Replacing the battery in your Lexus key fob is a relatively simple task that can be completed in a matter of minutes. By following a few simple steps, you can save yourself the time and expense of taking your car to the dealership.
First, you will need to gather a few tools. These include a small Phillips head screwdriver, a new CR2032 battery, and a soft cloth. Once you have gathered your tools, you can begin the process of replacing the battery.
To begin, use the screwdriver to remove the two screws that hold the key fob together. Once the screws are removed, carefully pry the two halves of the key fob apart. Be careful not to damage the delicate electronic components inside. Once the key fob is open, you will see the old battery. Use the soft cloth to remove the old battery and insert the new one. Be sure to insert the new battery with the positive side facing up. Once the new battery is in place, carefully snap the two halves of the key fob back together and tighten the screws.
Gathering Materials
Before embarking on the task of replacing the battery in your Lexus key fob, it’s imperative to ensure that you have gathered all the necessary materials. This will help streamline the process and prevent any unnecessary interruptions.
Essential Tools and Components:
| Item | Purpose |
|---|---|
| New CR2025 or CR2032 battery | The lithium cell that powers the key fob’s electronic components |
| Small flathead screwdriver or plastic prying tool | For gently prying open the key fob casing without damaging it |
| Soft cloth or paper towel | To protect the key fob from scratches during handling |
In addition to the above, it’s advisable to have a well-lit and clean workspace to facilitate the process and prevent any misplacement of small parts.
Safety Precautions:
Before handling the key fob, ensure that it is out of range from the vehicle to prevent accidental locking or unlocking.
Locating the Release Button
Finding the release button is crucial for removing the old battery. Here’s a detailed guide to locate and operate the release button:
1. Insert the key into the ignition: Insert your Lexus key into the ignition switch and turn it to the “Off” position.
2. Press the key release button: On most Lexus key fobs, the key release button is located on the side of the fob. It’s typically a small, circular button.
- **For key fobs with integrated keys:** The key release button is usually found on the back of the fob. Press and hold this button while simultaneously pulling the key out of the fob.
- **For key fobs with separate keys:** The key release button is typically located on the side of the fob, near the top. Press and hold this button while simultaneously sliding the key out of the fob.
3. Pull out the key blade: Once the key release button is pressed, gently pull the key blade out of the fob. The key blade usually slides out smoothly without requiring excessive force.
4. Separate the fob: With the key blade removed, the key fob can now be separated into two parts. One part will contain the buttons and electronics, while the other will house the battery.
Removing the Key
To begin, you’ll need to remove the physical key from the fob. This usually involves pressing a small button on the side or back of the fob and pulling the key out.
If your fob has a separate metal key, simply pull it out. However, if the key is not removable, you’ll need to locate a small notch or indentation on the fob. Use a small screwdriver or key to gently pry the metal key out of the fob.
| Type of Key Fob | Key Removal Method |
|---|---|
| Flip Key Fob | Press the release button on the side of the fob and pull out the metal key. |
| Smart Key Fob | Locate the notch or indentation on the fob and pry the metal key out using a screwdriver or key. |
| Proximity Key Fob | The key is not removable. |
Opening the Fob
1. Locate the small notch or button on the side of the key fob. This button may be concealed by a small rubber flap.
2. Using a small flathead screwdriver or a key, gently pry open the notch or press the button to release the key fob’s housing.
3. Carefully separate the two halves of the key fob housing. The circuit board, containing the battery, will be visible inside.
Replacing the Battery
4. Identify the old battery and gently pry it out of its compartment using a plastic spudger or a small flathead screwdriver. Note the orientation of the positive (+) and negative (-) terminals of the battery.
| Battery Type | Lexus Key Fob Model |
|---|---|
| CR2025 | LS 2005-2018, GS 2005-2018, RX 2003-2018 |
| CR2032 | ES 2006-2015, IS 2006-2013, GX 2003-2017 |
5. Insert the new battery into the compartment, ensuring the positive (+) and negative (-) terminals align correctly.
6. Gently press down on the battery until it clicks into place.
7. Reassemble the key fob housing by snapping the two halves back together.
8. Check if the key fob is functioning properly by pressing the buttons and testing the remote features.
Identifying the Battery
The Lexus key fob typically contains a CR2025 or CR2032 coin cell battery. To identify the battery, follow these steps:
- Step 1: Locate the release button on the key fob. This button is usually found on the side or back of the fob.
- Step 2: Press and hold the release button while gently pulling the key fob apart.
- Step 3: Once the key fob is open, look for a small, round battery. This is the battery that needs to be replaced.
- Step 4: Note the markings on the battery. This will indicate the battery type (e.g., CR2025 or CR2032).
- Step 5: If the battery markings are not visible, refer to the Lexus owner’s manual for the specific battery type used in your key fob. Alternatively, you can take the key fob to a retailer or automotive technician who can identify the battery for you.
| Battery Type | Lexus Models |
|---|---|
| CR2025 | ES, GX, LS, RX, UX |
| CR2032 | IS, LC, LX, RC, NX |
Removing the Old Battery
1. **Locate the battery compartment.** It is usually found on the back of the key fob, under a small cover.
2. **Use a small screwdriver or other tool to pry open the cover.** Be careful not to damage the key fob.
3. **Remove the old battery.** It is usually held in place by a small clip or spring.
