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D2 - Everything else Anything that doesnt fit elsewhere |
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Thread Tools | Display Modes |
#1
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3.7 40V starts, then stops.
Dear A8 gurus,
I have a 2000 3.7 V8 40 valve, which will crank, start, and then stops. Coupled with this, the instrument cluster does not light up, and none of the gauges work. Does anyone have any ideas? The car has covered 80K miles, had a new battery (Bosch) in May '10, as the car only gets used occasionally, I wanted to "make sure" it would always start!! Best Regards, and many Thanks. Steve |
#2
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Steve,
Welcome to the forum. Sounds like an immobiliser issue to me. I'm not an expert on the FL D2 immobiliser, but the instrument, ECU and keys are all matched and you have classic immobilisor symptoms there. Someone will be along shortly.
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Conan (the Librarian) Watch it if you dare Currently, 2000 S8, Merlin Purple, Leather Pack 1, Winter Pack 1, SPAX adjustable suspension, AP Racing 6 pot front caliper, 385mm fully floating disks, EBC Yellow Stuff Pads, Black Diamond grooved rear disks and predetor pads, D2 Doctors Brake Block. 1997 4.2 A8SQ - the Projekt. 12 years and ongoing! 1997 4.2 A8SQ - Ming Blue. Restoration sat waiting; saved from the Scrapyard 2003 C5 Allroad 4.2Q - Cobolt Blue. Towing car. Laid up awaiting manual conversion. 2005 C5 Allroad 2.5TDi FE - Grey - Workhorse. 2015 Q3QS SLine - Daytona Grey. Lots of extras! Long Haired Admirals cutter. Previously 2003 C5 A6 1.9TDI FWD - Loaner from D2 Doctor Lifex 1997 S8 - Ming Blue. Loaned out and written off. I loved that car. My first engine swap after cambelt failure. 1996 4.2 A8SQ - Ming Blue. 178k on a cambelt! Trader's 8. Delivered to A8Parts at Lifex. 2003 2.8 A8SQ - powder blueish. Fill in for a while. Sold on. 1998 1.8T A4 Avant FWD. Ming Blue (there's a theme here), PEX for the 97 S8. And a list of non VAG going back 40 years before I saw the light. |
#3
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Try moving the steering column in or out by a bit and see if it makes a difference.
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2010 Jag XF 3.0D Portfolio S I know.. I know.. |
#4
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Immobiliser is built into the instrument panel which apparently is not working correctly so engine cuts out. Check the fuses and connections( short/open) to the instrument cluster. Disconnect battery for a while ( at least 15 min I would say) and see if that makes a difference after reconnecting. If the instrument cluster has gone bad You will need to replace it and have the immobiliser recoded which only few places can do apart from dealers. If You get a second hand instrument cluster with original key You can use Your key blade on that key and will only need to pair ECU with immo which is pretty simple and DIY if You have diagnostics cable.
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#5
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Have you got a spare key you can try?
My spare key will unlock the cars, and start the engine but won't disable the immobiliser - so it starts and runs for a second then dies. I have no idea why it does this, but it could be you key that is at fault. EDIT: just to add to that, my other key works fine. I need to get this sorted, will probably start by checking the key batteries (although they are new and it unlocks the car remotely OK) and then have a look at removing some of the steering column.
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'02 S8 - Ebony Black Pearl, 'Swing' Grey Leather/Alcantara, PDC, Xenon Plus, Bose, Phone Prep, Navigation Plus, TV, auto dipping interior and exterior mirrors, UV/Solar Tint Glass, Ski Hatch, Extended leather pack 1, Rear Sun Blinds, Memory Driver & Passenger Seat, Heated Front Screen, Heated Rear Seats. Last edited by Mr K; 18th December 2010 at 11:12 AM. |
#6
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Mr K
Battery in the key is for remote only. Transponder for immo works without battery. It gets power wireless from sender/receiver unit in the car. Your other key does not work because it is either not coded into immo, is faulty or have a weaker signal and poor connection causing weaker signal not being read properly. |
#7
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Quote:
Thanks for the advice, i will have a play when the weather warms up. Any ideas where to start trying to fix it? Im guessing the immobiliser / cluster should be the first point of call? where is the transmitter/receiver, is that in the column? Many thanks.
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'02 S8 - Ebony Black Pearl, 'Swing' Grey Leather/Alcantara, PDC, Xenon Plus, Bose, Phone Prep, Navigation Plus, TV, auto dipping interior and exterior mirrors, UV/Solar Tint Glass, Ski Hatch, Extended leather pack 1, Rear Sun Blinds, Memory Driver & Passenger Seat, Heated Front Screen, Heated Rear Seats. |
#8
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I would start by getting fault codes and this thread http://www.audipages.com/Tech_Articl...rereplace.html
But in Trophy885's case problem most likely is in the instrument cluster |
#9
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Thanks for that! I assume the problem effects FL too? As i said, I will wait for the weather to warm up before I do it, my other key words fine and hasn't let me down yet.
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'02 S8 - Ebony Black Pearl, 'Swing' Grey Leather/Alcantara, PDC, Xenon Plus, Bose, Phone Prep, Navigation Plus, TV, auto dipping interior and exterior mirrors, UV/Solar Tint Glass, Ski Hatch, Extended leather pack 1, Rear Sun Blinds, Memory Driver & Passenger Seat, Heated Front Screen, Heated Rear Seats. |
#10
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Gentlefolk,
many thanks for your thoughts and advice! As soon as the white stuff lifts from the highways, I'll disconnect the battery, I have sort of tried this, (disconnect, charge, reconnect, and normally the beast normally runs) Can anyone tell me how common the instrument cluster failing is? Many thanks again guys. Best Regards, Steve |
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