negative (no)
the key fob battery is the battey in a key fob torch
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
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
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.
Free On Board (FOB)