Thread: resetting L322 TD6 computer

Hey there Jim,

"It depends"

If what you mean by resetting the computer is reading and resetting logged fault codes then there are a number of solutions available. These range in functionality and price from a few hundred to several thousand.

If you just want to reset the fault codes this can be done via the "hidden" menu on the L322 for free. Search the forum and you should find several descriptions of this procedure (if not PM me and I'll send you a copy).

The tools I'm most familiar/aware of are RSW Solutions All Comms tool (this reads and clears most faults on the L322 and adjusts a few settings), the HawkEye tool (this reads/resets and performs a number of diagnostic tasks) and the BBS Faultmate tool (this reads/resets and performs many diagnostic procedures that even the LR T4 system doesn't).

Prices for these are around $300, $800, and $1600 respectively. You get what you pay for here. Hard Range (a vendor on this forum) have the All Comms and Faultmate here in Oz. The Hawkeye used to be available through a local vendor but they've gone wholesale recently so best option is probably in the UK. Others here may know of a local dealer for them.

If you are talking about resetting in terms of replacing an ECU on the car with a new one and making it "relearn" settings for the car then only the Faultmate, LR (dealer) T4 system, or AutoLogic can do this.

If you are serious about doing maintenance on your own vehicle or want to really understand the innards better my personal choice would be the Faultmate.

Let me know if this answers your question or need something a little more detailed.

Cheers,
Iain

Thanks RangieBit. My problem seems to be the auto box. In particular the torgue converter lockup. When lightly accelerating the motor revs to about 3grand. Dropping off the accelerator sees the revs drop to about 12oo. O.K. that would be normal. However a slight movement of the go pedal sees the revs jump again. I take the car to my local service centre (land rover specialist) and he resets the auto box computer. and It drives like a dream with the car pulling away under acceleration with revs staying below 2 grand. It stays like this for one to two weeks and then goes back to its old frustrating habbit of overreving on acceleration. Could I have a torque converter problem, but why would just resetting the auto box computer fix even temporarily an ongoing problem. Jim

Hmmmm,

Well you may have a torque convertor problem, or you may not. The torque convertor generally doesn't lock up until the vehicle is travelling more than 80kph anyway. If at 100kph you are experiencing this problem then you seem to have an issue with the TC.

Does your dealer/indy indicate what faults he sees and clears when you take it in to him? These are probably really good indicators of what your problem really is, if they are known.

The auto transmission ECU goes into "learn" mode if a hard reset is done to it. That is, it goes into a factory default shift pattern and learns how you drive every time you go somewhere. This is one of the reasons a car that has done mostly highway work will seem to drive very differently to one driven around the 'burbs at peak times or different again from one that tows things. This could be why it seems OK for a little while after his "magic" touch. The transmission is still operating in default (low stress) mode initially.

Not knowing the age or distance travelled by your beast it's hard to say categorically that you have a TC problem. L322 transmissions that have had a stressfull life and have not been maintained every 40000 kms or so are known to have issues, starting with the TC. Have a search on this forum and you will find many a tale of woe around the tranny in an L322. They seem to start, on average, around the 150K mark.

It may also be a dodgy AT ECU. They don't seem to have problems as often as hardware issues with the actual transmission but they are not unknown.

Knowing what faults the auto transmission is logging (if any) would be a good place to start.

Cheers,
Iain

My service person indicated today when he reset it that there were no faults logged. I purchased this L322 around a year ago and it had had the auto box fully rebuilt, reason unknown. It now had 159,000k on clock. Jim

Hi guys. Another tool to add to the list is the IIDToll from GAP-Diagnostic. Reads & resets faults . Can also adjust suspension heights. Sorry but wont fix gearbox for you

Gary