In this primer on how to replace a car key fob, Consumer Reports says getting another high-tech key fob can be a pricey proposition.

The key fob is your lifeline to your car, letting you unlock the doors and set off the alarm, at a minimum, but how can you tell if it needs a new battery?

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.

Problems with keyless fobs appear to be an increasingly common problem for motorists as technology has shifted the market away from the traditional key and lock.

How much for a car key repair? Car key fob replacement costs have been decried by numerous drivers. Many have accused auto dealerships of exorbitantly pricing the substitution costs of these fobs.