Hi guys anyone know if the 2007 3.6 TDV8 gearbox is the same and can be fitted to a 2011 3.6 TDV8? 1990 3.5 v8 defender
2000 4.6 v8 30th anniversary prins lpg
2004 4.4 v8 vogue prins lpg
2011 4.4 TDV8 Vogue
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Last edited by klf400 on 8th Sep 2024 6:34am. Edited 1 time in total

there is no 2011 3.6L tdv8 afaik. Do you mean the 4.4L? if so then probably no, as 3.6L is 6 speed and 4.4L is 8 speed.

It’s definitely a 3.6 TDV8 2011 which I have a gearbox issue and was wondering if I can transplant the same 6 speed box from a 2007 3.6 TDV8 1990 3.5 v8 defender
2000 4.6 v8 30th anniversary prins lpg
2004 4.4 v8 vogue prins lpg
2011 4.4 TDV8 Vogue
faultmate extreme
rsw allcoms
Autel 906BT
Gap iiD tool

Last edited by klf400 on 8th Sep 2024 6:34am. Edited 1 time in total

For MY10 the canbus was changed so the mechatronic unit from the MY10 would need to be fitted to the earlier box.

The 3.6 TDV8 used the same transmission (1068 020 075) for a number of years. Whether it changed towards the end (to 1068 020 092, maybe?) I’m not sure. Are you able to read the ZF model number off the casing?



Phil

Hi Phil , I will have to check this out and report back,my reason for thinking of changing the gearbox this being a 2011 model is it sometimes feels like it’s slipping (like a worn clutch ) comes up with gearbox fault, if you recycle the ignition it goes away but does come back , only just recently bought the car so still investigating the issues, it didn’t show any gearbox fault codes either 🤔

Range Rover has 162k recorded miles and I have a complete donor 2007 model so at the moment not sure what direction to go with 1990 3.5 v8 defender
2000 4.6 v8 30th anniversary prins lpg
2004 4.4 v8 vogue prins lpg
2011 4.4 TDV8 Vogue
faultmate extreme
rsw allcoms
Autel 906BT
Gap iiD tool

Last edited by klf400 on 8th Sep 2024 6:35am. Edited 1 time in total

Do you know if the box has been serviced? You can start there will flush with new fluid and filter pan change.

ZF8hp70x gearboxes are pretty easy to source as they’ve been used in so many vehicles. They have a good reputation for reliability, so putting a used one is not a huge risk.

Also there’s a number of places that will repair them.

This gearbox is a 6HP26 it appears to be the same on the 2011 and the 2007 will post the pictures of the serial numbers etc shortly 1990 3.5 v8 defender
2000 4.6 v8 30th anniversary prins lpg
2004 4.4 v8 vogue prins lpg
2011 4.4 TDV8 Vogue
faultmate extreme
rsw allcoms
Autel 906BT
Gap iiD tool

RRPhil wrote:

The 3.6 TDV8 used the same transmission (1068 020 075) for a number of years. Whether it changed towards the end (to 1068 020 092, maybe?) I’m not sure. Are you able to read the ZF model number off the casing?



Phil

Hi Phil
I have taken pictures of the casing here they are as follows first pic 3.6 TDV8 2011 car to receive gearbox

Click image to enlarge

Second picture is 2007 3.6 TDV8 which is the donor car

Click image to enlarge

Unless I’m mistaken they both appear to be 020075 1990 3.5 v8 defender
2000 4.6 v8 30th anniversary prins lpg
2004 4.4 v8 vogue prins lpg
2011 4.4 TDV8 Vogue
faultmate extreme
rsw allcoms
Autel 906BT
Gap iiD tool

So your two transmissions are physically identical. The only difference between them will be the software/firmware version. Were you thinking of transplanting the electronic module off your 2011 onto the 2007 Mechatronic or recoding the 2007 transmission with your 2011 VIN?

Phil

Not sure on that Phil what do you think the best/sensible option to do, I guess recoding the 2007 with the 2011 vin would be easier but not necessarily the best option, is it much of a job to transplant the electronic module onto the 2007 mechatronic ? 1990 3.5 v8 defender
2000 4.6 v8 30th anniversary prins lpg
2004 4.4 v8 vogue prins lpg
2011 4.4 TDV8 Vogue
faultmate extreme
rsw allcoms
Autel 906BT
Gap iiD tool

If you fit the 2007 gearbox into your 2011 it won't come out of park until you have coded the gearbox to the car.

If you've got an IID tool you can do this after purchasing the firmware from GAP. It was £25 when I did mine a couple of years ago.

Once the firmware was flashed it was easy to do.

If I was swapping the boxes I'd be replacing the 4 mechatronics sleeves above the valve block along with the bridge seal and also the electrical sleeve. I'd fit a new sump and load it all up with fresh oil too

David. 2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2007 Range Rover Supercharged in Java Black with Ivory Leather
2012 Range Rover 5.0 SC Autobiography in Indus Silver with Jet/Ivory Interior
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior

klf400 wrote:

Not sure on that Phil what do you think the best/sensible option to do

Hmmm. I guess there’s pros & cons for either method.

Swapping the electronic module from your 2011 means that you have the later ZF firmware version and there’s no need to reflash the ECU (which is not without risk). Obviously, it would be best to reset the adaptions as the solenoids are different, as is the amount of clutch wear.

The downside is that it involves removing the Mechatronic unit and then the electronic module, though this is pretty straight forward (just removing screws). As dhallworth mentioned,
ideally you would also replace the 4 jump tubes, the bridge seal and the connector sleeve at the same time. It’s obviously messier but, if you’re removing and replacing a complete transmission anyway, this extra bit of work probably doesn’t seem too bad.

On the other hand, reflashing the 2007 ECU to your 2011 VIN is ‘cleaner’ because there’s no need to remove the Mechatronic unit or the electronic module. There were at least 6 firmware versions for the 1068 020 075 transmission shipped by ZF between March 2006 and May 2011. Each has its own ‘022’ ZF part number and Land Rover part number:



There may be a sticker on the bellhousing which identifies this part number. Note, though, that these are all 1068 020 075 transmissions and are identical in every way other than the firmware in the controller.

When Land Rover install the transmission in the vehicle on the production line they then program the transmission controller with their own calibration software and code the transmission to the VIN. What I don’t know is whether, when you reflash the ECU, you are just copying across the calibration software and recoding the VIN, or if you are actually changing the ZF firmware version to that from the donor. So you may, or may not, be updating the firmware version. Does anyone else know?

Phil

Hoe do these revisions compare the the engine software? Are the as many engine updates? I assume those software sets communicate through given inputs.
And if so, flashing engine ecu with the newest software might be an option as well.

Just looking at a couple of previously-enjoyed 1068 020 075 transmissions for sale on eBay, it would appear that the sticker which identifies the ZF firmware version (i.e. the ‘022’ number) is placed on the tail of the casing at the top, which I guess makes it impossible to see while the transmission is installed in the vehicle .