My 2006 HSE has been showing a "Transmission Fault - Traction Reduced" warning since I bought it a year ago and when I scan using my Gap tool I get "Rear Diff-P080A-00 (2F) Clutch position is not learnt" fault. All of these are signs of a bad differential locking actuator (either an issue with the drive motor, the internal wiring\control, or the gearing) or bad power going to the actuator. Thankfully I've never had any issues driving this truck in normal conditions and in modestly challenging terrain it has performed admirably at various settings (I've avoided swamps and quicksandf until the issue is fixed). After saving up my pennies for the past year I took it into the local British auto shop for a diagnosis and they confirmed the issue to be a bad actuator because juice to the assembly was OK when it should be. Quoted me a heap of money for replacing the assembly but that's to be expected at a shop with more Rolls and Bentleys in the driveway than you'd find at one of Prince Andrew's stag parties.

The shop ordered part LR032711 from a nearby Land Rover dealership to do the work. This should have been the right part given what you can see at https://parts.landroverpalmbeach.com.../LR032711.html (this wasn't the dealership, but the part webpage for the one supplying the part is exactly the same). When the dealership announced that the part was in, the shop pulled the existing assembly and took it to the parts department for the exchange, but what had been delivered was just the motor part, not the entire assembly. That wouldn't be an issue if the new OEM motor could easily be swapped into the existing assembly but it didn't look like it would fit, The dealership was adamant that they had ordered and received part LR032711, and the argument the dealership made was that the motor is a revision of the earlier version, but it only fits a new assembly housing. As such, I would have to purchase both the motor and a separate housing, which supposedly is part LR041063, if I wanted a complete set. LR041063 does look right for the housing (see https://www.lrparts.net/lr041063-loc...overy-3-4.html as an example) but just about everything I can find on the Interwebs suggests that LR032711 is the whole enchilada (see, e,g,, https://www.google.com/search?q=%22L...nt=products-cc ) but the one exception is an eBay ad where they show the box the product came in. As you can see from https://www.ebay.com/itm/35322259307...evt=1&mkcid=28, the box for this motor-only part clearly says LR032711.

It seems silly to buy the motor and the housing separately and combine them for a replacement when the entire assembly (including both motor and housing) could be obtained for less. The British shop I use wants to rely on what the local LR dealer is saying, but I did get them to agree to do the actuator swap if I can find the right part. It's clearly not a problem to find non-OEM versions with prices that are much less than what the dealership wants for the motor alone, but I'm wary about going that route for such an integral and difficult to swap component. Note that I use non-OEM parts all the time; when the A\C blower goes out, for example, I get a cheap replacement from my FLAPS and then I stick it in with a few minutes of work...but a differential actuator?

So my questions are:
1) Do you know the correct LR part number for the full assembly with motor and housing?
2) Do you know a source for an OEM assembly?
3) Have you had good or bad experiences installing less expensive non-OEM differential locking assemblies?

Thanks!

Nick in Palm Springs

 

Hmmmm.....you're in a pickle.

I got mine changed a few years ago; wow, maybe like 8 yeas now that I think about it.....time flies. I didn't really pay much attention to part numbers or do the sourcing myself. I have a great rapport with the dealer service dept (and parts dept) and they took are of all of it. I don't think I paid more than $500 though so that first part you showed makes sense. However, it was a while ago and perhaps the part numbers and the way they are packaged, has changed.

(yes I had the same fault/message you described, and yes that R&R fixed it)

 

I think I found the LR part number for the combined assembly: TVK500200, which is $990 from the local LR dealer that couldn't figure out what part to order in the first place. A much less expensive version is which offers a non-OEM version that claims no programming is needed for just $254. One of the reviews on Amazon does appear to be real, addressing the issue of programming expressing the same level of dissatisfaction I have with the issue of the two components being sold separately by LR. I'm really tempted to go this route.

I'll keep you all posted about my experience in order to provide some data points for others facing this in the future.

Nick in Palm Springs

 

...not with a part this important. Stick to genuine LR.

 

LR032711 is the correct part number for a complete assembly, motor and gear housing. Also LR011036, LR030848, TVK500200, LR032712 (LR032712 is for a reman unit I guess) and god knows how many more stupid part numbers... Biggest pet peeve with LR.
LR041063 is indeed correct for just the gear assembly as a sub-assembly.

Is just the motor available on its own? Likely. As you show in the eBay link, there it is with just the motor. And here are two more sources:
https://www.lrparts.net/lr032711-rea...and-rover.html
https://www.europaparts.com/differen...hoC4ZoQAvD_BwE

Yet so many other sources show it as a whole kit with gear housing. So I dunno. Gotta love LR.

