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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Anti-Theft System - Passive Anti-Theft System (Pats) >> Diagnosis And Testing >> Anti-Theft >> Principles of Operation >> Unlimited Key Mode

Unlimited Key Mode

This system contains a feature named unlimited key mode that has a PID of UNL_KEY_ID (unlimited key id). This feature allows a customer to program more than 8 keys to their vehicle if they request it. Each vehicle in unlimited key mode is set up with a special unlimited transponder security key code. This allows all the customer vehicles to share the same mechanically cut keys, but no other keys from outside can be used to operate the vehicles. For an individual customer, any randomly selected security key that has been previously mechanically cut and electronically programmed to the vehicle is acceptable. Refer to SPARE KEY PROGRAMMING - UNLIMITED KEY MODE .