A few weeks ago, the latch in my car door got stuck, blocking the door from closing. After a few crude attempts at jostling it, I knew it was time to purchase a silicone spray to lubricate it.

Electronic car door latches need an electrical current to operate, so if your battery dies or something goes wrong with your car’s electrical control system, your car doors might not open ...

One that sometimes gets lost in the mix but is actually quite useful is that small button on your door handle. It's found on all types of cars — and all types of car owners are confused.