Audi A4 Multitronic Gearbox

Definitely mechanical. The grinding noise when put into park suggests that you have a bad final drive part. Are both front axles still bolted to their yokes? There's a really common issue with axles in VW/Audi cars.

That is very likely a wheel bearing staring to go out to lunch.

i suspect a LAY SHAFT BEARING but without a drive i couldnt say ,if its the pinion and crownwheel then i doubt this but it just needs setting up to a wiggle woggle on the backlash this is achieved by moving the crownwheel in or out of mesh with the pinion by adjusting the cap bearings ,but removing this gearbox and playing around with it on advice of who knows who is not advisable ,with it on the bench in front me i can do this adjustment with my eyes shut and just feel it but its taking it out for starters ,now this tiptronic type box with the paddle controls or whatever uses hydraulic transmission oil in the gearbox which doesnt do the crownwheel any good at all as EPoil is needed for this and it has the same oil as the autoboxes ,best advice is to find one in the scrapyard and just change it complete.Like the early minis with automatic gearbox and the engine oil running through the lot .URGH showing my age here i think

Hello im a mechanic guy for Audi and Volks? u r from which country plz ?

this gearbox is computer controlled,you will have to get it on the diagnostic machine to isolate the problem,we would all be guessing if we said its so and so.......

Sounds like your g/box ECU has freaked out, look on the net for a repairer

Don't know because they were only introduced in 2001, and they are doing well so far.
Supposed to be better then a normal automatic.

I'm having a similar problem with my '05 A4 Multitronic with 75,000 miles on clock. PRNDS lights are all blocked out but not flashing (which I believe is worse). Car is driving ok after I had the EGR valve replaced by dealer at cost of £454. Dealer quoted me a further £1,077 to fit new gearbox ECU. Found a few websites that claim to be able to repair the ECU, best one seems to be www.BBA-Reman.com who quoted £169 +VAT + carriage. You do however need someone to take off and fit repaired ECU, had quotes ranging from £150 - £250 + £60 for 6L of new gearbox oil. However, I have been told by 3 independent garages that specialise in Audi's, BMW's & Merc's etc that they cannot be fixed, so I'm a little sceptical. To summarise the cheapest quote I've had for a new ECU fully fitted is from a garage on Tyneside (where I live) called Swift Motors 0191-2140056 who said they'd be able to do the lot for £860. Only bought car in February, absolutely love it, but sick as f**k at this unexpected cost which I can't afford. Had to take payment holiday from mortgage to cover the costs. Should have stuck with my old Ford Focus!! If anyone can offer any other tips I'd like to hear.

Hi Frank I am a technician with audi myself It may be that you require an engine e.c.u and not a gearbox one however has your A4 had any recalls carried out on the gearbox since purchase if not that would definately be something worth checking hope this helps.

If it is the display for the gears flashing, this indicates a fault with the gearbox system, this is more common on multitronic gearbox's