If a warning message is shown on the multi-information display, stay calm and perform the following actions:

If any of the warning message or indicator comes on again after the following actions have been performed, contact your toyota dealer.
If a warning light turns on
or a warning buzzer
sounds
Warning message and warning buzzer listHorn system
LOCATION
INSPECTION
1. INSPECT RELAY (HORN)
(a) Remove the HORN relay from the engine room J/B.
(b) Measure the HORN relay resistance.
Standard:
2. INSPECT HIGH PITCHED HORN ASSY
(a) Check operation of the horn.
Standard:
If the result is not as specified, replace the horn ...