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What to do if... (Troubleshooting)
COROLLA_TMMMS_TMMC_U (OM12F00U)
● The auto power off function will be operated if the vehicle is left in ACCES-
SORY or IGNITION ON mode (the engine is not running) for a period of
time. (P. 168)
● The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? (P. 494)
● The brake system warning light is on
Is the parking brake released? (P. 183)
Depending on the situation, other types of warning buzzer may also sound.
(P. 492, 504)
● Is the electronic key left inside the vehicle?
Vehicles with a multi-information display: Check the message on the multi-
information display. (P. 504)
● Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. (P. 68)
Vehicles without a smart key system
To stop the alarm, turn the engine switch to the “ON” position or start the
engine.
Vehicles with a smart key system
To stop the alarm, turn the engine switch to IGNITION ON mode or start the
engine.
● When a warning light turns on, refer to P. 492.
The engine switch is turned off automatically
(vehicles with a smart key system)
A warning buzzer sounds during driving
A warning buzzer sounds when leaving the vehicle
(vehicles with a smart key system)
An alarm is activated and the horn sounds
(vehicles with an alarm)
A warning light turns on
(vehicles with a drive monitor display)
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