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Old 03-02-2007, 01:42 PM   #1 (permalink)
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Default multitronic light PRNDS flashing

Hello All, I have an A4 1.9TDI multitronic. I have noticed on two occassion (with months apart) that while driving along all the "PRNDS" flashes instead of just the "D", I noticed that when I stop and park then move the gear to P then back to D the problem disappers. Does anyone know what the problem is? Audi dealer says they can't find anything in the computer log. How do I know if the automatic transmission oil is low? I don't know if this is related but I also sometimes notice the car jerk when driving along at constant speed.
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Old 03-04-2007, 04:25 PM   #2 (permalink)
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Hi Mate,

This sounds like a problem with the control unit mounted within your gear box which controls the switch over from D to multitronic, if it is that it will be very costly as the gearbox has to be dropped. The control box is mounted inside the gear box as far as i know.

Whats the millage of the car?
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Old 03-05-2007, 06:50 AM   #3 (permalink)
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86000miles, note that the auto oil was changed at 57000 and also Audi has reprogrammed/updated the gear box software
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Old 03-05-2007, 07:45 AM   #4 (permalink)
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All digits of the display flashing merely indicate a fault.

To diagnose properly, rather than simply guess, you need to get the stored fault codes read!
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Old 03-05-2007, 08:11 AM   #5 (permalink)
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Sounds like the valve body. Only 2 things will make the PRNDS flash: defective Transmission Computer(F125)(most common) or defective valve body (rarely). If it's the Computer, a fault will be stored under 2/Trans electronics. If it's the valve body, no codes will be stored. Tell ur dealer to read MVP #65(measure values) under 2/trans electronics. It should read something other than 2 zeros(2 zeros indicate a good valve body.

You also indicate car jerks at a constant speed. Does it jerk while taking off? If it doe, definetely valve body.
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Old 03-05-2007, 12:08 PM   #6 (permalink)
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thank a lot. it only jerk at constant speed (>30mph) not on take off. how much () will it cost to repair? how long? If I don't fix it soon what happens?
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Old 03-05-2007, 12:30 PM   #7 (permalink)
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Quote:
Originally Posted by rdawodu
thank a lot. it only jerk at constant speed (>30mph) not on take off. how much () will it cost to repair? how long? If I don't fix it soon what happens?
Like I said in reply #4 - get the fault codes read, then we can give some definative answers, rather than just guessing.
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Old 03-19-2007, 01:36 PM   #8 (permalink)
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I had also jerking problems last winter, and they suspected the valve box (hydraulic control unit). The valve box is around 1700 euros and the whole work incl labor around 2500 euros (in Finland). So you get the idea of the price Luckily my problem disappeared and have not seen it since. Hope it stays that way
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Old 03-21-2007, 12:35 PM   #9 (permalink)
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Hi all, thanks for your help. I asked for the worse case price so that
I can save/plan for it and it will not be such a blow (surprise). Well I visited Audi today and they checked the fault code and said I have a faulty gear control unit, it will cost me 1400 (part + labour), they have order the parts to fit in 14days time. This car is beginning to cost a small fortune.
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Old 03-21-2007, 02:06 PM   #10 (permalink)
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Quote:
Originally Posted by rdawodu
Hi all, thanks for your help. I asked for the worse case price so that
I can save/plan for it and it will not be such a blow (surprise). Well I visited Audi today and they checked the fault code and said I have a faulty gear control unit, it will cost me 1400 (part + labour), they have order the parts to fit in 14days time. This car is beginning to cost a small fortune.
Strewth, before you get an Audi stealer to look at again, give Inde-Tech http://www.inde-tech.co.uk/multitronic.html a shout. They are real specialists with the multitronic, and have received some very good feedback, from another UK based VAG forum.
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'06/7 VW A5 Golf Mk5 GTI 5dr 2.0T FSI (BWA) DSG, fully loaded, colour coded,
'98/9 Honda CBR600FX, the blueberry trifle


'03 Audi B6 S4 quattro saloon (8E) 4.2 V8 40v (BBK) 6sp manual, fully loaded (gone, but not forgotten)
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