Changed Key fob Battery - Now doesn't work!

[SwissCheeseHead]

As the title states, I changed the battery in my key fob, and now the only way to start the car is to press the start button with the fob. None of the keyless entry functions work. This happened one time prior and I went to the dealership to get it re-linked with the car, at the tune of $50 for 5 minutes of something...

Anyone know what I can do to re-sync it? It's really frustrating!!!

2011 M37x

Thanks

[paranoidjack]

anyone-know-how-to-program-a-new-intell ... 02366.html

[satown210]

You sure you put the battery in correct side up and the battery is good?

[SwissCheeseHead]

You sure you put the battery in correct side up and the battery is good?

Yes. Even bought a pack of 2025s and a different brand (Duracell) of 2032 and still won''t work. Trying to avoid having to go to the dealer every time the fob battery needs to get changed. The other key fob shows low battery, so I'm sure that one will lose sync too when I change it out.

[Frog]

Most dealerships change the fob battery for free. Always done that and never had a problem

[SwissCheeseHead]

Mine definitely charges at least $50 at least per visit, if not per key. My second fob is running low on battery (but still somewhat works) so pretty soon here, I will have to change that battery as well.

Has anyone ever seen a message on the screen saying "pairing with key" or something to that effect? Anyone knows what that means?

[emm3seven]

Has anyone ever seen a message on the screen saying "pairing with key" or something to that effect? Anyone knows what that means?

My guess is you're thinking of this message:

Connection with the key has been done


As to the explanation for that message, from page 3-28/3-29 of the 2011 M owner's manual:

SETTING MEMORY FUNCTION
The status of the following settings can be linked to the Intelligent Key and the memorized settings can be available for each Intelligent Key.
● Climate control system
● Navigation system (if so equipped)
● Audio system

To use the memory function, lock the doors with the Intelligent Key that is linked to the settings.

To enable the memorized settings:

1. Carry the Intelligent Key that is linked to the settings, and unlock the doors by pushing the driver’s door handle request button on the switch or UNLOCK Intelligent Key.

2. Push the ignition switch to the “ON” position. “Connection with the key has been done” will be displayed on the screen and the memorized settings are available (only when a new Intelligent Key is used).

My interpretation of this poorly worded manual entry is that you'll see this message when recalling memorized settings from an Intelligent Key. I think it may show up if, for example, you have your settings associated with Key 1, and your partner's settings associated with Key 2, and your partner gets in and drives it after you've been driving it. E.g. unlocking with Key 2 after driving it with Key 1 would generate that message (assuming there are memorized settings associated with both keys).

[SwissCheeseHead]

Has anyone ever seen a message on the screen saying "pairing with key" or something to that effect? Anyone knows what that means?

My guess is you're thinking of this message:

Connection with the key has been done


As to the explanation for that message, from page 3-28/3-29 of the 2011 M owner's manual:

SETTING MEMORY FUNCTION
The status of the following settings can be linked to the Intelligent Key and the memorized settings can be available for each Intelligent Key.
● Climate control system
● Navigation system (if so equipped)
● Audio system

To use the memory function, lock the doors with the Intelligent Key that is linked to the settings.

To enable the memorized settings:

1. Carry the Intelligent Key that is linked to the settings, and unlock the doors by pushing the driver’s door handle request button on the switch or UNLOCK Intelligent Key.

2. Push the ignition switch to the “ON” position. “Connection with the key has been done” will be displayed on the screen and the memorized settings are available (only when a new Intelligent Key is used).

My interpretation of this poorly worded manual entry is that you'll see this message when recalling memorized settings from an Intelligent Key. I think it may show up if, for example, you have your settings associated with Key 1, and your partner's settings associated with Key 2, and your partner gets in and drives it after you've been driving it. E.g. unlocking with Key 2 after driving it with Key 1 would generate that message (assuming there are memorized settings associated with both keys).

I see. That makes complete sense. Thank you.

I replaced the battery in my second key fob, while in the car, with it running. It works like normal. Same 2032 battery that I tried in my working/now not working fob from earlier. wtf?

I've been driving with both fobs located in the the car in hope that something would magically sync up, but no luck so far. I'm going to see if a Nissan dealer can get the fob working again before I try the Infiniti dealer.

[cliffyk]

THis happened to me at my first battery change--after the initial panic I opened the fob up and cleaned he battery and contacts with one of these (mine came from Radio Shack 10 years ago; but unfortunately they are no longer with us) all was well--the current draw on these devices is so low that just the thinnest layer of oxidation mucks things up...