FYI, this may not work on your vehicle!
But it works on our new Toyota Camry - yippee!
Yesterday evening I went out into the garage and locked the car doors.
I then called the house from my cell and exclaimed: HELP! I'm locked out of the car!
To which my lovely bride of 58 years scoffed, then held her car door key near the mouthpiece while I held my cell phone near the car door. She clicked the UNLOCK feature on her key and BINGO - the horn honked, the inside lights blinked on and the door unlocked.
Isn't modern techie stuff amazing and wonderful?
ps - this may not work on your vehicle!