Firmware update for 6spd Gearbox

[Wildfire Lurker Find all posts View Profile Close Wildfire]

I wasn't given any paperwork with version numbers unfortunately but as cuda mentioned early in the thread the update is pretty new, how old is your vehicle? You're dealer might not be aware of the update perhaps?

[dvlpr Junior Member Find all posts View Profile Close dvlpr]

I just asked the dealer to plug the car and get the version information - I don't think you can do it any other way. Mine is plated 05/2016.

[Bill Breed Lurker Find all posts View Profile Close Bill Breed]

Had my firmware updated today the the firmware number on the paper work handed to me is calibration file 3box2400 updated software ref no 6ANCQE-089
my Prado is an 6 month 2016 it was real bad to drive will see how it goes now after upgrade.

Thanks Bill

[RB80 Junior Member Find all posts View Profile Close RB80]

Had mine done today, too early to say but seems smoother through the gears and initial response planting my foot is faster/more responsive. However there may be something jerky/clunky around low revs and City speeds but it's too early to say, only had an hour on it but it's done it twice already. Feels like it's short shifting then clunk.

[Wildfire Lurker Find all posts View Profile Close Wildfire]

Would love to say the firmware update has improved my vehicle but it still clunks around the same uphill corner at approx 63km/hr. To be honest I'm not sure anything is different at all. I'm still happy with the car overall but I honestly expected better from a 2016 model. After not getting any paperwork after the firmware update I'm a little sceptical if it was even done? If anyone works out how to check the firmware version please post it up. Cheers!

[prodoco Junior Member Find all posts View Profile Close prodoco]

Had mine done last Thursday 17/11/2016, drove for few days and didn't notice any difference so far.

[OzDriver Member Find all posts View Profile Close OzDriver]

My car is only at 6k distance from new but the gearbox behavior (Jan 2016 build) seems to have settled down and improved, so I will leave mine for a while.

[120D4D Avid PP Poster! Find all posts View Profile Close 120D4D]

Interesting someone else has the issue!

So I had the firmware upgrade and the injector re-learn. I think it drives better and a bit quiter, but it seems to still do the miss (if you can call it that) as described earlier. Toyota has been good but I can't replicate it was them in the car so I think they are reluctant to spend any more time on it.. it's not bad but it's still a bit annoying.

Had my firmware update done last week and definately notice the difference. The shifts are a lot more 'certain' and the indecisiveness has gone- this shifts are now firmer which I prefer. Call me old fashioned, I like to feel the trans grab the next gear!

Not sure about my 'miss' at this stage though, it's been warm here the past few days and I haven't noticed it. Suspect it is still there though.

[RB80 Junior Member Find all posts View Profile Close RB80]

I think the clunk I referred to above is the same thing, and still there on mine after the update. Comes across as a lurch then clunk just under the 60 mark indicated on my speedo.

After the update I thought it was selecting gears better for roadspeed and load, but recently I found myself once again adjusting throttle again to manually initiate gear changes when it bogs down at constant load. Not sure what's up.

[cuda Advanced Member Find all posts View Profile Close cuda]

I think the clunk I referred to above is the same thing, and still there on mine after the update. Comes across as a lurch then clunk just under the 60 mark indicated on my speedo.

After the update I thought it was selecting gears better for roads speed and load, but recently I found myself once again adjusting throttle again to manually initiate gear changes when it bogs down at constant load. Not sure what's up.

Yep seeing the same thing after the gearbox firmware update still. Initially Toyota said the behaviour was normal and was due to the intelligent ECU for the gearbox. I requested a Toyota tech come for a drive with me with the Techstream attached. After the drive the tech agreed that the gearbox was not behaving as it should and would be submitting his findings to Toyota. Incidentally I found out that 6th gear is selected at speeds as low as 80km/h and not the initial 100km/h I was originally told. The gearbox would need to be coaxed into changing gears with light throttle adjustments between 5th and 6th. I managed to hold 5th gear at 100km/h for over 5 mins on a flat section of road when it should have changed into 6th.

I will be following up with Toyota today to confirm what stage they are at in yet another firmware update.

Regards
Doug

[120D4D Avid PP Poster! Find all posts View Profile Close 120D4D]

Having an 'intelligent ECU' and the learning parameters that go along with it means you'll always be able to trick it by adjusting the throttle to modify its change pattern. I agree that 6th can be grabbed lower that I first thought - I noticed this the other day too when it slipped into 6th at around 80 - 90.

