Key fob batteries dying

Key fob batteries dying

Key fob battery died after 3 months. I went to the service center and they gave me two. They checked the voltage and installed one. I drove home and the fob was dead the next day. I installed the spare and it died in about an hour. I picked up the other fob and received a low battery warning as I backed it out of the garage. Something is weird. Any ideas? I have an appointment with the service center next week. Something is drawing down the batteries. I thought it may have been a faulty fob but both of them shouldn't be going bad at the same time.

lilbean | December 27, 2018

I think the batteries were old.

Triggerplz | December 27, 2018

I bought a few spares from Amazon I keep some in the Frunk and the house they are very inexpensive, I’ve never had a problem with the fob battery so far. I’ve had 2 yearly maintenance done at which time they changed both batteries

Passion2Fly | December 27, 2018

The battery replacements from the Service Center were really old. I had to buy new batteries and replace them again myself.
The most important thing is to measure the voltage of the replacement batteries and make sure that they read at least 3.1 Volts. 3.0 Volts is too low for a brand new batttery. It won’t last long...

JAnnen | December 27, 2018

robbetts5: Is you fob cold when you get the replace battery message?

Since I store my fob in a unheated mud room, the battery can get cold. When the fob is cold I get the replace battery message. After driving for 2 minutes with the fob in my packet, I can restart the car at my first red light, and the replace battery message will display briefly and then extinguish. My fob battery likes to be warm. If the temperature is below freezing at night, I know I will get the replace battery message in the morning.

I have thought of moving my key hook to a warmer part of the house, but I feel "It's working. Don't fix it."

robbetts5 | December 27, 2018

I keep our fobs in the house. So temperature is not the problem. Good idea though.

robbetts5 | December 29, 2018

Purchased new batteries. They tested at 3.2 volts. Replaced in both key fobs and let them set. After two hours, my key fob didn't unlock the car; my wife's did. I tested the battery in mine and it was at 2.02 volts. Something is drawing down the battery. Service center appointment on Thursday. Maybe they can figure it out.

jimglas | December 30, 2018

FWIW: My keyfob frunk button doesnt work. I will wait until i have a reason to go to the service center to sort it out

Passion2Fly | December 30, 2018

Probably and bad key fob... it happens...