2010 Toyota Matrix Owners Manual - Page 47
2010 Toyota Matrix Manual
Page 47 highlights
1-2. Opening, closing and locking the doors Wireless remote control∗ The wireless remote control can be used to lock and unlock the vehicle from outside the vehicle. Locks all doors Sounds an alarm (press and hold) Unlocks doors Pressing the button unlocks the driver's door. Pressing the button again within 3 seconds unlocks the other doors.