Changing the battery in your Lexus key fob is a simple task that can be done in a few minutes. It is important to keep a fresh battery in your key fob, as a dead battery can prevent your car from starting. This article will provide you with step-by-step instructions on how to change the battery in your Lexus key fob.
To begin, you will need to gather the following materials:
Once you have gathered your materials, you can begin the battery replacement process. First, locate the small screw on the back of your key fob. Use the screwdriver to remove the screw, and then carefully pry open the key fob. You will see the old battery inside. Gently remove the old battery and replace it with the new battery. Make sure that the positive side of the battery is facing up.
Once the new battery is in place, carefully snap the key fob back together. Make sure that the screw is tightened securely. Once the key fob is closed, test it to make sure that it is working properly. Check to see if the lights on the key fob are working and if the car starts when you press the unlock button. If everything is working properly, then you have successfully replaced the battery in your Lexus key fob.
Identifying the Correct Battery
Identifying the correct battery for your Lexus key fob is crucial to ensure proper functionality. Here’s a step-by-step guide to assist you in locating and selecting the appropriate battery:
Locate the Key Fob Manual
The first step is to find the key fob manual. This manual usually comes with the vehicle upon purchase and contains specific instructions on battery replacement. It will provide details such as the battery type, size, and voltage required for your particular key fob model.
Identify the Battery Type
Once you have located the key fob manual, refer to the section on battery replacement. It will specify the battery type, which is typically a lithium-ion battery. The manual will also indicate the battery size, such as CR2025, CR2032, or CR2016, as well as the voltage rating, which is usually 3 volts.
Check the Key Fob’s Housing
If you do not have access to the key fob manual, you can also check the key fob’s housing for any markings or engravings. Some key fobs may have the battery type printed directly on the back or bottom of the casing, providing you with the necessary information.
Removing the Old Battery
Step 1: Gather your tools. You will need a small Phillips head screwdriver, a flathead screwdriver, and a new battery for your key fob.
Step 2: Remove the old battery. This is the most difficult step in the process, as the battery is held in place by a small spring. Be careful not to lose the spring when you remove the battery.
Step 3: Use the flathead screwdriver to pry open the key fob. Be careful not to damage the key fob.
Step 4: Use the Phillips head screwdriver to remove the screws that hold the battery in place.
Step 5: Remove the old battery from the key fob.
Step 6: Insert the new battery into the key fob. Make sure that the positive and negative terminals of the battery are facing the correct way.
Step 7: Replace the screws that hold the battery in place.
Step 8: Close the key fob.
Step 9: Test the key fob to make sure that it is working properly.
Battery Replacement Tips
Here are a few tips to help you replace the battery in your Lexus key fob:
- Use a new battery. Do not use an old or used battery, as it may not work properly.
- Make sure that the positive and negative terminals of the battery are facing the correct way. If the battery is installed incorrectly, it will not work properly.
- Be careful not to lose the spring that holds the battery in place. If you lose the spring, the battery will not be held in place and may fall out of the key fob.
- Test the key fob to make sure that it is working properly before you put it back together.
Battery Replacement Table
| Battery Type | Lexus Model | Years |
|—|—|—|
| CR2032 | ES300 | 2002-2005 |
| CR2025 | GX470 | 2003-2009 |
| CR2016 | IS300 | 2001-2005 |
| CR2025 | LS430 | 2001-2006 |
| CR2025 | RX330 | 2004-2009 |
| CR2032 | SC430 | 2002-2010 |
Replacing the Key Cover
The key cover on your Lexus key fob protects the internal components from damage and wear. Over time, the cover may become scratched, faded, or cracked. If this happens, you can easily replace the key cover at home. Here’s what you’ll need:
- A new key cover
- A small screwdriver
Follow these steps to replace the key cover:
- Remove the key blade from the key fob. This is usually done by pressing a small button or lever on the side of the fob and pulling the blade out.
- Use a small screwdriver to gently pry the key cover off of the key fob. Be careful not to damage the fob or the cover.
- Align the new key cover with the key fob. Make sure the buttons and other features on the cover line up with the corresponding components on the fob.
- Press the key cover into place until it snaps. Make sure the cover is secure and does not move around.
