For some cars specialist hardware is required to re-program the vehicle keys.

The normal course of action would be to use your main authorised car dealer but this can prove very expensive.
Luckily, there are numerous auto locksmith companies available offering re-encoding other than using your main authorised dealer.
There are companies that will produce master keys or re-encode your transponders. If you’ve just lost your keys and your car is parked where it will attract fines or even removal calling an on-site auto locksmith specialist is probably your best bet.

Before you call the company check all your car’s paperwork. Most cars have a code card supplied when new. Check your car’s manual and service book folder for this. This code may be required when creating new master keys. The alternative may be far more expensive so make a thorough check for this information.