Why You Should Always Have an Extra Key Fob

Tech - by Joe Weber - updated on 8/11/2025

Misplacing or damaging your car key fob can quickly turn into a stressful and expensive problem. Whether you lock your keys in the car, lose them altogether, or your fob simply stops working, having a spare key fob ready to go can save you time, money, and headaches.

At Batteries Plus, we make it easy to get a new key fob or replacement car key, so you're never stuck without access to your vehicle.

What is a Key Fob?

A key fob is a small electronic device that gives you remote access to your vehicle. Modern fobs can unlock doors, start the ignition, pop the trunk, or even enable keyless entry and push-button start features. Most fobs contain a battery, a transponder chip, and a radio signal that communicates with your car's onboard computer.

Automotive key fobs have been around since the 1980s, but they've come a long way since those early remote entry systems. Today's fobs are more advanced and convenient than ever, but that also means they need regular battery replacements and occasional reprogramming to keep them working properly.

Why Should I Have a Spare Car Key Fob?

Many drivers don't realize the true value of having a spare car key fob or replacement remote until it's too late. Here's why it's smart to have one ready:

• Avoid Being Locked Out: If you lose or damage your primary fob, your spare will get you back on the road fast.
• Save Money on Emergency Services: Emergency locksmith services can be pricey and time-consuming compared to keeping a spare.
• Convenience for Families: Easily share your vehicle with other drivers in your household.
• Peace of Mind for College Students: If you have kids away at college, sending them off with a spare key fob ensures they won't get stranded when they are far from home.

  If you've got a kid heading off to college, check out our guide "Back-to-School Tech Essentials: Must-Haves for Dorm Life & Peace of Mind" to ensure they've all the essentials to get through the school year.

• Helps Maintain Vehicle Value: Many buyers expect at least two keys or fobs when purchasing a used car.

Where to Get a Replacement Key Fob Near Me

Many Batteries Plus locations can help you handle all your key fob needs in one quick visit. Stop in for services like key cutting and programming for most vehicle makes and models, plus key fob shell replacements and battery swaps. Our trained associates will program your new fob, cut a precise key, and test everything to make sure it works, often for less than what you'd pay at a dealership. Swing by today and drive away with the peace of mind that comes with a working spare.

Find a Store

While you're here, be sure to take advantage of our free vehicle battery testing, too. If your battery is on its last leg, we stock top-quality replacement car and truck batteries for all makes and models to keep you on the road with confidence.

How Long Does Key Fob Cutting and Programming Take?

In most cases, you'll walk out with your new fob the same day. Some specialty or uncommon keys may require ordering specific parts, but we'll let you know up front and handle everything for you. We'll call you when your new fob arrives for you to come in to complete the service.

Our Key Fob Battery Replacement Options

Do you just need a new battery for your key fob? At Batteries Plus, we make it simple to keep your key fob working like new. We offer two convenient battery replacement options to fit your needs and budget:

Single Key Fob Battery Replacement

Need a quick fix, just once? Stop by your local store, and we'll replace your key fob battery on the spot. We'll also test your fob to make sure it's working properly before you leave.

Unlimited Key Fob Battery Replacement

Want total peace of mind? Ask about our unlimited key fob battery replacement option. For one low price, you'll get unlimited key fob battery replacements for the life of your vehicle. It's a smart way to save money and avoid unexpected surprises.

No matter which option you choose, our experts handle the installation for you, so there's no need to struggle with tiny screws or tricky battery compartments.

Save Money with Batteries Plus

Dealerships often charge hundreds of dollars for a new key fob. Batteries Plus can help you save big with competitive pricing, up to 50% cheaper than the dealership, expert cutting and programming, and a fast turnaround time.

Don't Wait Until It's Too Late

Locking your fob in the car, losing, or damaging your only key fob can cost you time, money, and a lot of stress. Having a spare ready to go is an easy way to avoid emergencies and make life more convenient for your family.

If you're ever having trouble with your key fob or remote start system, don't panic. We're here to help. Check out our guide on how to troubleshoot a remote start that's not working for practical steps to get your fob working again.

Visit your nearest store for key fob cutting and programming. Stop by Batteries Plus to replace your key fob battery or learn about our unlimited battery replacement option. Our experts will make sure you're always prepared.

FAQ: Extra Key Fobs

Q: How much does it cost to get a spare key fob?

A: Prices vary depending on your vehicle make and model, but Batteries Plus typically charges less than dealerships. Visit your local store for an accurate quote.

Q: Can I get a key fob made without the original?

A: In many cases, yes. If you've lost your only key fob, our experts can often program a new one using your vehicle's VIN or onboard diagnostics system. Availability depends on your vehicle's make and model, so stop by your local Batteries Plus to find out what's possible for your car.

Q: Do I need to reprogram my car after replacing the key fob battery?

A: Usually, no. Simply changing the battery shouldn't erase your key fob's programming. However, if the battery has been dead for an extended time, you may need to resync the fob with your vehicle. If you run into trouble, our experts can help test and troubleshoot it for you.

Q: Can you program a key fob if I don't have an original?

A: In many cases, yes! Our experts can often program a new fob using your vehicle's VIN or onboard diagnostics, but it depends on your car's system. Stop by your local store to learn more.

Q: Can a dead key fob battery prevent my car from starting?

A: Yes, it can — especially with push-button start vehicles. If your key fob battery dies, your car may not detect the fob, which means you won't be able to unlock the doors or start the engine. Keeping a fresh battery in your key fob helps you avoid getting stranded.

Q: Do all Batteries Plus stores cut and program car keys?

A: Most do! Use our Store Locator to find a location near you that offers key cutting and programming services.

Q: Can I replace the key fob battery myself?

A: Yes! Most key fob batteries can be replaced at home with just a small flat-head screwdriver. Be sure to check your owner's manual for any specific instructions. Check out our complete guide: How to Change the Battery in Your Key Fob. It guides you through the process of opening your fob, removing the old battery, and installing a new one safely.