Thread: Transmission Fault Warning

I have had the transmission fault appear a couple of times recently, it's off to the dealers for a service in a week or so, I'll post the results. Symptoms appear to be similar, twice it has been after a fairly steep pull in low range and once with a trailer on the back. On a training day a few weeks ago someone with a late D3 also had the same issue in similar circumstances.

Regards,
Tote

I spoke to the dealers about this and they suggested it was probably just overheating as I concluded.

My theory is that as it was a long and step uphill grind in low range the transmission fluid was most likely not able to circulate as easily as it probably should have which mean the heat transfer effect of the fluid was negated and this may have attributed to the overheating.

Still a bit suprised as whilst the country is quite steep I was not driving hard and had almost no load on board, would hate to think what would happen fully loaded.

I drove back from Thredbo today and everything ran perfectly so will get it checked at the next service unless I get another fault warning.

Regards,

George

Was it this problem- posted by rmp?
http://www.aulro.com/afvb/d3-d4-rrs/...en-before.html
The "F" fault- locks itself into 3rd gear low range when climbing.

Cheers

Originally Posted by rbb

Was it this problem- posted by rmp?
http://www.aulro.com/afvb/d3-d4-rrs/...en-before.html
The "F" fault- locks itself into 3rd gear low range when climbing.

Cheers

Thanks rbb, I do recall reading that thread some time ago but had forgotten it.

Based on the first few posts of the thread and what I experienced it would appear that D3's transmissions do not like long uphill stretches in low range as it over heats the transmission or something like that and prompts a warning.

Anyway out again this weekend around Abercrombie National Park on Saturday and then Mount Walker in the Lidsdale State forest near Lithgow on Sunday so will see if it happens again.

Regards,

George

I recently came back from a trip around the Thompson Dam with long steep uphill climbs.
I was in low 2nd using comand shift & experienced no transmission warning messages.
I have comand shift to be the best options for both up & down hill work.

I rarely use drive when in low range.

Regards

Chuck

Chuck,

Both times I had the warning appear I was using command shift and in either 2 or 3 low. I did not have it in any of the TR settings at the time either.

As you note, I rarely just stick it in D for drive except when it is reasonably flat.

Regards,

George

Hi George,
It's bets on that it will happen again.
I don't believe it is heat...just some hypochondriac sensor, probably unrelated to the transmission!
Like rmp, take a photo of the warning and take it back to LR for them to diagnose the problem.

Cheers
It will happen in D or command shift in my experience

Had my service yesterday, there were lots of codes possibly not related to the gearbox fault as it had a hissy fit with a trailer on the back and I'm prepared to blame the trailer wiring. However I did get a possible theory on the transmission faults I have seen on mine and another D3.
The story I got goes like this....
The transmission monitors input and output shaft speeds on the transmission and knows when a clutch is slipping. The theory is that under some conditions there may be a momentary cavitation or starvation of fluid which releases pressure on a clutch causing a slight slip which is detected by the speed difference and then the transmission goes in to limp mode.
Restarting the car fixes it immediately so it's not an overheating issue.

The dealer couldnt offer any more suggestions except to monitor it and return for a closer look if it faults again.

Regards,
Tote