Thread: 8 SPEED AUTO WON'T CHANGE UP

Whats the total vehicle mileage ?

Does changing to sport mode then back to drive fix it?

Originally Posted by loanrangie

Whats the total vehicle mileage ?

just over 146,000, I bought it at just over 100,000

Originally Posted by Graeme

Does changing to sport mode then back to drive fix it?

Didn't think to check that this morning when it did it, however I think I may have done that on one of the other occasions, but if I did I can't recall the result.

It last did it around 6 weeks ago when the missus was driving it and she came home complaining........
Prior that it would have been around 12 months ago, definitely pre COVID.

This arvo following my post I just reset the adaptions with foot on accel for 15 secs etc and it now shifts even better than it did before, which was pretty good anyway!

I don't drive the car hard, the only time it sees over 2,000 rpm is when towing the 3.0T c/van and then only take it to 2,500 ish with Sport mode combined with the paddles.

95% of the time the engine wouldn't exceed 1700 rpm I think.

Maybe I need to drive it with more spirit!!

The other weird thing that it did twice over a week last month in same circumstances when towing the c/van was, and this is somewhat difficult to describe:

Picture this.
In a country town, with c/van, starting from traffic lights and immediately going up a short steep rise after crossing the intersection, getting into 3rd gear via Sport mode/paddles, going about 50 metres up the rise and then turning tight left into and up another steep hill, as I accelerated around the slow left corner (doing roughly 10-15 kph) and up the steep hill I decided to paddle it back to 1st gear, but it seemed to find a neutral ie, no drive, and it would not rev above 1,000.
Or, maybe it seemed like neutral/no drive simply because revs went back to 1,000 and no drive at those revs with 3.0T on board??

Motionless for about 3-4 secs, definitely no longer, which seemed like an eternity, but no response from the accel pedal at all, then it picked up revs and took off and I changed gears via paddles up the steep hill no probs.
I'm wondering if I "confused" the tranny in some way??

Trans temp was 106 and engine coolant same. Ambient was about 26 deg.

Behaved itself perfectly after that including many steep hills on the West Coast Tassy and back to 2nd/3rd gear on many occasions.

Originally Posted by Discodicky

I just reset the adaptions with foot on accel for 15 secs etc and it now shifts even better than it did before, which was pretty good anyway!

I've not heard of this procedure before. What's the whole procedure?

Were the problems occurring before the throttle module was fitted? I'd be inclined to disconnect it anyway to see if the problems still occur.

Your driving sounds very similar to mine although without the shift problems.

Originally Posted by Discodicky

This arvo following my post I just reset the adaptions with foot on accel for 15 secs etc and it now shifts even better than it did before, which was pretty good anyway!

I haven't heard of this method, can you explain please?

Originally Posted by rocket rod

I haven't heard of this method, can you explain please?

It’s not quite right, he’s missed the major bit.
This is 6 speed version of same.

Requires box adaptations to be reset.

Originally Posted by Graeme

I've not heard of this procedure before. What's the whole procedure?

Were the problems occurring before the throttle module was fitted? I'd be inclined to disconnect it anyway to see if the problems still occur.

Your driving sounds very similar to mine although without the shift problems.

Yes, definitely did it twice prior fitting the I-drive, and when the missus pinched it the other day to nip up from our shack to visit a girlfriend I put the I-drive back to "zero" as she doesn't like the action. She stays out of trouble re accidents but is not much of a driver re techniques and won't listen when I try to explain how to use the paddles if it ever does it again..............

Re the tranny re-set, you can Google (from memory) "Disco 4 re-set", but here is what you do.
(BMW also say same with the ZF in their cars.)

PROCEDURE FOR MEMORY RESET ON ZF TRANS: In this order.

Press start button to switch ignition on but DON'T start engine.
Press accelerator to floor and hold it there.
After approx 15 seconds, switch off ignition.
Lift your foot off accelerator.
Wait 2 minutes before starting the engine.


It made a noticeable difference to the smoothness of shifts and it was pretty good before, anyway.
There are others much more knowledgeable than me on this Forum who work on these cars every day and who may like to add comment.