So i was golfing and when I finished I got to my car (2019 Base Manual) the FOB would not do anything. I used the key to open the hatch and as soon as that happened the horn started beeping loudly I then used the pull cord to open the door and the beeping stopped I got in and tried to start the car and got a message "No Key Fob detected", it was in my hand. I then got a knife and opened the FOB and took the battery out and rubbed it and checked it and put it back in then pointed the FOB at the car which was 90 feet away and pressed the unlock button and the lights came on. I then started the car and went home. The next morning I changed the battery in the FOB I was using and got my spare FOB and went to the car. It would not do anything neither would the spare FOB. I went back into my house and opened the FOB again to make sure I put the battery in correctly. I then took both FOB's back to the car and the FOB spare was in my hand so i pushed the unlock and the car unlocked. I then drove to the dealer and they tried everything with both FOB's but both worked fine and said that they would be unable to check anything unless it was in the failure mode. So any ideas?
That is my story so any help would be appreciated.
Wayne

 

I know you changed the batteries but are you sure they are fresh. Simple first step. Good luck.

 

This.
Sometimes you might (underline the word “might”) have to reprogram a fob after a battery change. I’ve never had to do that, but sometimes you might.

Go to 10 minute mark of video at link:

 

Great video thanks.

 

The car is programmed to the FOB. The FOB is not programmed. There has been no proven report from any user on this forum that a battery change in a FOB required a FOB to go through the program action.

Also, his statement of the FOB has to be programmed is incorrect. Rick has made incorrect videos before.

In the comments:
[quote]

Harald Loer

Rick. Disappointed that you and Chuck showed the INCORRECT way to change the fob battery! For the 2017 Corvette, on page 32 of the Owners Manual, it clearly shows using the emergency key to open the fob case. You and Chuck just showed a good way for owners to slice open their hands using a screwdriver! The Owners Manual also CAUTIONS against touching “any of the CIRCUITRY on the transmitter”. My wife and I love watching your videos, but you really messed this one up.
[quote]

Elmer

 

Fob batteries seem to last about 3 years whether they are in the primary fob or a spare.

There is NO programming, memory, or intelligence in the fob.

"Programming" the fob is really pairing the fob to the car - all of the configuration is in the car. (Same concept as pairing ear buds to your phone or tablet). The fob will work with NO battery if it is in the steering column slot if it has been paired to the car.

Be sure to buy fresh batteries that read at least 3 volts. The fobs seem to be really sensitive to low voltage issues.

BTW - batteries generate voltage by a chemical reaction. Chemical reactions are usually faster at higher temps.
So - holding a battery in your hand or putting the fob in your pocket may restore function temporarily if the battery is weak or depleted.

Ron

 

DO NOT USE INFO IN THIS VIDEO!

A small percentage is correct, the vast majority is NOT!

Fobs NEVER randomly become "unprogrammed" and fob battery changes have never been documented to make the car "forget" the fob.

 

great video!

 

Thanks everyone who replied. All comments and video's were helpful. I got one FOB working so far so I am off to get some new CR2032 batteries and will start both FOB's with new fresh batteries.
Wayne