Here's a general guide, but always check your specific key fob for variations:
1. Identifying your Key Fob:
* Simple Remote (no key blade): This is a smaller, typically button-only remote. It's the easiest type to work with.
* Keyless Entry Remote (with key blade): This is larger and incorporates a folding or sliding key blade. You'll need to access the key blade mechanism to get to the battery.
2. Opening the Key Fob:
* Simple Remote: Usually, there's a small seam or a notch on the fob. You might need a small flat-head screwdriver (carefully!) to pry it open. Look for a small gap, and gently insert the screwdriver. Work your way around the perimeter until the two halves separate. Some remotes just snap apart.
* Keyless Entry Remote: These are more complex. There's typically a small button or a release mechanism on the side (often near the key blade release). You may need to press this button while simultaneously prying it open carefully. Some require pushing on a specific area to release a latch. The process is often more intricate and requires a closer inspection of your key fob for release points.
3. Replacing the Battery:
Once open, you should see a small, typically CR2032, battery. (Double-check the battery type printed on the old battery or inside the fob compartment.)
* Note the Orientation: Pay close attention to the positive (+) and negative (-) sides of the old battery. The new battery must be inserted with the same polarity.
* Remove the Old Battery: Carefully remove the old battery.
* Insert the New Battery: Insert the new CR2032 battery, ensuring correct polarity.
* Reassemble the Key Fob: Carefully snap or push the two halves of the key fob back together.
4. Testing the Key Fob:
After reassembly, test the key fob by trying to lock and unlock your car doors.
If you're having trouble:
* Consult your owner's manual: Your owner's manual may have a specific section on replacing the key fob battery.
* Search YouTube: A quick YouTube search for "[Your Year] Chevrolet Impala key fob battery replacement" might reveal a video tutorial.
* Take it to a locksmith or dealer: If you're struggling to open the fob without damaging it, take it to a professional.
Important Note: Use gentle force when prying open the key fob to avoid breaking the plastic. If you're unsure, it's always best to seek professional help.