The clunk I believe is another matter perhaps related to the steering angle sensor that also drops out cruise control when the wheel approaches 45 degrees. I can make mine clunk into 4th by taking a certain corner whilst speeding up to 60 and the wheel is beyond 45 degrees.

My twitch though is better described in old fashion terms - a misfire. May be related to steering angle but I'm wondering about the ESC/VSC/Yaw Angle etc etc.

I know mine and Lski's are lifted - do you have a suspension lift cuda and RB80?

[cuda Advanced Member Find all posts View Profile Close cuda]

Having an 'intelligent ECU' and the learning parameters that go along with it means you'll always be able to trick it by adjusting the throttle to modify its change pattern. I agree that 6th can be grabbed lower that I first thought - I noticed this the other day too when it slipped into 6th at around 80 - 90.

The clunk I believe is another matter perhaps related to the steering angle sensor that also drops out cruise control when the wheel approaches 45 degrees. I can make mine clunk into 4th by taking a certain corner whilst speeding up to 60 and the wheel is beyond 45 degrees.

My twitch though is better described in old fashion terms - a misfire. May be related to steering angle but I'm wondering about the ESC/VSC/Yaw Angle etc etc.

I know mine and Lski's are lifted - do you have a suspension lift cuda and RB80?

Yes mine has a 2 inch lift specific for the KDSS setup.

[brock05 Junior Member Find all posts View Profile Close brock05]

Yep seeing the same thing after the gearbox firmware update still. Initially Toyota said the behaviour was normal and was due to the intelligent ECU for the gearbox. I requested a Toyota tech come for a drive with me with the Techstream attached. After the drive the tech agreed that the gearbox was not behaving as it should and would be submitting his findings to Toyota. Incidentally I found out that 6th gear is selected at speeds as low as 80km/h and not the initial 100km/h I was originally told. The gearbox would need to be coaxed into changing gears with light throttle adjustments between 5th and 6th. I managed to hold 5th gear at 100km/h for over 5 mins on a flat section of road when it should have changed into 6th.

I will be following up with Toyota today to confirm what stage they are at in yet another firmware update.

Regards
Doug

Mine is going in next week for the firmware update, I am seeing similar problems to most here. I see mine going into 6th regularly when doing speeds below approx 80km/h. On my regular drive to work which is mainly highway driving, I generally don't see it shift to 6th at all unless i severely manipulate the throttle. This is approx 15kms of highway which is mostly flat. At approx 60km/h around a large roundabout it will jerk back into 4th and appear to hesitate as to which gear it wants to be in i.e. sometimes it will stay in 4th other times seems to drop back to 5th and then back to 4th. In terms of refinement my old 3L 5spd 150 was much better in terms of gearbox behaviour and shift quality. I am concerned with all the flaring between shifts and the TC not locking up in sixth my transmission oil temp is likely to be pretty high (need to get my cooler on and scangauge hooked up so I can monitor this).

Cheers
Brad

[brock05 Junior Member Find all posts View Profile Close brock05]

Having an 'intelligent ECU' and the learning parameters that go along with it means you'll always be able to trick it by adjusting the throttle to modify its change pattern. I agree that 6th can be grabbed lower that I first thought - I noticed this the other day too when it slipped into 6th at around 80 - 90.

The clunk I believe is another matter perhaps related to the steering angle sensor that also drops out cruise control when the wheel approaches 45 degrees. I can make mine clunk into 4th by taking a certain corner whilst speeding up to 60 and the wheel is beyond 45 degrees.

My twitch though is better described in old fashion terms - a misfire. May be related to steering angle but I'm wondering about the ESC/VSC/Yaw Angle etc etc.

I know mine and Lski's are lifted - do you have a suspension lift cuda and RB80?

Interesting observations you make about the ESC/VSC etc as mine is exhibiting similar behaviour when going around large roundabouts etc. I also have a lift.

Cheers
Brad

[Lski Member Find all posts View Profile Close Lski]

Interesting observations you make about the ESC/VSC etc as mine is exhibiting similar behaviour when going around large roundabouts etc. I also have a lift.

I had a slight driveline clunk before my lift, but post lift it went away. Assume it was due to the change in tailshaft angles.

I do have what is being discribed as a misfire which I've detected occurs at around 1300-1400rpm, around 60-65kph under slight load and going around a slight corner. If all those stars line up I 'may' get the minor miss.

I actually thought the same thing about the ESC specifically and have begun some testing to see if I can replicate it with the ESC disabled. So far I haven't been able to, but it is only early days..

Would be good if we can identify what it is exactly and better still find a fix..