Where is gearbox ecu located on a 1999 audi auto a4

It is inside the transmission.

I’m happy to help further over the phone at https://www.6ya.com/expert/anthony_dda4e0152e94f3c0

its and speed sensor. should be on transmission.. check with auto zone..

give the dealer the chassis # (from the lower windshield)and they will order up the right part...

You really should not drive your car in that condition.Resetting codes will not help and it's a waste of money. All indicates problem with torque converter. Service immediately!!!!

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

vw/audi recon its in for life,but i would change at 100k,cant do any harm.....

at speeds below 100km the car accelerates fine. above 100km the reves go up but there is no torque as if car is lazy.
what can this be
Jimmy

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 its the rear ,or the sometimes called pumpkin.There should be a plug that you have to unscrew .sometimes its a 3/8 drive that's the size in the center of the plug.Once opened you could stick your pinkie in the hole and be able to touch the gear oil.If not you need to top off use the squeeze bottle type of gear oil.Once you can touch oil then its full