How to Replace Cadillac Key Fob Battery

Without the battery in the key fob, you may find yourself locked out of your car. Your Cadillac will give you a warning if the battery is starting to get low. You will see the warning on the DIC (Driver Information Center) on the dash just in front of your steering wheel. When you see the battery low indicator, change the battery right away to avoid problems. Make sure you do not touch any of the wiring that is under the battery when you do change it. Your static electricity can damage the transmitter.

The replacement battery information is on the back of your key fob, but most of them need a CR2032 battery, which are some of the most common button type batteries. It is always a good idea to carry a spare battery with you.


  • Flathead screwdriver
  • New battery


  1. Use your flathead screwdriver on the back of the transmitter to pry open the back. You will see a notch for the screwdriver head. Gently pry it open and take the back off the transmitter.
  2. Use your finger to remove the battery. Pull it up. Never use the screwdriver or anything that can damage the transmitter.
  3. Replace the battery with your new one.
  4. Snap the back onto the transmitter.
  5. Try your transmitter to make sure that it is working properly. You should not need to reprogram the fob for a battery change.

If your key fob doesn't have the notch to insert the screwdriver into, you need to get between the two halves and gently pry them apart in order to replace the battery. In that case, make sure that you don't damage the halves, or you risk the connection security.

Even if you don't see a warning on the DIC that tells you the battery is low, keep an eye out for other signs that your battery may be failing. If you are struggling to unlock or lock the vehicle while the fob is in your purse or pocket, this can be a sign that the battery is starting to go.

In some cases, the DIC may give you a message that no key has been found. In that case, you may need to replace the fob. Your fob may be covered under your manufacturer’s warranty, so check with your local dealership for more information.