@Auch - It is JLRTB02076NAS1 - "Intermittent Passive Entry Operation". It seems easy enough for someone reasonably handy. Lots of steps and the worse is the trim. The sensor is in the inside of the boot in the upper left right by the rear door door of the passenger (USA) side and needs to be moved to the driver's side (Left). Maybe a splice. It's only .8 hours of warranty coverage so the service tech is either quick or another example of OEM warranty work being less than the actual repair and the Dealer gets stiffed for the delta. This is the main reason Dealers HATE warranty work. The OEM rarely covers the actual time.

EDIT: My favorite part. I bet the Dealers just LOVE this: "An allowance equivalent to $0.70 has been allocated per repair to locally source a 10 mm internal diameter ground terminal and a 200 mm length of 0.65 mm diameter wire."

EDIT 2: I read the entire bulletin. It should easily be done in .8 hours. Rather than routing the entire harness to the left hand side it was a pretty slick repair/hack. Basically at the sub-harness connection in the left (driver) side rear quarter trim (where the door opens in the rear), a new RF receiver is grafted into place. If it was just rerouting things, I would rather do it myself than take it into the Dealer (just because it would be faster to do it than to drive there & back let alone the logistics of leaving the Defender). Now that it includes a new RF receiver ($109 USD retail), I'll just add it to the list of things when I am eventually forced to go in.

 

I had my dealer do the tech bulletin and it resolved my keyless entry issue completely. I've had zero failures to unlock since the work was done months ago. Definitely recommend anyone having the fob issues get the work done. It took my dealer a few hours start to finish.

 

If anyone (or their dealer) is having trouble sourcing some of the parts for this TSB repair, I have the radio-frequency receiver and the electrical connector required. I had purchased them in anticipation of needing the repair, just before my new D110 arrived last year. It was early in the semi-conductor shortage and I figured they would be out of stock for a very long time... now that's a real mixture of OCD and paranoia !

I have them listed here for sale as I don't seem to have the reception problem and don't need them... everything works just fine.

eBay sale link

 

Thanks all for sharing such rich detail on this topic. I do enjoy understanding what is happening to others, so I be learn a bit and become aware.

I have always noticed the key push issues you note on my 2020 D110 and I just kinda live with it -- as the key access is not of value to me much. But, I still value knowing.

On a similar note, I did finally suffer from the A pillar noise thing. My driver's side cover came off (as I am now driving on a high-speed interstate) and I am going to have the dealer attempt to fix it during my first service visit (21K miles) in a couple weeks.

Enjoy!

 

I'm not having issues with Key Fob reception on my '23 D90S but figured I would ask a Keyless Entry usability question here instead of starting another Keyless thread. I am unable to unlock the passenger side door after unlocking the driver's door with keyless entry when I have the 2-stage unlocking selection set to yes in the vehicle set up menu. Pushing the button twice on the outside driver's door handle does not unlock the passenger side door. It appears the only way to unlock the passenger side is to push the unlock button twice on the fob. This eliminates the usefulness of keyless entry if you have a passenger. Since my Wife drives the car mostly, I would prefer the passenger door remained locked on the first press since she works late at night and don't want someone able to open the passenger door if she doesn't want them to. Does anyone know if it is possible to open the passenger door with a second Keyless entry press?

 

When you say ‘second Keyless entry press’, are you referring to the button on the door handle? If so, that is not possible. Pressing it once, unlocks it. Pressing it again, locks it. With ‘Two Stage locking’, one press on the unlock button on the key fob, unlocks the drivers door. A second press, unlocks the remaining doors. Using the key fob to lock, one press locks all the doors, a second press within a couple seconds activates the horn, although at a muted tone, not a full on horn beep, to let you know the vehicle has been locked. I do this as I’m walking away, as it lets me know the vehicle is locked without looking over my shoulder to see the lights flash.

 

Thanks WTFChuck, I figured that's how it works. The Wife is used to just throwing the fob in her purse and using the keyless entry by just pushing the button on the drivers door handle to lock/unlock the vehicle. It sounds like if she has a passenger, she will have to fish the fob out of her purse to open their door though. I know, first world problem.

 

Or else, as I do for my passengers, once I press the door handle button and open my door, then I press the unlock button on the inner door panel. And yes, first world problems, but every vehicle has its shortcomings and it becomes routine after awhile where I do it without giving it a thought. Just as I disable auto start/stop after pressing the engine start button.

 

Thanks for posting the info on the TSB! I thought it was something I was going to have to live with.... Really, my only complaint on the Defender.

 

That sounds like the best answer. Thanks!