- Reinsert the key blade into the fob.
Your key fob now has a new key cover, and it’s ready to use!
| Tools | Materials |
|---|---|
| Small screwdriver | New key cover |
Testing the Key Fob Functionality
Before replacing the battery in your Lexus key fob, it’s crucial to verify that it’s actually the battery causing the issue. Here’s a step-by-step guide to test the functionality of your key fob:
1. Check the Physical Condition
Inspect the key fob for any physical damage, such as cracks or dents. Examine the buttons to ensure they are intact and not jammed.
2. Test the Buttons
Press each button on the key fob firmly. Listen for a distinct click and observe any response from your Lexus vehicle. If some or all buttons seem unresponsive, it could indicate an issue with the fob itself.
3. Check the Lights
Many Lexus key fobs have LED lights that illuminate when a button is pressed. If the lights are not functioning, it may point to a battery problem.
4. Test the Proximity Function
If your key fob has a proximity function, stand close to your Lexus vehicle and attempt to unlock it. If the vehicle fails to unlock, it could indicate a weak battery or an issue with the proximity sensor.
5. Inspect the Battery Contacts
Using a magnifying glass or a small flashlight, inspect the metal contact points inside the key fob’s battery compartment. Ensure that the contacts are clean and free of corrosion or debris. Any accumulation of dirt or rust can interfere with battery connectivity.
| Symptoms of a Weak Battery |
|---|
| Intermittent or delayed response when pressing buttons |
| Reduced range for key fob operation |
| Dim or flickering LED lights |
| Failure of proximity function |
Consideration for Different Lexus Models
The type of battery required for a Lexus key fob can vary depending on the model and year of the vehicle. Here is a brief guide to the different types of batteries used in Lexus key fobs:
| Lexus Model | Battery Type | |
|---|---|---|
| CT (2011-2017) | CR1632 | |
| ES | (2013-2018) | CR2025 |
| (2019-present) | CR1620 | |
| GX | (2010-2019) | CR2025 |
| (2020-present) | CR1620 | |
| IS | (2014-2020) | CR2016 |
| (2021-present) | CR1620 | |
| LC | (2017-2020) | CR2016 |
| (2021-present) | CR1620 | |
| LS | (2013-2017) | CR1620 |
| (2018-present) | CR2032 | |
| NX | (2015-2021) | CR2016 |
| (2022-present) | CR1620 | |
| RC | (2015-2020) | CR2016 |
| (2021-present) | CR1620 | |
| RX | (2016-2022) | CR2016 |
| (2023-present) | CR1620 | |
| UX (2019-present) | CR1620 | |
Battery Life and Replacement Frequency
The battery in your Lexus key fob can last anywhere from three to five years, depending on how often you use it. If you use your key fob frequently, you may need to replace the battery sooner. If you notice that your key fob is not working as well as it used to, it may be time to replace the battery.
When to Replace the Battery
There are a few signs that indicate that it may be time to replace the battery in your Lexus key fob. These signs include:
- The key fob is not working as well as it used to.
- The key fob is not able to unlock the car.
- The key fob is not able to start the car.
- The key fob is not able to lock the car.
- The key fob is not able to open the trunk.
- The key fob is not able to close the windows.
- The key fob is not able to turn on the lights.
How to Replace the Battery
Replacing the battery in your Lexus key fob is a simple process. Here are the steps on how to do it:
| Step | Description |
|---|---|
| 1 | Remove the key from the key fob. |
| 2 | Locate the small screw on the back of the key fob. |
| 3 | Use a small screwdriver to remove the screw. |
| 4 | Carefully open the key fob. |
| 5 | Locate the battery. |
| 6 | Use a small screwdriver to remove the battery. |
| 7 | Insert the new battery into the key fob. Make sure that the positive (+) side of the battery is facing up. |
| 8 | Carefully close the key fob. |
| 9 | Insert the screw into the back of the key fob. |
| 10 | Tighten the screw. |
| 11 | Test the key fob to make sure that it is working properly. |
Troubleshooting Common Issues
The Key Fob Is Not Working
If the key fob is not working, there are a few possible causes. First, check the battery and make sure it is properly installed. If the battery is dead, replace it with a new one. If the battery is not the issue, try resetting the key fob. To do this, press and hold the lock and unlock buttons simultaneously for 10 seconds. Release the buttons and then press the lock button again. If the key fob still does not work, it may need to be reprogrammed. You can do this yourself or take it to a dealership.
