Have you ever experienced the frustration of an Infiniti key fob suddenly refusing to work right after replacing its battery? You’re not alone. Many Infiniti owners find themselves locked out or unable to start their vehicles after a seemingly straightforward battery change. This issue can be surprisingly common, and thankfully, often has simple solutions. As your trusted auto repair experts at keyfobx.com, we’re here to guide you through troubleshooting and resolving this problem, ensuring you get back on the road quickly.
Common Reasons Your Infiniti Key Fob Might Fail After Battery Replacement
Before assuming the worst, consider these common culprits behind a malfunctioning key fob after a battery swap:
-
Dead or Old “New” Batteries: Just because a battery is new in packaging doesn’t guarantee it’s fully charged. As the original poster on the forum discovered, sometimes “new” batteries can be old stock and already depleted. Always test new batteries with a battery tester if you have one, or try batteries from a fresh, recently purchased pack.
-
Incorrect Battery Type: Key fobs require specific battery types to function correctly. While the original forum post highlights the successful use of a CR2032 instead of a CR2025, always double-check your Infiniti owner’s manual for the recommended battery type. Using an incompatible battery, even if it fits, can lead to performance issues or failure.
-
Battery Polarity Issues: Ensure the battery is installed with the correct polarity (+ and – sides aligned as indicated in the key fob casing). Incorrect polarity will prevent the key fob from powering on.
-
Key Fob Not Reset or Resynchronized: In some cases, the key fob might need a reset or resynchronization with your Infiniti after a battery change. This process can vary depending on your model, but often involves a simple procedure you can perform yourself.
Troubleshooting Steps to Revive Your Infiniti Key Fob
Here’s a step-by-step approach to diagnose and fix your Infiniti key fob:
-
Verify Battery Type and Polarity: Open your key fob and confirm you’re using the correct battery type (usually CR2025 or CR2032). Double-check the polarity (+/-) before closing the fob.
-
Test with Fresh Batteries: If possible, use batteries from a brand new pack. If you have a battery tester, check the voltage of the “new” batteries you initially used. Try both CR2025 and CR2032 if your manual permits CR2032, as the forum user found CR2032 to be effective.
-
Clean Battery Contacts: Sometimes, oxidation or dirt on the battery contacts inside the key fob can hinder conductivity. Gently clean the contacts with a cotton swab and a tiny bit of isopropyl alcohol.
-
Key Fob Resynchronization/Reset: Consult your Infiniti owner’s manual for key fob resynchronization or reset procedures. This might involve pressing buttons in a specific sequence while near or inside your vehicle.
-
Check for Key Fob Damage: Inspect the key fob for any signs of physical damage, especially if it has been dropped or exposed to moisture. Damage can sometimes disrupt the internal circuitry.
When to Seek Professional Help
If you’ve tried these troubleshooting steps and your Infiniti key fob still isn’t working, it might be time to consult a professional. There could be more complex issues, such as:
- Key Fob Programming Issues: The key fob might have lost its programming and needs to be reprogrammed to your vehicle by a dealership or a qualified locksmith.
- Receiver Problems in the Vehicle: In rare cases, the issue might not be with the key fob itself but with the receiver unit in your Infiniti that communicates with the key fob.
For expert assistance with Infiniti key fob issues, especially after battery changes, trust the team at keyfobx.com. We can provide further diagnostics, programming services, and replacement key fobs if necessary. Don’t let a non-working key fob leave you stranded – reach out to us for reliable solutions!
