diagnostic module not allowing the car to sleep. Time will tell whether the replacement is a full fix. Thought I'd keep this updated as there is nothing anywhere on the internet about a faulty diagnostic module or this type of battery drain.
Thanks that's very useful to know - not heard about that particular issue anywhere yet but a lot of this type of issue will no doubt come out of the woodwork over coming years!

Confidence is the feeling you have before you know better . . . .
Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange
20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble
Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior
Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble
Audi A8L D3 4.2 Petrol with LPG - Oyster Grey
Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black
Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior
and some other A8's A8L's and Mercs
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