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So let make it clearer for most of yo out there...a dead keyfob battery means no remote operation of door locks.(here we assume that the car key is actually a key plus the fob).to get in the car, simply uncover the key hole on the drivers door.immobilizer reads the key and the engine runs.to lock the car when you arrive, simply lock by key.even keyless cars have some key in their fib or card to use when out of keyfob battery.

They didnt hide it...you just didnt read the manual...next time post a real life hack