On a fob, there are multiple buttons, one of those buttons unlocks the car. Another one of them locks the car. One of the buttons pops the trunk and the last button turns on or off the alarm. On more advanced models the radio frequency fob can also be used to open the trunk or even remotely start the vehicle. My current one allows me to lock, unlock, remote start, open back hatch, open back window and alarm.
negative (no)
No.
You put the key in the ignition and turn, you don't need a fob in order to start a car.
It is possible to program one key fob to use on two different cars. If the key fob uses a primitive fixed code system, programming two cars will not work.
l
The key fob uses radio frequency signals to communicate with the car's security system. When the button on the key fob is pressed, it sends a signal to the car's receiver, which then unlocks the doors or starts the engine.
Well that question is too general. What year and what make is the vehicle? Is it a brand new key fob? If it is brand new it may need to be programed to the vehicle. The battery may be dead in the fob. The fob may also have a broken contact inside of it. I recommend taking your key fob and vehicle to the dealer for diagnosis.
what is the reason for not fixing camera in key fob
Free On Board (FOB)
C200 key fob problem
By driving with the key fob in the ignition.
You do not have to reset the key fob when changing the battery.