Having trouble with your Chrysler key fob? A common issue many Chrysler owners face is a key fob that suddenly stops working or has a significantly reduced range. Often, the culprit is simply a dead battery. Before you rush to the dealership or spend money on a new key fob, you can easily try replacing the battery yourself. This guide will walk you through the steps on how to change your Chrysler key fob battery, potentially saving you time and money.
Understanding Your Chrysler Key Fob Battery
Before we get started, it’s important to understand the basics of your Chrysler key fob battery. Most Chrysler key fobs utilize coin-cell batteries, typically CR2032, CR2025, or CR2016. The specific type depends on your Chrysler model and the year of your key fob. Using the correct battery is crucial for proper function.
Identifying the Correct Battery Type
The first step is to determine what kind of battery your Chrysler key fob needs. Here’s how you can find out:
- Check your owner’s manual: Your Chrysler owner’s manual is the best resource for accurate information about your vehicle, including key fob battery type. Look for the section on “Keyless Entry” or “Remote Keyless Entry (RKE)”.
- Open your key fob: Carefully open your key fob (instructions below) and take a look at the battery currently inside. The battery type is usually printed directly on the battery itself.
- Online resources: Websites like keyfobx.com (where you are reading this!) or battery retailer websites often have battery finders where you can input your car’s year, make, and model to find the correct key fob battery.
Gathering the Necessary Tools
Changing your Chrysler key fob battery is a straightforward process that requires minimal tools. You’ll typically need:
- A new battery: Make sure you have the correct type of replacement battery for your key fob.
- A small flathead screwdriver or prying tool: This will be used to carefully open the key fob casing. A plastic trim tool is ideal to avoid scratches, but a small, thin flathead screwdriver will also work.
- A soft cloth (optional): To protect the key fob casing from scratches during the opening process.
Step-by-Step Guide to Changing Your Chrysler Key Fob Battery
Now, let’s get to the actual battery replacement. The exact steps may vary slightly depending on your specific Chrysler key fob design, but the general process is very similar for most models.
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Locate the notch or seam on your key fob: Examine your key fob closely. You should find a small notch or seam where the two halves of the casing meet. This is where you will insert your prying tool.
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Carefully pry open the key fob: Using your flathead screwdriver or prying tool, gently insert the tip into the notch or seam. Twist or pry carefully to start separating the two halves of the key fob casing. Work your way around the seam, gently prying until the case is open. Avoid using excessive force to prevent damage to the casing.
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Identify the battery location and polarity: Once the key fob is open, you’ll see the battery compartment. Take note of the battery’s orientation – how the positive (+) and negative (-) sides are positioned. This is crucial for installing the new battery correctly. Often, the positive side (+) will be facing upwards.
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Remove the old battery: Gently remove the old battery. You might be able to pry it out with your fingertip or use the tip of your screwdriver to carefully nudge it out.
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Install the new battery: Place the new battery into the compartment, ensuring the polarity matches the orientation you noted earlier. The positive (+) side should be in the correct position as per the markings in the compartment or your initial observation.
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Reassemble the key fob: Carefully align the two halves of the key fob casing and press them firmly back together until they snap securely into place. Ensure there are no gaps and the case is properly closed.
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Test your key fob: Try using your key fob to lock and unlock your Chrysler, or activate other functions like the panic button. If it works, you’ve successfully replaced the battery!
What to Do If Your Key Fob Doesn’t Work After Battery Change (Troubleshooting)
In most cases, replacing the battery will restore your Chrysler key fob’s functionality. However, sometimes you might encounter issues even after a battery change. Here are some troubleshooting steps:
Check Battery Polarity and Type Again
Double-check that you installed the new battery with the correct polarity and that you used the correct battery type. Incorrect polarity or battery type are common reasons for a key fob not working after battery replacement.
Clean Battery Contacts
Inspect the metal contacts in the key fob battery compartment. If they look corroded or dirty, gently clean them with a cotton swab and a bit of rubbing alcohol. This can improve the electrical connection.
Key Fob Reprogramming (EVIC Procedure)
In some rare cases, especially with older Chrysler models, the key fob might lose its programming after battery replacement. Chrysler vehicles equipped with an Electronic Vehicle Information Center (EVIC) often allow for key fob reprogramming without a trip to the dealership.
According to discussions in online forums, like the one we are referencing, some Chrysler owners have successfully reprogrammed their key fobs using the EVIC. While the exact steps can vary slightly between models and years, the general procedure often involves navigating the EVIC menu to find a “Program Remote” or similar option. You may be prompted to press certain buttons on the key fob in a specific sequence.
Important Note: The effectiveness of EVIC reprogramming for a single non-working key fob after battery replacement is debated, as seen in the original forum. Some users suggest it’s primarily for adding additional remotes when you already have a working one. However, it’s worth trying the EVIC programming procedure outlined in your owner’s manual or searching online for specific instructions for your Chrysler model.
If your owner’s manual describes an EVIC programming procedure, it might involve steps similar to these (consult your manual for precise instructions):
- Enter your vehicle and close all doors.
- Turn the ignition to the “ON” position (without starting the engine).
- Navigate through the EVIC menu using the buttons on your steering wheel or dashboard until you find the “Program Remote” or “Train Remote” option.
- Select “YES” to enter programming mode.
- The EVIC may display a prompt like “PRESS REMOTE LOCK & UNLOCK THEN PRESS UNLOCK”. (This is where the forum users found the instructions unclear).
- Following the prompt (and referring to your owner’s manual for clarity), attempt to press the Lock and Unlock buttons simultaneously, followed by the Unlock button, as indicated. You may need to hold these buttons for a short period.
- If successful, the car may chime or provide another indication that the key fob has been programmed.
- Test the key fob functions.
Caveat: As mentioned in the forum, the wording of the EVIC programming instructions can be confusing. Experiment carefully and refer to your owner’s manual for the most accurate procedure. If the EVIC method doesn’t work, you might need professional programming.
When to Visit a Dealership or Automotive Locksmith
If you’ve tried replacing the battery, checked the polarity and contacts, attempted EVIC reprogramming (if applicable), and your Chrysler key fob still isn’t working, it might be time to seek professional help.
- Dealership: Your local Chrysler dealership will have the tools and expertise to diagnose key fob issues and reprogram your key fob if necessary. They can also sell you a replacement key fob if yours is damaged or faulty.
- Automotive Locksmith: Automotive locksmiths are specialists in car key and remote issues. They can often provide key fob programming and replacement services at a potentially lower cost than a dealership. Ensure you choose a reputable locksmith experienced with Chrysler vehicles.
Going to the dealership might be necessary, especially if:
- You only have one key fob and it’s not working.
- Your Chrysler model requires specialized programming tools that are not accessible to the average owner.
- You suspect there might be an issue with the key fob itself, beyond just the battery.
Conclusion
Changing your Chrysler key fob battery is usually a simple DIY task that can save you inconvenience and expense. By following these steps and troubleshooting tips, you can often get your key fob working again quickly. However, if you encounter persistent problems, don’t hesitate to seek professional assistance from a Chrysler dealership or a qualified automotive locksmith. Keeping your key fob in good working order is essential for vehicle security and convenience.