The Key Fob Is Not Unlocking the Doors
If the key fob is not unlocking the doors, there are a few possible causes. First, make sure that the key fob is in range of the vehicle. If it is, try pressing the unlock button multiple times. If the key fob still does not work, try resetting it. To do this, press and hold the lock and unlock buttons simultaneously for 10 seconds. Release the buttons and then press the unlock button again. If the key fob still does not work, it may need to be reprogrammed. You can do this yourself or take it to a dealership.
The Key Fob Is Not Locking the Doors
If the key fob is not locking the doors, there are a few possible causes. First, make sure that the key fob is in range of the vehicle. If it is, try pressing the lock button multiple times. If the key fob still does not work, try resetting it. To do this, press and hold the lock and unlock buttons simultaneously for 10 seconds. Release the buttons and then press the lock button again. If the key fob still does not work, it may need to be reprogrammed. You can do this yourself or take it to a dealership.
The Key Fob Is Not Starting the Car
If the key fob is not starting the car, there are a few possible causes. First, make sure that the key fob is in range of the vehicle. If it is, try pressing the start button multiple times. If the key fob still does not work, try resetting it. To do this, press and hold the lock and unlock buttons simultaneously for 10 seconds. Release the buttons and then press the start button again. If the key fob still does not work, it may need to be reprogrammed. You can do this yourself or take it to a dealership.
Safety Precautions
When changing the battery in your Lexus key fob, be sure to follow these safety precautions:
1. Park your car in a safe location and turn off the engine.
2. Remove the key from the ignition.
3. Use a small screwdriver or other tool to gently pry open the key fob.
4. Locate the battery and remove it from the key fob.
5. Insert the new battery into the key fob, making sure to align the positive and negative terminals correctly.
6. Close the key fob and press the buttons to make sure it works properly.
9. Additional Safety Precautions
In addition to the general safety precautions listed above, there are a few additional precautions you should take when changing the battery in your Lexus key fob:
- Do not use a metal tool to pry open the key fob, as this could damage the fob.
- Do not touch the battery with your bare hands, as this could cause a short circuit.
- Do not dispose of the old battery in the trash. Instead, recycle it at a local battery recycling center.
- If you have any questions about changing the battery in your Lexus key fob, consult your owner’s manual or a qualified mechanic.
| Battery Type | Lexus Model |
|---|---|
| CR2032 | ES350, GS350, GX460, IS250, LS460, LX570, RX350, SC430 |
| CR2025 | ES300h, GX470, IS350, LS600h, RX400h, SC400 |
How to Change the Battery in a Lexus Key Fob
Replacing the battery in your Lexus key fob is a simple task that can be completed in just a few minutes. Here are the steps you’ll need to follow:
- Gather your materials. You will need a new CR2032 battery and a small screwdriver or other tool to pry open the key fob.
- Locate the battery compartment. The battery compartment is usually located on the back of the key fob. It may be covered by a small plastic cover.
- Pry open the compartment. Use the screwdriver or other tool to gently pry open the battery compartment cover.
- Remove the old battery. Use your fingers or a pair of tweezers to remove the old battery from the compartment.
- Insert the new battery. Place the new battery in the compartment with the positive (+) side facing up.
- Close the compartment. Press the battery compartment cover back into place until it clicks shut.
- Test the key fob. Press the buttons on the key fob to make sure that it is working properly.
People Also Ask About How to Change Battery in Lexus Key Fob
How often should I change the battery in my Lexus key fob?
You should change the battery in your Lexus key fob every 2-3 years, or sooner if you notice that the buttons are not working properly.
What type of battery does my Lexus key fob use?
Most Lexus key fobs use a CR2032 battery.
Can I change the battery in my Lexus key fob myself?
Yes, you can change the battery in your Lexus key fob yourself. It is a simple task that can be completed in just a few minutes.
