Originally Posted by Lagonia

I went to an independent Jag outfit here in Austin and he charged me 1 hr of labor which cost me $100. I now have my own IDS/SDD software setup and can do it on a whim

Originally Posted by Fraser Mitchell

I think the main thing is not to panic, because your symptoms indicate that a reflash of software in the TCM is all that is needed.

I have now had two software reflashes, one in summer to cure rough changes in the lower gears, especially 2-3, and only the other week to (at last) cure the "hunting syndrome" which occurs during warm-up. This latter I had noticed shortly after buying the car, but had put up with it until recently, but decided to finally get it fixed. These software reflashes are not expensive.


The transmission fault light coming on can also cause the car to go into "Limp Home" mode and lock the car in a particular gear, but can usually be cancelled by switching off the engine, but the fault will continue until the reflash has been done. These reflashes arise from service experience with the ZF gearboxes, plus customer complaints. If it occurs during warranty then the customer pays nothing, but after that the labour is charged, although the revised software is free.

Hope this helps you.