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.

Most dealers we contacted said key-fob programming typically takes just 15-30 minutes, and the whole process, including cutting the mechanical spare key, rarely takes longer than an hour.

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.

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 ...

With a key fob programmer, you can program your new key and reprogram faulty key fobs. Our experts have researched Amazon to discover the most popular key fob programmers in the automotive market.

Replacing a key fob usually involves contacting your dealership who then needs to place a custom order. But the K2 fob works like a universal remote for vehicles, requiring just their make, model ...

"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.

They have the expensive equipment required to program a new key fob. If you car’s a little older, Consumer Reports said you likely can save money with an after market fob.

Your car’s key fob allows you to get in and out of your car, but if it’s damaged, it may or may not be covered under warranty in some cases.

“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.