Im no aware of any change that was significant to the actuator, so as far as I know the motor portion is pretty easy to swap with the gear housing. I have taken mine apart.
https://landroverforums.com/forum/lr...ection-101515/

Also I am attaching two more things. The TSB for a failing actuator. By the way, never put off getting this issue resolved. A bad actuator can destroy the diff clutches. Anyway... attached I the TSB which you should read. But more interestingly is the shop manual explaining how to replace the actuator. I wish there was more to it, but it does indeed show removing the four bolts for the housing on the diff. It does not say to remove just the motor. So while they clearly call it the "differential locking motor" they seem to include the gear housing as part of it...

​​EDIT: I will add that while I can find pics of LR diff motors with official LR boxes, I have yet to find a complete assembly pictured next to an official LR box.

 

Great intel! The motor is definitely available as a standalone part. That's what the local LR dealer produced when my shop ordered part LR032711. That wouldn't be so bad because it seemed like the motor was the problem (no movement when directly energized with a test circuit), but supposedly the person from the shop balked at doing the exchange at the dealer's part counter because the bolt holes for the new motor didn't look like they would line up on the old actuator housing. That's what I was told, but sometimes dealing with multiple parties on an auto repair is like playing the kid's game of Telephone, and you never know if what you are being told after two or more rounds of hearsay is a precise replication of what was actually said.

Your tech bulletin is beautiful. I've printed it off and will be handing it to the shop when the full assembly is finally available. I hate the idea of spending nearly $1,000 for OEM when it looks like $250 will get a solid looking version of the same thing, but I have to think about my dealings with the shop if they install a non-OEM version that I got off the 'Net and something isn't quite right after installation. It could be that they failed to do the software update or didn't calibrate the newly installed component correctly but you know they'll first blame the crappy part I gave them. That puts the fiscal responsibility on me, and I can see a never-ending money pit developing. If I simply tell them the part number I found on the local LR dealer's website and let the shop do the ordering as usual, that puts the onus on the shop to get the right part and on the LR dealership to deliver it. If the OEM part fails or has some other issue after install, there would at least be some sort of warranty claim possible. Probably worth the extra $750 to have that bit of insurance.

It's too bad that we don't have a direct phone line for the official LR parts warehouse. If that were the case, one could simply call one of the warehouse clerks, give a part number, wait on hold for a while, and eventually get an eyes-on description of what would be sent if ordered. That's what you could do back in the old days if you knew who to ask and then asked politely, but I imagine that in 2022 the kindly old clerk who had been working at Land Rover's main U.S. parts warehouse for many decades and could recite 90% of the part numbers for every component on any particular model, year, and trim has been replaced by a robot of unparalleled efficiency that would never waste time dealing directly with an insignificant customer like me. Progress!

Thanks for the advice,,,

Nick in Palm Springs

 

Yeah, its sucks. The cheapest I could buy both parts was $800 plus shipping (about $50 from the UK to the US). And thats almost wholesale pricing. It's just weird how the part is referenced they way it is and how LR may supply the motor, but all the third part vendors supply an entire assembly for no apparent reason. What is also weird is how the actuator has no LR part number on it. In all the photos I can find of an OEM actuator, they have the LR logo. But none seem to have any of the part numbers start with LRXXXXX... So that certainly does not help too. I also feel that out there is a more in-depth service routine written up for replacing the part that may go into more detail. Would be nice to find that and see what is all written out.

For the record I went third party. And I did have issues after install for a few months. I outlined that in the thread I posted above. I no longer have the clank I heard a couple time off-roading in mud (could have been actuator OR my rear upper arms, was never certain). The chirping sound on start up and shutdown of course is gone. And oddly the code for "transmission component slipping" which is directly related to the actuator, well that has not come up in many months - oddly. And I have been doing some sketchy stuff where I would know if I was not locking in the rear diff. So I took a gamble on a cheap part but I probably wold not do it again. What is annoying is when I replaced mine the replacement OEM motor was just $300 USD. Now its $550...

 

So I have a couple of used diff lock motors laying around and was surprised to see that there isn't a land Rover part number on them. One I have is made in Germany and the other Poland... It appears that the number 404.852 identifies the motor assembly as it's on both tags on the used motors and also on the tag of the Europaparts image in the link posted above.

 

I have the same sets of numbers (404.852 and 406.338) on the motor portion of my existing actuator assembly, but stamped on the metal of the gear housing portion is 404167 (presumably 404.167 if the XXX.XXX convention is followed). Googling that number turns up a couple of used parts for sale, but nothing from the OEM LR parts suppliers or any of the exploded parts diagrams.

Nick in Palm Springs