4. **Clean the battery compartment.** Use a cotton swab dipped in rubbing alcohol to remove any dirt or corrosion from the contacts.
5. **Insert the new battery.** The positive (+) side of the battery should face up.
6. **Put the cover back on.** Make sure it is securely in place.
Caution:
- Do not use a metal object to remove the battery, as this could cause a short circuit.
- Do not use a rechargeable battery, as this could damage the key fob.
- If you have trouble removing the old battery, take the key fob to a locksmith or automotive technician.
Inserting the New Battery
After retrieving the key fob battery, it’s time to place the new battery in its designated location. To do this, follow these steps:
-
Identify the battery terminal markings: The battery terminals are usually marked with “+” and “-“. Ensure that the battery is oriented correctly before inserting it.
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Align the battery terminals: Place the battery into the fob with the positive terminal facing the “+” marking and the negative terminal facing the “-” marking.
-
Gently press down on the battery: Once the battery is aligned, gently press down on it until it fits snugly into place.
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Secure the battery: Some key fobs have a small plastic clip or latch that secures the battery. If your fob has one, ensure that it is properly secured to keep the battery in place.
-
Double-check the battery orientation: Once the battery is inserted, double-check that it is properly aligned and securely fastened.
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Reassemble the key fob: Once the battery is securely in place, reassemble the key fob by snapping the housing back together.
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Test the key fob: Press a button on the key fob to ensure that it is functioning correctly. If the button doesn’t respond, recheck the battery orientation and the fob’s assembly.
- Locate the key fob release button. It is usually a small button on the side or back of the fob.
- Press the button and pull the key out.
- Remove the old battery. It is usually held in place by a small clip.
- Insert the new battery with the positive (+) side facing up.
- Slide the key back into the fob.
- Press the buttons on the fob to test it.
Here’s a table summarizing the steps:
| Step | Action |
|---|---|
| 1 | Orient the battery correctly. |
| 2 | Align the battery terminals. |
| 3 | Gently press down on the battery. |
| 4 | Secure the battery with a clip or latch. |
| 5 | Double-check the battery orientation. |
| 6 | Reassemble the key fob. |
| 7 | Test the key fob. |
Closing the Fob
Secure the Battery
Once the new battery is in place, carefully align the battery door with the fob’s body. Ensure it fits snugly and doesn’t protrude.
Next, gently press down on the battery door until it secures into place with a soft click. Make sure it’s securely fastened to prevent it from falling out during use.
Double-check that the battery door is fully closed by applying a bit of pressure to ensure a tight fit. Avoid excessive force, as it can damage the door or the fob itself.
Finally, inspect the fob to make sure all components are properly aligned and functioning correctly. If you encounter any issues, repeat the steps or consult the vehicle’s user manual for additional assistance.
Replacing the Key
To change the battery in your Lexus key fob, you will need to follow these steps:
1. Locate the key release button.
This button is usually located on the back of the key fob. Press the button to release the key.
2. Remove the key from the key fob.
Gently pull the key out of the key fob.
3. Find the battery compartment.
The battery compartment is usually located on the back of the key fob. It is held closed by a small screw.
4. Remove the screw.
Use a small Phillips head screwdriver to remove the screw that holds the battery compartment closed.
5. Open the battery compartment.
Gently pry open the battery compartment with your fingernail or a small flathead screwdriver.
6. Remove the old battery.
Use your fingernail or a small pair of tweezers to remove the old battery from the compartment.
7. Insert the new battery.
Insert the new battery into the compartment with the positive (+) side facing up. Make sure that the battery is securely in place.
8. Close the battery compartment.
Gently press down on the battery compartment to close it. Make sure that the lid is securely closed.
9. Replace the screw.
Use the screwdriver to replace the screw that holds the battery compartment closed. Tighten the screw until it is snug, but do not overtighten it.
10. Insert the key into the key fob.
Push the key into the key fob until it clicks into place.
Your Lexus key fob is now ready to use.
Testing the Fob
To determine if the battery in your Lexus key fob needs to be replaced, perform the following tests:
1. Lock and Unlock Test
Stand within a short distance of your Lexus vehicle. Press the lock button on the fob once. The car should lock. Press the unlock button. The car should unlock. If either button fails to respond, the battery may be weak.
2. Trunk Release Test
Locate the trunk release button on the fob. Press it. If the trunk opens, the battery is likely still functioning. If the trunk does not open, the battery may need to be replaced.
3. Panic Button Test
Find the panic button on the fob, typically indicated by a red symbol. Press and hold it for a few seconds. The car should emit a loud, continuous honking sound and flashing lights. If this does not occur, the battery may be too weak to activate the panic function.
4. Key Blade Emergency Use
If the fob is completely unresponsive, you can still manually open the car using the key blade hidden inside the fob. To release the blade, press the small button on the side of the fob and pull the blade out.
5. Visual Inspection
If you notice any signs of corrosion, damage, or deformation on the fob, this could also indicate a need for battery replacement.
How to Change Battery in Lexus Key Fob
Replacing the battery in a Lexus key fob is a straightforward process that can be completed in a few simple steps:
People Also Ask
How often should I change the battery in my Lexus key fob?
The battery in a Lexus key fob typically lasts for 2-3 years. However, the battery life may vary depending on the frequency of use and the climate in which you live.
What type of battery does my Lexus key fob use?
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. The process is simple and takes only a few minutes.
