no it shifts in all gears except has issues in 2nd gear but will get into 3rd and beyond with no problem
computer showed 2nd gear is faulty

 

First thing to look at is the front tires. Need to be same size. right down to the tread depth. I had two front tires same brand, style and size and would not shift past 3rd gear in standard mode. Shifted fine in sport. I found that I had two different tire diameters on the front. One tire with 5/32" tread depth and the other was a spare and had approximately 10/32" tread depth. I swapped out the 10/32" tire with the mate to the 5/32" tire and the transmission shifted perfectly. The computers check wheel speeds and compare to each other and they must be within specification or you'll run into problems similar to what your experiencing.
Get the front tires matching first. Then I'd move onto having the trans fluid & filter changed along with the mechatronic pass through at the same time. Your trans shop should know what that is. Have the transmission adaptations cleared afterwards and see how it acts. If its still not shifting correctly, you may have a shift solenoid plugged or going bad which is fairly common on the 6HP26 transmissions. If the transmission shifts and performs fine in sport mode (no slipping, clunking, etc) I doubt you need to rebuild the trans, but that's what trans shops do. Rebuild/replace transmissions. I'd pop for a set of shift solenoids before a trans rebuild. Truth is they are more likely to be your issue and if they rebuild the trans and find that the solenoids are bad afterwards, you'll most likely have to pay them to go back inside to replace them. Ford solenoids will work in these transmissions. Ford has a license to manufacture their own equivalent to the German ZF 6HP26. I have a set of 2006 Navigator solenoids in my LR3 and they work just fine.

 

I have a 2006 LR3 and only when I turn on the lights at night, the automatic trans stops working.

 

As far as messing with the adaptions I have seen that suggested as a last resort but never as a troubleshooting method.

With mileage that low the first thing you should do is replace fluid/pan/filter. If you can do that yourself and you still have a problem, at worst you'll probably have to drain it again, saving the fluid, and replace solenoids. Refill with same new fluid. Doing the fluid and filter first is a good stopgap and intro to the LR3 trans if you end up having to replace solenoids. Note their location. Not an crazy hard thing to do with a bit of confidence. If you're going to a shop have them do all of these things at once otherwise you'll be paying them to do it twice.

 

Geeze has anybody seen this before?

My first guess is...Have you recently replaced any of the lights? Are they within OEM specs? Test battery voltage with lights on/off. My first thought is that that's certainly an issue with voltage and you have a battery issue or one that is directly related to the type of lights.

 

Curious what "stops working" means specifically... maybe it's that RF Capacitor thing that connects to the tranny.

 

I have to set it to manual transmission when I switch on the lights is what I mean. I will try to check the bulbs and voltage

 

Or else what? What does the tranny stop doing? Does the vehicle not GO? or is the shifting wonky?

 

My thought was the trans RF capacitor also, which fortunately unlike the LR4, the LR3 does not need to operate so you can unplug it to see how things work. But I never heard of interior lamps causing issues unless the entire shifter assembly is shot.

 

Have you checked the linkage on the side of the box as this is a known problem