When the battery is removed from the key fob, the fob can lose its ‘memory’ or programming. If the key fob is not working after replacing its battery, a reprogramming procedure may be required.

Locksmiths might not be able to program fobs for every brand. Another option is to buy a key fob online and then have it programmed at a dealership or by a locksmith.

Batteries fade and die over time, but but changing the cell in your Chevrolet key fob doesn't have to be difficult.

Just know that most customer-programmable key fobs will require two current working keys in order to program the new one. RELATED: How to replace your key fob | Your key fob may have hidden features ...

Many Harley-Davidson models come with a key fob to help control your morotrcycle's security system. Here's how to reset yours if you need to.

But maybe you’ve experienced the downside: The cost to replace the latest key fobs can be as much as $400 depending on the brand. Then add another $20 to $130 to program it to work with your car.

“The fob has become a critical part of the security of the car,” he said. The average price for an Audi key fob replacement, including programming, is $500, we were told.

Like anything else relying on a battery, you car key fob can die—often at the worst time. Thankfully, these batteries are easy to replace.

If your key fob isn't working, it probably needs a new battery.

And that’s just for the fob. Add another $50 to $100 to get replacement fobs programmed to work with your car and to have a new mechanical backup key made.

The simplest way to program a Focus smart key fob is to take the car to a Ford dealer or qualified locksmith and have them program it for you. Modern cars need to have their keys coded to the computer ...

How to program Saab 93 key fob? Given that Saab dealers don't exist any more you'll need to contact a professional locksmith to have them reprogram your Saab's key to the car itself.