How do you disarm a 1999 Mercury Cougar antitheft chip?

Disarming the antitheft system on a 1999 Mercury Cougar typically requires the use of a functioning key or key fob programmed to the vehicle. If you don’t have the proper key, you may need to consult the owner's manual for specific reset procedures or disconnect the battery for a short period to reset the system. In some cases, a professional locksmith or dealership may be necessary to reprogram a new key or disable the system. Always ensure that any modifications comply with local laws and regulations.