Can a Car Start If the Key Fob Battery Is Dead?

[TessaDella]

If the key fob battery is dead, you can press the start button on the key fob twice to successfully start the car. Methods to start the car when the key fob battery is dead: replace the battery; take out the mechanical key from the electronic key fob to open the car door, then press the brake pedal all the way down and press the start button on the dead key fob twice—this can also start the car. Even though the electronic key fob has no power, the start button can still detect the presence of the key fob's chip. Detailed steps to replace the key fob battery: First, prepare a 3V CR2032 alkaline battery; press the small button on the key fob to release the metal mechanical key. After removing the mechanical key, you can see the hidden part that was blocked by the metal key. Then, use your left thumb to pry open the key fob along the middle seam—a slight force will open one end of the battery cover. After opening the key fob cover, you can see the battery inside. Remove the old battery and insert the new one into the battery slot. Finally, press the cover back into place and slowly apply pressure to ensure it is securely closed. This completes the key fob battery replacement.