One 2032 battery is required for both the Kia Smart Key and the regular Kia key fob. You can buy this type of battery at most major department stores, automotive stores, or online.
In This Article...
How is the battery in a Kia key fob changed?
A 3 volt lithium battery, which is often capable of powering the remote key or smart key for several years, is used.
The remote key or smart key cover can be carefully pried open by inserting a thin tool into the slot.
Change the battery with a fresh one (CR2032). Verify the battery location before replacing the battery.
In order to replace a remote key or smart key, Kia advises going to a licensed Kia dealer or service provider.
Although the remote key or smart key is made to last for years without issue, it can break if it is exposed to dampness.
or static discharge. Kia advises contacting a certified Kia dealer or repair center if you’re unsure how to use or replace the battery.
A remote key or smart key that is using the incorrect battery may not work properly. Use the appropriate batteries, of course.
Avoid dropping, getting it wet, or exposing the remote key or smart key to heat or sunlight to prevent damage.
Both the environment and human health can be harmed by improper battery disposal.
How can I determine which key fob battery I require?
Batteries are used by key fobs. While the key fob battery is not required to start your car, it is required for any keyless entry or remote functions that come with your vehicle. The battery must be replaced when it runs out of power. Following these instructions will enable you to replace the battery in your key fob:
Open Your Key Remote Fob
Typically, a micro screwdriver or the yellow watch opening tool shown below are needed to open the key fob. To open the remote control, use the flat head or the yellow tool, or use the micro screwdriver to remove any screws from the key fob’s rear.
Determine the Battery Type
Look at the battery within the remote after opening the key fob; it will typically have numbers printed on it, such as 2032, 2025, or 2016. Make sure to decide whether the battery should have its positive side facing up or down.
Replace the Battery
Replace the old battery with the new one now. Place the battery properly, making sure the positive side is pointing in the appropriate direction. Usually, the key fob’s interior will indicate which side should face the battery’s positive side. Test the remote buttons after carefully putting the key fob back together; some remotes include tiny LEDs that turn red when a button is pressed. If the red light comes on, the plug is in properly.
Can a CR2032 be used in place of a CR2025?
The thickness of the two battery kinds would be the obvious distinction. The CR2025 is 2.5mm thick compared to 3.2mm for the CR2032. The capacity (mAh) of the CR2032 to deliver electricity to the load is higher since it is 0.7mm thicker than the CR2025. Standard CR2032 batteries have a nominal capacity of 225mAh, while typical CR2025 batteries have a nominal capacity of just 160mAh. The thinner battery could not last as long and might need to be changed more frequently because of its lower capacity.
Which key fob battery is the best?
Comparison chart for the top 2025 batteries for car key fobs
- The top spot. 2 Pack of Duracell D2025 Procell Lithium Batteries, 3V.
- Second place. Four-pack of Duracell Specialty 2025 Lithium Coin Batteries with Baby Secure, 3V.
- 3rd position. Lithium 3V CR2025 Coin Battery Pack for Watches and Torches, 2 Pack.
- Fourth place.
- 5th position.
Are the batteries in all key fobs the same?
A key fob is one of several electrical components in contemporary vehicles. When you press the button to open the door, a transmitter electronic chip inside of it broadcasts the signal. A small battery powers the key fob. In a smart key fob, the battery may last for 2-3 years, whereas it may last for 4-6 years in a standard key fob.
The smart key fob also contains a receiver, so when it is inside or close to the car, it must connect with the car more frequently, which accounts for the disparity. A key fob battery is often not rechargeable and needs to be changed when it runs out of power.
What symptoms indicate a weak fob battery? The transmitter’s range decreases as the fob battery gets weaker. This implies that for the key fob to operate, you must be close to the vehicle. If the smart key fob battery is low, a vehicle that has a push-button start may not always detect a smart key fob that is in your pocket or handbag. Key fob battery low may also appear as a warning on the driver’s display in some vehicles.
If the fob battery is low, will the car start? The security (immobilizer) chip inside the fob operates without a battery in the majority of cars, but only when it is quite close to the vehicle. Therefore, even if the fob’s battery is poor, the car should still start. To start the engine, you might need to place the smart fob into a certain slot or hold it nearer to the “Start” button. For instructions, consult your owner’s handbook. It’s also possible to store a traditional mechanical key within the fob. If the main battery of a car is exhausted or the fob battery runs out, this key can open the driver’s door.
