The 2012 Camry's trunk lid has a 'trunk open' alarm that shows up on the instrument panel as 'door open' red icon. It also turns on the door open beeping sound so long as the trunk lid is open. This is normal and is usually not a problem..
However, if you should need to carry a large item in the trunk and can't close the lid, be prepared to listen to the incessant door open sound with no means to turn it off!!
The trunk lid alarm 'switch' is operated by the trunk latch when you open or close the lid. By manually operating the latch to it's closed position, you can temporarily silence the alarm.
Using a small screwdriver, you can easily press the actuator and turn the alarm off.
Picture 1: trunk lid latch in the OPEN (Alarm ON) position.
YOU MUST RETURN THE ACTUATOR TO THE OPEN POSITION (ABOVE)
(ALARM ON) BEFORE YOU CLOSE THE LID. FAILURE TO DO SO MAY DAMAGE THE LATCHING MECHANISM
DO THIS WITH THE TRUNK OPEN LEVER OR WITH THE REMOTE TRUNK OPEN BUTTON.
Picture 2: trunk lid latch in the CLOSED (Alarm OFF) position.
IF YOU TRY TO CLOSE THE LID WITH THE LATCH IN THIS POSITION YOU MAY DAMAGE OR BREAK THE LATCHING MECHANISM