How to Change the Battery in a Cadillac Key Fob

Cadillac key fob on. a center console 

Long gone are the days of unlocking and locking your car with a key. Nowadays, a remote key fob is entrusted with this task until the battery dies. Then it's back to the trusty old key to get into your vehicle.

Read on as we share how to change the battery in a Cadillac key fob, helping you avoid the inconvenience of having to resort to your vehicle's key, which is not much fun, especially when there's rain pouring down.

Importance of a Functional Key Fob

Besides the obvious inconvenience of not being able to use the remote unlock and lock function, your key fob is also responsible for gaining access to the liftgate or trunk of your Cadillac and for starting your vehicle without the need to remove it from your pocket or any bag while within its operational range.

Tools and Materials Needed

First, you will need a new battery. The replacement battery on current Cadillac models is a CR2032 battery. A small flathead screwdriver will also be needed to pry open the two halves of the key fob casing.

How to Change the Battery in a Cadillac Key Fob

Learning how to change the battery in a Cadillac key fob is not a difficult task and is easily achieved with just a little bit of guidance when it comes to the procedure.

Step 1: Prepare the Key Fob

Make sure you have the correct new replacement battery for your particular Cadillac model on hand, as well as your small flat screwdriver to open up the casing.

A good idea is to clean up the key fob to prevent any dirt from entering the electronics once it is opened. Place the key fob on a flat work surface to ensure that no key fob components fall out and get lost.

Step 2: Open the Key Fob

Look for the small release button located on the side of your Cadillac key fob case. Press this button to remove the metal emergency key. The emergency key must be removed to expose a small opening. Insert the small flathead screwdriver into that opening, and then the two halves of the casing can be carefully separated.

Step 3: Remove the Old Battery

The key fob has a circuit board on one side of the casing and the battery on the other half.
Simply pop the old battery up from its place. Your screwdriver may be needed to gently pry the old battery out.

Step 4: Insert the New Battery

Place the new CR2032 battery in its location, making sure it is seated with the positive side facing down.

Step 5: Reassemble the Key Fob

Clip the two halves of the Cadillac key fob case back together, replace the emergency key, and check that the key fob is back in working order.

Signs Your Cadillac Key Fob Battery Needs Replacement

Thankfully, your Cadillac key fob doesn't just suddenly stop working when the battery needs to be replaced; there are some signs to look out for that indicate that your Cadillac key fob battery needs replacement.

The locking or unlocking function does not respond and will only function when you are really close to your vehicle to lock or unlock it.

Similarly, a dying battery may also cause a delay or an inconsistent signal from your key fob to your car. This is typically noticed when trying to lock or unlock your car from a distance or when there are any objects between the key fob and the car.

The battery, when low, will cause trouble when trying to start your Cadillac with keyless start with several attempts before starting.

A dying battery may also result in the panic alarm not working when pressing the button.

Owners detecting any of these signs should immediately look at replacing the battery.

Troubleshooting Common Issues

Learning how to change the battery in a Cadillac key fob is a pretty straightforward task that should fix any non-locking/unlocking issues. But, as in life, sometimes we will have trouble.

So when faced with a Cadillac key fob that's just not playing ball even after battery replacement, it's maybe time to troubleshoot some other common issues.

Owners should check the key fob for any physical damage; a cracked casing may indicate possible damage to the small circuit board, or unbeknownst to you, the ingress of water may have damaged the electronics.

Try resetting the key fob back to its factory settings using the instructions in your Cadillac's owner's manual.

Other electronic devices, such as cell phones, charging devices, or even wireless headphones, can often cause signal interference, disabling the key fob's functioning.

Owners should test the functioning of the key fob by moving all these types of devices away from the key fob and vehicle.

If all these troubleshooting checks still don't help, it may be time to replace the key fob or seek professional help.

When to Seek Professional Help

Once you have exhausted all the troubleshooting remedies we have covered above, it may be time to seek professional help.

Signs You Should Visit a Dealership

When replacing the battery or even replacing the key fob still doesn't help the situation, it's time to get professionals to check out your Cadillac itself.

Your key fob may be sending out a signal, but your Cadillac is not able to receive the signal, which will require a visit to a certified Cadillac service center to fix.

Benefits of Professional Assistance

Rather than running around wasting time and money trying to fix the problem yourself, book your Cadillac into a Cadillac Certified Service Center, where the highly trained and knowledgeable technicians know best how to repair your vehicle using the latest Cadillac technology and genuine Cadillac parts.

With the benefit of Cadillac's advanced diagnostics and service expertise, your Cadillac's key fob issues will be fixed in no time. We will also teach you how to change the battery in a Cadillac key fob.

Get Your Cadillac Serviced at Colonial Cadillac

Colonial Cadillac is located in New London, CT. Our Cadillac dealership is committed to providing all our customers with an amazing customer experience, whether it's a new or pre-owned vehicle you are looking to purchase or making a booking for necessary scheduled maintenance.

Allow Colonial Cadillac's skilled and expert Cadillac-trained technicians to repair your vehicle and bring it back to top working condition.