How can the battery in the fob be tested? Many key fobs have a tiny LED light that turns on when one of the buttons on the fob is pressed. If the LED light is completely dark, either the fob’s battery is dead or the fob is experiencing some other issue. You can use a voltmeter to check the voltage of the fob battery if you already have it out. The battery has a mark indicating the voltage.
This battery is defective since it displays 2.858 Volts. A reliable 3-Volt battery should register somewhat higher than 3 Volts.
A 3-Volt battery is weak if it displays less than 3 Volts. As an illustration, the 3-Volt battery in the picture displays just 2.8 Volts; it is defective and needs to be replaced.
What kind of battery is needed for a key fob? The batteries used by various automobiles vary. Three-volt batteries come in two main varieties: CR2025 and CR2032. The owner’s manual will list the precise type. These kinds of batteries are available at any dealership or in any electronics store.
The battery for the fob can be changed easily. To find the instructions and safety measures, consult the owner’s manual. There are a ton of how-to videos on YouTube as well. A tiny flat or Phillips screwdriver can be required.
For instance, we used a little flat screwdriver to pry open the key fob in the top photo at the locations specified in the owner’s manual. Take care; the plastic tabs holding the fob’s components together are fragile and are likely to break. There may be small screws or other easily lost items in some automobiles.
Keep an eye out for the battery’s installation when replacing it. The “+” symbol is written on the one side of the battery. The new battery must be installed exactly the same way in order for it to function.
Visit your dealer; they should be able to change the key fob battery for you if you are not mechanically inclined. Most of the time, it only takes a few minutes. The rates we received from different sellers were all within $10. If only the fob battery needs to be changed, a key fob doesn’t require any programming.
If I change the battery, do I need to reprogram my key fob?
A remote key fob needs to be associated with your vehicle particularly in order to be secure.
This stops people who drive the same make and model of automobile as you from using their remote to access your car. You’ll need to reprogram the fob if changing the batteries has erased this connection or if it was somehow disrupted in order for it to once again recognize your automobile.
Standard programming sequence
Your key fob can typically be reconfigured by following this typical procedure:
Instead of starting and then returning to the locked position, turn the key into the run position. Repeat this multiple times.
You’ll typically hear a chime or other sound when you’ve cycled the key enough times. At that point, you can push the lock or unlock button on your key fob to hear another chime.
Can a dead key fob battery still start a car?
- On your key fob’s back, search for a little sliding button. You can slide the key fob cover off or click a button to do so. To get it to release, you might need to use your fingernail and a little force.
- Use the mechanical key to unlock the door after you get it. If your door doesn’t have a key slot, it’s likely concealed beneath the handle cover. To access the key slot, carefully remove the handle cover by using the key.
Now that you’re inside, here’s how to start the car with a dead key fob:
- Close the key fob after inserting the mechanical key once more.
- Press the START button with the key fob. Instead than pressing the button with your finger as usual, push the key fob against it. Many manufacturers utilize this backup device to make sure the car can start even if the key fob is dead.
- Some vehicles have a secret key fob slot that can be used to start the engine. For instance, the backup slot is located inside the cup holder in some Ford models. Your fob will fit perfectly in the slot. Use the push button start as usual after inserting the dead key fob into the holder.
- Check the steering column for a physical key slot if neither of these approaches succeeds (some Mazda models have this feature). To start the car, place the mechanical key within the keyhole.
How is the battery changed in a 2017 Kia key fob?
The mechanical key that pops out of the conventional Kia key fob when a button is pressed is utilized to start the engine. Although you can still start the engine and enter the car if the key fob battery runs out, it is undoubtedly more convenient to remotely unlock and lock the vehicle. The following are the steps for changing a normal Kia key fob battery:
- Place the key fob so that its front is facing down and smooth surface.
- On the side of the key, across from the key fob, look for a little slot. Once you’ve found it, carefully insert the flathead screwdriver into the slot and wedge it there until the case releases.
- Remove the plastic casing gently, taking care not to scratch it or harm any internal parts.
- Replace the old battery with a fresh one by removing the old one.
- Reposition the plastic case and gently press the two fragments together to reunite them.