2009 Infiniti FX50 Owner's Manual - Page 146

. Do not place the Intelligent Key near equipment that produces a magnetic field, such as a TV, audio equipment and personal computers. If an Intelligent Key is lost or stolen, INFINITI recommends erasing the ID code of that Intelligent Key from the vehicle. This may prevent the unauthorized use of the Intelligent Key to operate the vehicle. For information regarding the erasing procedure, contact an INFINITI dealer. SPA2074 INTELLIGENT KEY OPERATING RANGE The Intelligent Key functions can only be used when the Intelligent Key is within the specified operating range from the request 1 switch * . When the Intelligent Key battery is discharged or strong radio waves are present near the operating location, the Intelligent Key system's operating range becomes narrower, and the Intelligent Key may not function properly. The operating range is within 31.50 in (80 1 cm) from each request switch * . If the Intelligent Key is too close to the door glass, handle or rear bumper the request switches may not function. When the Intelligent Key is within the operating range, it is possible for anyone who does not carry the Intelligent Key to push the request switch to lock/unlock the doors. 3-8 Pre-driving checks and adjustments