Few things are more frustrating than standing next to your car, pressing the unlock button, and getting no response. If your key fob is not working, don’t panic — in most cases the fix is simpler than you’d think. Here’s a practical rundown for Northwest Indiana drivers on what to check first, what you can handle yourself, and when it’s time to call a locksmith.
The Most Common Reason a Key Fob Is Not Working
Nine times out of ten, it’s the battery. Key fob batteries are small coin cells that typically last a few years, and they tend to fade gradually — you might notice you have to stand closer to the car or press the button harder before it dies completely. Cold snaps rolling in off Lake Michigan don’t help either, since low temperatures can push a weak battery over the edge.
Most fobs pop open with a small flathead screwdriver or even a coin, and replacement batteries are inexpensive and available at any pharmacy or hardware store in Gary, Merrillville, or wherever you happen to be. Take the old battery with you to match the size printed on it.
Use the Hidden Backup Key to Get Inside
If you’re locked out right now, look closer at your fob. Most fobs made in the last two decades contain an emergency metal key that slides out of the body. Your door handle may have a hidden keyhole under a plastic cap, usually on the driver’s side. This gets you into the car even when the fob’s electronics are completely dead.
Keep in mind that on many vehicles, unlocking the door with the metal key can trigger the alarm — starting the car with the fob nearby usually silences it.
When the Problem Is the Car, Not the Fob
If a fresh battery doesn’t help, the fob itself may not be the culprit. A weak car battery, a blown fuse for the receiver, or interference from nearby transmitters can all keep a healthy fob from talking to the vehicle. A quick test: if a spare fob works fine, the problem is the first fob. If neither works, look at the car.
Reprogramming and Replacement: When to Call a Locksmith
Fobs can also lose their programming — sometimes after a dead car battery or a battery swap done in an odd sequence. Some vehicles let you reprogram a fob yourself with steps from the owner’s manual, but many newer models require professional equipment. A mobile locksmith can reprogram or replace most fobs right in your driveway, and it’s often faster and more convenient than a trip to the dealership.
Water damage, cracked circuit boards, and worn buttons are also common after years of riding around in pockets and cup holders. If your fob has been through the wash, a replacement is usually the safer bet.
Stuck With a Dead Fob in Northwest Indiana?
If your key fob is not working and you’re stranded — or you just want a spare programmed before trouble strikes — Jacob’s Lock and Key can help. We’re a licensed mobile locksmith serving Gary, Hammond, Merrillville, Crown Point, and all of Northwest Indiana, open 7 AM to 11 PM every day of the week. Call Jacob at (219) 342-5595 and we’ll get you back on the road.
Last updated: 07/27/2026