"PRNDS" flashing intermittantly

[Macdoon]

Hi Audi nuts
(A4 B6 Black 1.9TDI 130(re-mapped 170) sport multitronic)
(Done - Tints, re-map, debadged, front grilles replaced with all black, S4 mirror caps.
To Do - front & rear LED lights, convert to double din, 1/2 leather interior)

Just got back from Audi, VAG.COM dictates gearcox control unit sporadic fault, cost to replace £1500 ouch , any ideas re: replace or repair (i know there are some wizzkids out there.
Any input appreciated.
Thanks
Mac

[Dark Horse]

Plenty of threads about this, here's mine -> https://www.vwaudiforum.co.uk/forum/s...ad.php?t=74514

Most likely need a new ECU but some dealers are quite competitive. Otherwise, Inde Tech in Milton Keynes (http://www.inde-tech.co.uk/multitronic.html) are experts and will do cheaper than the dealers.

Other alternative is get the ECU reburbished from ECU testing (see http://www.ecutesting.com/audi_a4_a6...c_gearbox.html but you'll still need someone to fit it (and it needs a fresh fill of MT oil too).

[Macdoon]

Plenty of threads about this, here's mine -> https://www.vwaudiforum.co.uk/forum/s...ad.php?t=74514

Most likely need a new ECU but some dealers are quite competitive. Otherwise, Inde Tech in Milton Keynes (http://www.inde-tech.co.uk/multitronic.html) are experts and will do cheaper than the dealers.

Other alternative is get the ECU reburbished from ECU testing (see http://www.ecutesting.com/audi_a4_a6...c_gearbox.html but you'll still need someone to fit it (and it needs a fresh fill of MT oil too).

Thanks Dark, will look into it
Mac

[warp_speed]

Thanks Dark, will look into it
Mac

I had a standard automatic before on another non Audi car and the flashing selector lights indicated a bad selector mechanism, does the CVT gearboxes have a selector box, think the problem was the selector dried out and the contacts in the selector corroded.

I'm just wondering if this could be the issue rather than the gearbox ecu, which are normally solid when it comes to reliability.

Of course I could be wrong and the selector could work in an entirely different way on a multitronic gear box

[Dark Horse]

Yep, could be the switch but the OP had it checked with VAG.COM, might be worth getting a second opinion?

[blackpool1974]

Hi,

You havent recently added xenon hid lights have you ?? as this causes this problem, electrical interference.

Had it on mine until I moved one of the ballasts

[phil miller]

we had this on an A4 at work and it was the ecu, from TPS itg cost us £690 inc vat

[Macdoon]

Thanks All

phoning around at the moment to get a better price, anyone know of anyone in or around essex.

Mac

Ps. Not had lights changed yet.
According to Audi the fault is sporadic, and mentioned it may affect reverse gear, so guess i might be looking for a 2nd opinion also.

[Macdoon]

we had this on an A4 at work and it was the ecu, from TPS itg cost us £690 inc vat

Hi Phil
Thanks, forgive my ignorance, who are TPS
Mac

[blackpool1974]

Hi Phil
Thanks, forgive my ignorance, who are TPS
Mac

http://www.thetradepartsspecialists.co.uk/index.php

I think you have to be trade though