If your Infiniti key fob has stopped working or you know it’s time to replace its battery, you might be wondering how to open it safely without damaging the case or internal electronics. Knowing how to open an Infiniti key fob is a simple DIY skill that can extend your fob’s life, help you avoid dealership fees, and save time. This article will guide you through every step, including how to identify your fob type, what tools you need, model-specific opening instructions, and troubleshooting tips for common issues.
Important Safety and Warranty Information
Before You Begin
Handling an Infiniti key fob requires care and attention to avoid damaging its delicate internal components. Key fobs contain sensitive electronics that can be harmed if not handled properly. Always use minimal force when opening the fob, as excessive prying can crack the plastic casing or damage the circuit board inside.
Warranty Considerations
Replacing the battery in your key fob is considered routine maintenance and won’t void your warranty when done correctly. However, it’s important to note that any damage to the case or internal electronics caused by improper handling is typically not covered by the warranty. By following proper procedures and being gentle, you can safely open the fob without risking unnecessary damage.
Identify Your Infiniti Key Fob Type
Infiniti has produced several styles of key fobs over the years. Knowing your exact model is the first step, as the disassembly procedures vary.
- Standard Intelligent Key (most common): These are oval or rectangular and include lock, unlock, panic, and sometimes remote start buttons. They have an emergency key that slides out from the side or bottom.
- Flip Key Fob: These older or base-model fobs have a key blade that flips out from the side. The case splits along a central seam.
- Concealed Emergency Key Fob: In the latest design, the physical key is tucked inside the body and released using a small latch.
Check which style your fob matches so you can follow the correct instructions in the next section.
Tools and Preparation
Opening an Infiniti key fob requires just a few basic items:
- Small flathead screwdriver or, ideally, a plastic pry tool meant for electronics. These minimize the risk of scratching your fob.
- Replacement battery (type will be identified after opening; common types include CR2032 and CR2025).
Before starting, set up your workspace:
- Choose a clean, flat, well-lit surface such as a table or countertop.
- Lay down a soft cloth or microfiber towel. This helps prevent scratches and keeps tiny parts from rolling away.
Methods to Follow: How to Open an Infiniti Key Fob
Method 1: Opening a Standard Intelligent Key
- Release the mechanical emergency key
On the back of the fob, slide the small latch to release the emergency key. Remove it completely from the case. - Locate the prying slots
You’ll find small indents inside the space where the key was stored. - Insert your tool
Gently place the tip of your flathead screwdriver or pry tool into one slot and softly twist to start creating a seam gap. - Work along the seam
Move the tool carefully along the fob’s edge to pop the internal clips that hold the two halves together. Take your time and avoid forcing it.
Method 2: Opening a Flip Key Fob
- Extend the metal key blade
Flip out the blade to access any seams along the fob. - Find the opening seam or notch
Look for a notch or pronounced seam on the casing’s side. - Pry open the shell
Place your tool in the notch and twist gently. These casings can be tightly clipped; steady, gentle pressure is best.
Method 3: Opening a Fob with a Concealed Key
- Remove the hidden key
Release and slide out the emergency key using the latch. - Locate the opening slot
There should be a small slot or hole accessible where you can use the tip of the emergency key or a screwdriver. - Pop open the case
Press into the slot firmly but gently—the case should separate without too much force.
Battery Identification, Removal, and Handling
Identifying the Battery Type
Once you’ve opened the case, you’ll notice a small, round battery seated in its holder. Carefully examine the battery type, which will be labeled with a code such as CR2032 or CR2025. This code is essential for purchasing the correct replacement. If you haven’t already bought a new battery, ensure you match this code exactly for compatibility.
Removing the Old Battery
To remove the old battery, use a non-metallic tool, such as a toothpick or your fingernail, to gently pry it out of the holder. Avoid using metallic tools, as these can cause short circuits or damage sensitive components inside the fob. Handle the process delicately to ensure no other elements are disturbed during removal.
