If you lose it: You could call a locksmith, who can come and make you a new key on the spot. In some cases—an unusual or older vehicle—a locksmith may not be able to help. You might need to buy a new ignition lock cylinder and key from the dealer or an independent repair shop.
How much does it cost to replace a key?
Unlock the door $75 - $150
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Replace door lock $200 - $600
Rekey ignition $50 - $150
Make standard keys $4 - $10
Make transponder keys $75 - $250