Is your 2007 Nissan Maxima key fob suddenly not working? It can be a frustrating issue, especially when you’re left struggling to start your car or unlock your doors. Luckily, many key fob problems with the 2007 Nissan Maxima have simple solutions you can try at home before heading to a mechanic. This guide will walk you through troubleshooting two common key fob issues and getting you back on the road quickly.
Issue #1: “Invalid Key ID” or “No Key Detected” After Battery Change
Have you recently replaced the battery in your Nissan Maxima key fob only to be greeted with an “Invalid Key ID” or “No Key Detected” message? You might also notice that the door request buttons on your car handles are no longer responding. However, the key fob buttons themselves for remote locking/unlocking might still be functional. In this scenario, you can usually still start your 2007 Maxima by pressing the start button directly with the key fob or, on some models, by inserting it into an emergency start receptacle.
Solution for Issue #1: Key Fob Reprogramming
This issue often arises because the key fob needs to be resynchronized with your Nissan Maxima after a battery change. Here’s a simple reprogramming procedure to try:
- Remove the Backup Key: Take out the mechanical backup key from your key fob.
- Enter and Position the Key Fob: Get into your Nissan Maxima and keep the key fob inside the car.
- Cycle Ignition (Without Brake): Press the start button twice without pressing the brake pedal. This will cycle the ignition to the “ON” position.
- Exit with Backup Key: Get out of the car, leaving the key fob inside. Take the backup door key with you.
- Lock and Unlock Manually: Close the driver’s side door. Insert the backup door key into the door lock cylinder. Turn the key to the left to lock the door (you should hear the locking mechanism activate). Then, turn the key to the right to unlock the door (again, listen for the unlocking mechanism).
- Re-enter and Turn Off: Remove the backup key and get back into your Nissan Maxima. Press the start button one more time (again, without the brake pedal) to turn the ignition to the “OFF” position.
After completing these steps, the “Invalid key ID” or “No Key Detected” messages should be gone, and your key fob should be functioning normally again.
Issue #2: Remote Key Fob Buttons Not Working (Lock, Unlock, Trunk, Panic)
In contrast to the first issue, you might find that everything else works perfectly fine – your car starts, door request buttons work – except for the remote button functions on your key fob. This means the buttons for remote door lock, unlock, panic alarm, and remote trunk release (if equipped on your 2007 Nissan Maxima) are unresponsive.
Solution for Issue #2: ECU Reboot (Battery Disconnect)
This problem often indicates that the ECU (Engine Control Unit), essentially your car’s computer, needs a reboot to recognize the key fob’s remote functions again. A “cold boot” of the ECU, done with the key fob inside the car, will typically reprogram the push-button functions. The easiest way to perform a cold reboot is to disconnect the car’s main battery:
- Locate the Battery: Open your Nissan Maxima’s hood and locate the main car battery.
- Disconnect Battery: Using a wrench, disconnect the negative battery cable (usually black and marked with a “-” sign).
- Wait: Leave the battery disconnected for a minute or two.
- Reconnect Battery: Reconnect the negative battery cable securely.
Keep in mind that disconnecting the battery may reset some of your car’s learned settings, such as idle settings. Your 2007 Nissan Maxima might idle slightly differently for the first few miles after reconnecting the battery, but it should quickly return to normal as the ECU relearns.
Battery Replacement Tip: CR2032
For your 2007 Nissan Maxima key fob, the correct replacement battery is a CR2032 button cell battery. While a slightly thinner CR2025 battery can work in an emergency, the CR2032 is recommended for optimal battery life and performance.
Reprogramming Both Key Fobs
If you have two key fobs for your 2007 Nissan Maxima and are experiencing issues with both, you can try reprogramming them simultaneously. For either of the solutions described above, simply leave both key fobs inside the car when performing the reprogramming or ECU reboot procedures. While not always necessary, this can sometimes resolve issues with both fobs at once.
By trying these simple fixes, you can often resolve common key fob problems with your 2007 Nissan Maxima and avoid unnecessary trips to the dealership.
