Toyota 2016 Highlander - A Warning Buzzer Sounds When Leaving the Vehicle

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What to do if... (Troubleshooting)
HIGHLANDER_U (OM48F09U)
● Is the electronic key left inside the vehicle or the moon roof or panoramic
moon roof open?
Check the message on the multi-information display. (P. 578)
● When a warning light turns on or a warning message or indicator is dis-
played, refer to P. 569, 578.
A warning buzzer sounds when leaving the vehicle
(vehicles with a smart key system)
A warning light turns on or a warning message or indicator
is displayed