there are 3 solder points where the battery holds down
usually soldering them again fixes the issue

 

I've had my spare remote/key stored in a desk drawer for the last 38 months. Never used them. Just for curiousity sake, I got them out a few minutes ago.
I tried them both and they still work fine.

 

It's when you only use one of them, and leave the other in the drawer.

 

Yes, both the FOBs and Keys require no programming – the vehicle is programmed to recognize their signals as valid. The programming for a key is a DIY procedure. The programming for a FOB is not.

It is always interesting how two people can read the same post and come to vastly different opinions. I gathered from post #16, but did not elaborate, that somehow his vehicle had been reprogrammed by a dealer/mechanic unbeknownst to him and the programmer wrongly assumed there was only one FOB. Thus leaving the other FOB not recognized by the vehicle. A lot of assumptions in there I know, but that is where I was. A symptom of web communications, we all have to take some guesses and assumptions.

I had never heard of this re-syncing before and did not find it in the Owners Manual. I did find the re-syncing in the Factory Service Manual, but there it states the process is automatic and requires nothing more than using the FOB.

Found on page 13-39 of the 2009 FSM, quotes below:
Rolling Code
The Keyless Entry System uses rolling code technology. Rolling code technology prevents anyone from recording the message sent from the transmitter and using the message in order to gain entry to the vehicle. The term ”rolling code” refers to the way that the Keyless Entry System sends and receives the signals. The transmitter sends the signal in a different order each time. The transmitter and the remote control door lock receiver (RCDLR) are synchronized to the appropriate order. If a programmed transmitter sends a signal that is not in the order that the RCDLR expects, then the transmitter is out of synchronization. This occurs after 256 presses of a transmitter button when it is out of range of the Vehicle. [Emphasis added]

Automatic Synchronization
The keyless entry transmitters do not require a manual synchronization procedure. If needed, the transmitters automatically re-synchronize when any button on the transmitter is pressed within range of the vehicle. The transmitter will operate normally after the automatic synchronization.

 

This is why I don't post often on forums. I can't imagine where in my post you would think a dealer did anything to my car that I didn't know about. I was wrong saying the fob lost it's programing. Obviously the problem is the car doesn't recognize it any longer. I used one fob for years before bringing the other one out of my safe where I store all my extra keys. The second fob would not work. You could press buttons all day long and the car doesn't recognize it. There is no way to fix it yourself. The dealer hooked up his scan tool to the car and programed it to recognize the remotes. They have both worked fine for over a year since with no problems.

 

Others were just pointing out the fact that the car is reprogrammed, not the remotes as you had noted. No biggie.

Glad you got it all sorted out - it's great having two remotes working.

If you get a chance, throw up a picture or two of the towing mechanism you have setup.

 

The reason I think someone did something to your vehicle that you did not know about is the following:
I know a bit about how the system works and the only logical and common way for the vehicle to become un-programmed to your second FOB is the second scenario below:

Scenario 1
The vehicle lost memory on its own for only one of your two FOBs, conveniently the FOB you were not actively using – this is just too coincidental for me to entertain. A very select portion of a specific module’s (RCDLR) memory would have to become corrupt for this to occur. In my opinion highly unlikely.

Scenario 2
The only logical event is for the module to loose all memory, how that happened is conjecture of course. The mechanic could have been doing a preventative software update that included the BCM and/or the RCDLR. You seem to have good karma with mechanics doing nice things for you – the free programming of the FOBs! At the other end of the spectrum, the mechanic could have done something very stupid that required reprogramming, so stupid the dealership did not want you to know about it. I imagine the list could go on and on.

“All things being equal, the simplest solution tends to be the best one.”
Paraphrase of Ockham’s Razor.

Sorry Harm got caught up in my attempt to correct the misinformation in the subsequent post.