Replacing the battery in your Chrysler 300 key fob might seem like a straightforward task, but what happens when your key fob stops working after a battery change? You’re not alone. Many Chrysler 300 owners encounter this issue, and luckily, it’s often resolvable without a costly trip to the dealership. This guide will walk you through the process of Chrysler 300 Key Fob Battery Replacement, troubleshooting common problems, and getting your remote working again.
Understanding Your Chrysler 300 Key Fob Battery
Before diving into the replacement process, it’s crucial to understand the type of battery your Chrysler 300 key fob uses. Most Chrysler 300 models utilize CR2016 batteries. These are 3V lithium coin cell batteries, widely available at drugstores, supermarkets, and online retailers. Using the correct battery type is essential for optimal key fob performance. Always double-check your owner’s manual or the markings inside your key fob to confirm the exact battery specification for your model year.
Step-by-Step Guide to Chrysler 300 Key Fob Battery Replacement
Replacing the battery in your Chrysler 300 key fob is a simple procedure you can typically do at home with minimal tools. Here’s a step-by-step guide:
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Gather Your Tools and Battery: You’ll need a small flathead screwdriver or a similar thin tool to open the key fob casing, and of course, the correct CR2016 battery (or as specified for your model).
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Open the Key Fob Casing: Locate the small notch on your key fob. Gently insert the flathead screwdriver into this notch and twist carefully to pry the two halves of the key fob casing apart. Avoid using excessive force to prevent damage to the plastic.
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Access the Battery Compartment: Once the casing is open, you’ll see the circuit board and the battery compartment. The battery is usually held in place by small clips.
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Remove the Old Battery: Carefully note the orientation of the old battery (+ side up or down). Use your fingertip or the tip of the screwdriver to gently pry the old battery out of its compartment.
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Insert the New Battery: Install the new CR2016 battery, ensuring it’s placed in the correct orientation as the old one. Push it down gently until it clicks into place.
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Reassemble the Key Fob: Carefully align the two halves of the key fob casing and press them firmly together until they snap back into place. Ensure the casing is securely closed.
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Test Your Key Fob: Try using your key fob to lock and unlock your Chrysler 300, activate the panic button, and start the vehicle remotely (if equipped).
Chrysler 300 key fob components disassembled for battery replacement
Troubleshooting: Chrysler 300 Key Fob Not Working After Battery Replacement
If your Chrysler 300 key fob is still not working after replacing the battery, don’t panic. Here are some common issues and troubleshooting steps:
Common Issues After Battery Replacement
- Incorrect Battery Installation: Double-check that you’ve installed the new battery with the correct polarity (+ and – sides oriented correctly). Even a new battery won’t work if installed backward.
- Battery Type Mismatch: Ensure you’ve used the correct battery type (CR2016 or the type specified for your model). Using an incorrect battery type can lead to malfunction or reduced performance.
- Loose Battery Contacts: Sometimes, the metal contacts in the battery compartment can become slightly bent or loose. Gently ensure they are making good contact with the battery.
- Key Fob Synchronization/Programming Issue: In some cases, after a battery change, the key fob might lose synchronization with your Chrysler 300’s system, requiring reprogramming.
Reprogramming Your Chrysler 300 Key Fob
For many Chrysler 300 models, especially those with an EVIC (Electronic Vehicle Information Center), you can attempt to reprogram the key fob yourself. Here’s a general procedure based on user experiences and owner’s manual information:
- Enter the Vehicle and Close All Doors: Ensure all doors are closed properly.
- Turn Ignition to ‘ON’ Position (Without Starting Engine): Turn the ignition key to the “ON” position, where the dashboard lights illuminate, but do not start the engine.
- Navigate EVIC Menu to ‘Program Remote’ (If Equipped): Use the steering wheel controls to navigate the EVIC menu. Look for options like “Vehicle Settings,” “Personal Settings,” or “Program Remote.” The exact menu names might vary slightly depending on your model year.
- Follow On-Screen Prompts: The EVIC should display instructions, typically prompting you to “Press Lock and Unlock buttons, then press Unlock button.”
- Press Buttons on Key Fob as Instructed: Simultaneously press and hold the Lock and Unlock buttons on your key fob for a few seconds, then release and immediately press the Unlock button as instructed.
- Listen for a Chime: The vehicle should chime to indicate successful programming.
- Test the Key Fob: Try using all the functions of your key fob (lock, unlock, panic, remote start) to ensure it’s working correctly.
Important Notes on Reprogramming:
- EVIC Requirement: This method typically works for Chrysler 300 models equipped with an EVIC. If your model lacks EVIC, the procedure might be different or require professional programming.
- Simultaneous Button Press: The timing and simultaneous pressing of buttons can be crucial. Refer to your owner’s manual for the precise sequence for your specific model year.
- Single Remote Programming: The EVIC programming method is often intended for programming a single remote. If you have multiple remotes, you might need to program them all during the same session.
When to Visit a Dealership or Automotive Locksmith
If you’ve tried battery replacement and self-reprogramming and your Chrysler 300 key fob still isn’t working, it might be time to seek professional help.
- No EVIC or Programming Fails: If your Chrysler 300 doesn’t have EVIC or the self-programming procedure fails, a dealership or a qualified automotive locksmith will have the diagnostic tools and equipment to reprogram your key fob.
- Suspect Key Fob Damage: If you suspect your key fob might be physically damaged or malfunctioning beyond just a battery issue, professional diagnosis is recommended.
- Lost All Key Fobs: If you’ve lost all your key fobs, programming a new one will require specialized equipment and is best handled by professionals.
Visiting a dealership will ensure compatibility and proper programming, although it might be a more expensive option. Automotive locksmiths often provide more affordable and convenient key fob programming services.
Preventing Future Key Fob Issues
To minimize key fob problems in the future:
- Timely Battery Replacement: Replace your key fob battery proactively when you notice the range decreasing or the low battery indicator appearing on your dashboard (if equipped).
- Handle Key Fob with Care: Avoid dropping your key fob or exposing it to extreme temperatures or moisture.
- Consider a Spare Key Fob: Having a spare, programmed key fob can be a lifesaver if one fails. Program a spare key fob as soon as possible to avoid being stranded if your primary fob malfunctions.
Conclusion
Replacing the battery in your Chrysler 300 key fob is generally a simple DIY task. However, if you encounter issues after battery replacement, troubleshooting common problems and attempting reprogramming can often resolve the issue. By following this guide, you can confidently handle your Chrysler 300 key fob battery replacement and ensure you’re always ready to hit the road. Remember, if DIY troubleshooting doesn’t work, professional help from a dealership or locksmith is readily available to get your key fob functioning again.
