Car not starting after changing fob battery?

Anyone ever had issue of car not starting after changing battery in the fob? Battery in car is fine car was driving perfectly before but won't kick over now?

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Hi @mrroche1992 ,

Can you open the power door locks with the key?

If not have you checked that the new battery in the fob was put in the correct way or is OK?

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Yeah mate it opens the doors just won't turn the car over now

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Hi @mrroche1992 ,

Hopefully you didn't lose the little black transponder chip out of the key fob when you replaced the battery .

The chip doesn't get powered by the fob battery. It receives its power (when it is inserted into the ignition), from the immobilizer unit which sends a pulse signal that powers the chip

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