Sold for only $9.99, the multi-function Kounatsuri portable door handle is designed to assist people in moving in and out of the car. Available in two colors, blue and red, it has an average ...

Instead of a simple, familiar mechanical latch, it’s now common for a car’s exterior door handles to remain flush against the door until the car is unlocked, requiring an electric motor to open.

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 ...