https://jsfiddle.net/attackkale41/6jswhd3p/ Remote Key Fob Repairs Check the battery first to determine if the remote key fob isn't working. This is the most frequent reason why your car isn't responding when you make commands. A new battery can fix the problem however if it doesn't, there could be a different issue. Many of these issues can be solved with just simple steps. Check the Battery Key fobs have a variety of functions, like remote locking and unlocking your car, turning on the interior lighting and allowing you to start the engine at the touch of the button. If you notice your fob isn't responding in the same way it used too, or you have to get closer to the vehicle to lock or unlock it, your remote battery may need to replaced. Most key fobs are powered by a standard watch battery, which is usually the CR2032. These can be purchased at most grocery and hardware stores and even at some gas stations. Fobs vary, however, inside so it is important to consult your owner's manual for the exact kind of battery needed. It's also an excellent idea to have a spare fob on hand -- you never know when it could get lost or break! A remote key fob functions by sending the radio frequency (RF) signal to the receiver inside your vehicle. When you press a button on the fob it transmits a unique code that matches preprogrammed codes within your vehicle's system. The car's receiver is then able to verify the code and then opens or closes the doors according to the signal. If you're having trouble with your key fob, it might simply need a new battery or the codes may need to be reset. In the meantime, while you wait for a replacement battery to arrive, try some things to make your fob respond better. For instance, most cars have an option that allows you to disable your key fob's key-chain alarm by holding down the lock or panic button on your fob for 10 seconds, reports Consumer Reports. This is a simple trick that can help prevent your key-fob from activating accidentally