See also:

Advanced Key Suspend Function
If one key is left in the vehicle or trunk and the second key is used to lock the vehicle, the functions of the advanced key left in the vehicle or the trunk are temporarily suspended to prevent t ...

New for 2011
There are no significant changes. ...

Operation Using Advanced Keyless Functions
Operational Range The system operates only when the driver is in the vehicle or within operational range while the advanced key is being carried. NOTE: When the battery power is low, or in place ...