Is there ever a need to re-pair a key fob to a vehicle?
They should never get dropped right? eBay key has worked for I think 2 yrs now just fine.
It even has a Maxell Rechargeable inside!

So last week it just stopped locking/unlocking. Still works in the ignition.
Battery shows 3.3v but I don't know if it is just not sending a signal anymore?
Can IIDtool check this - whether a key is "talking" to a vehicle? OEM fob still functions fine.

Maybe its just not worth any detective work - I could just swap the 14yr old OEM key board to the eBay shell using the new Maxell battery.
And just get a new eBay key again. Cheap enough.

Guess I just answered my own post haha

 

Does the red led come on when you depress the button?

 

I see no LED anywhere - do you mean an LED in the fob? or in the LR3 dash?
All buttons have a normal positive feel

 

Key fob should have a red led when you depress button

 

I can inspect again tonight
but not sure the eBay key ever had one

 

There is no LED on the LR3 key FOB.

 

Sounds like the rechargeable battery in the ebay key was junk and died on you.

 

It is measuring 3.3v tho

Can I piggyback a 2nd 3v battery (parallel) to test this w/o damaging the potentially already damaged circuitry?

edit: Probably not a good idea - I suppose the $15 I spent on the fob was cheap for 2yr use - rinse and repeat

 

This...

 

You can get a "dry joint" on the key fob circuit board, worth taking to bits and checking although a new battery is cheap enough