Key Fob Weirdness

[Toby]

I just went through a key fob battery replacement exercise. New Duracell 2025 did NOT work! Rayovac 2025 did.

I did the same a couple of years ago. The new Duracell did not work in the Leaf key fob but was sufficient enough for a digital tire pressure gauge. Different manufacturers tweak their designs for specific applications. The best batteries for key fobs seem to be Energizers.

Buy batteries from stores that have a rapid turnover. The last ones you want are those that have sat in storage for a few years.

One more thing. Random radio waves can interfere with key fobs. If your key fob acts up every time you visit a particular location something is generating RF noise.

 

[Bombastinator2]

Amazing how these posts get off topic so quickly. Started off discussing key fob batteries, and got moved off to 12 volts. Doesn't anyone pay attention? At any rate, I note that it was mentioned that fob batteries were being replaced with 2025's. Why don't you put in a 2035? Fits perfectly, and lasts much longer.

The question was why the weird behavior of the fob was happening. I was told if it wasn’t the fob it might be the 12v. So I was wondering if I had to replace the 12v which one I should get? So still the original question

I think you mean a 2032 battery and it is slightly thicker than the 2025, .7mm, but I'm sure should work and if you say it fits perfectly I'll take your word for it.

I did recently get a warning on the dash that it was time to replace the fob battery in my 2022 SV, which was a little over a year old with light usage, and thought about using one of the 2032's I had available, but also had a 2025 so went ahead with it. Like you say, the 2032 will last longer and of course is the same voltage. I always check a new battery with a volt/ohm meter before replacing.

I've been using the Sunbeam brand 2032 battery sold at the Dollar Tree Stores for many years and have never had a issue with them, 3pk for $1.25.

 

[Bombastinator2]

I thought it was a 2032 at first too but I bought a 2025 and it worked. This doesn’t negate your statement. The first battery may have had problems

 

[Bombastinator2]

What year is your Leaf? Our 2014 definitely has a key slot, at least in the driver's door.
The coin batteries should last a long time, but I suppose it's possible to buy a dud. Were you rough when you snapped the key fob open and closed? I've seen them get damaged from aggressive prying.

I did find a single keyhole eventually in the drivers door handle. Only one on the car. I’ve never used it , never seen anyone use it.