Of course, programming a key fob won't take all day — but it's not a quick fix either. The time required to reprogram these devices depends heavily on factors like the vehicle's make and 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.

If you're looking to pick up a new key fob, or repair one, you might wonder how long programming it takes and whether or not you can do it yourself.