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D3 - Transmission Gearboxes, diffs, drive shafts. |
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#1
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Gearbox Issue - Service
Hi all,
i have problems with my A8 W12 2008 gearbox and hard shifting between 3rd-4th occasionally. Recently is much more prominent and started acting very weird like it doesn't know at what rpm to switch and rmp going up and down while traveling on gear. It feels like a software issue possibly due to some issue inside the gearbox. I have read a lot recently and having hard time to decide where to bring the car to be fixed. I live in London so any recommendation will be greatly appreciated. Thanks Jim |
#2
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First thing would be to plug on to VCDS to see if it throws up any errors. I can vouch for VWAudi in Harrow, speak to them too.
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A8L 3.0 TDI sport executive 2014. Audi A2 1.4 petrol 2002 SOLD. Audi A8L 4.2TDI Silver 2006 Seat Ibiza 1.4tdi Eco 2008 Silver (£0 Tax)sold NO VCDS rely on Neeldub |
#3
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Quote:
I did have a fault a couple of years after the gearbox was reconditioned, where it went into limp mode, even whilst sitting parked up with the engine idling in Park/Neutral. Contacted KSM and they diagnosed an electronics issue of some kind - true to form, the gearbox controller or TCU had failed. Had to wait a few months and ordered a replacement from the forum sponsors. Plug and play, very simple fix for around £110. I hope your problem is a software/sensor one - if it's a mechanical issue, then it might start to get expensive.
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2010 B8 S5 Sportback quattro 3.0 Supercharged in Sprint Blue (current girlfriend) 2000 D2 A8L quattro 4.2 in Audi silver (my ex-girlfriend) |
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