Handling and Installing the New Battery
When you’re ready to install the new battery, avoid touching its flat surfaces directly. The natural oils from your fingers can reduce its efficiency and shorten its lifespan. Instead, hold the battery by its edges. Carefully place it into the holder with the positive (+) side facing up. Refer to the diagram inside the fob or align it based on the old battery’s orientation to ensure proper installation.
Reassembly and Function Check
Reassembling the Key Fob
Carefully align both halves of the fob casing. Ensure all edges are properly matched before proceeding. Once aligned, press the two halves together firmly until you hear a satisfying click. Check the seam all around to confirm it is flush and free of gaps.
Reattaching the Emergency Key
If you removed an emergency key during disassembly, slide it back into its designated slot. Push it in gently but firmly until it clicks into place, confirming it is secure.
Testing the Key Fob’s Functionality
Before putting the fob fully into use, verify that each button—lock, unlock, trunk, and panic—is functioning as expected. Stand near your vehicle and press each button in turn. Watch for your car’s response, such as the doors locking or unlocking, or observe the indicator light on the fob flashing with each press.
Troubleshooting Common Issues
- Can’t open the case: Double-check that you’re prying in the correct spot. Apply gentle but steady pressure. Forcing the case can crack it or break the clips.
- A clip breaks: If a small internal plastic clip snaps, the case may still close tightly. If it feels loose, you can use a tiny dab of super glue on a non-essential seam—just be very careful not to get glue on the electronics.
- Fob doesn’t work after reassembly: Open the fob again and ensure the battery is correct and installed with the positive side up. Clean the contacts inside if there’s any dust or residue, and make sure they’re not bent or misaligned.
When to Replace the Shell vs. the Entire Fob
Replacing the Shell
If your fob’s plastic casing is cracked or worn but the buttons and electronic components are still functioning properly, replacing the shell is a cost-effective solution. Aftermarket replacement shells are readily available online and are much cheaper than purchasing an entirely new fob. This option allows you to preserve the original electronics while refreshing the outer casing for durability and usability.
Replacing the Entire Fob
A full fob replacement is only necessary if the circuit board inside is damaged—this often occurs due to water exposure—or if none of the buttons work, even after replacing the battery. Keep in mind that getting a new fob requires reprogramming, which typically involves visiting a dealership or seeking assistance from a specialized automotive locksmith. While this option is more expensive, it ensures the proper functioning of your key fob.
Safe Disposal and Recycling of Old Batteries
Coin-style batteries, like those found in key fobs, contain materials that shouldn’t end up in landfills or the regular household trash. Always recycle your old battery. Most electronics stores, supermarkets, and municipal centers offer recycling drop-off bins specifically for these batteries.
Frequently Asked Questions
How Long Do Key Fob Batteries Typically Last?
Key fob batteries generally last between 1 to 3 years, depending on usage and the type of battery used. Regularly replacing the battery when it shows signs of low power can ensure the key fob operates efficiently.
Can I Replace My Key Fob Battery Myself?
Yes, most key fob batteries can be replaced at home with a small screwdriver and the correct replacement battery. Always consult your key fob’s manual for specific instructions before proceeding.
What Should I Do If My Key Fob Stops Working After Replacing The Battery?
If your key fob is unresponsive after a battery replacement, double-check that the battery is correctly inserted and that the contacts are clean. If issues persist, the key fob may need reprogramming or professional inspection.
Where Can I Purchase Replacement Batteries For My Key Fob?
Replacement batteries for key fobs are widely available at electronics stores, supermarkets, and online retailers. Ensure you purchase the correct battery size specified in your key fob’s manual.
Is It Necessary To Reprogram My Key Fob After Replacing The Battery?
Most key fobs don’t require reprogramming after a battery replacement. However, if your key fob does not function afterward, consult your vehicle’s manual or contact a professional for assistance.
Conclusion
Opening your Infiniti key fob doesn’t have to be intimidating or expensive. With the right tools, a gentle approach, and careful attention to detail, you can complete this task in minutes at home. Learning how to open an Infiniti Key Fob empowers you to handle routine maintenance yourself and avoid unnecessary dealership visits. Follow each step closely, and don’t hesitate to consult a professional if you run into problems you can’t resolve.