See also:

Key lock-in prevention function
This function prevents the doors from being locked with the key still in the ignition switch. ...

Entering the vehicle following remote engine start shutdown
An alarm trigger may occur if the vehicle is opened by the remote keyless entry transmitter within a few seconds immediately following remote engine start shutdown. ...

Certification for the Handsfree system
FCC WARNING Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. NOTE This device complies ...