Toyota PRIUS 50 2020 Series Owner's Manual page 319

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Automatic reactivation of TRC and VSC systems
After turning the TRC and VSC systems off, the systems will be automatically
re-enabled in the following situations:
When the power switch is turned off
If only the TRC system is turned off, the TRC will turn on when vehicle
speed increases
If both the TRC and VSC systems are turned off, automatic re-enabling will
not occur when vehicle speed increases.
Operating conditions of Active Cornering Assist
The system operates when the following occurs.
TRC/VSC can operate
The driver is attempting to accelerate while turning
The system detects that the vehicle is drifting to the outer side
The brake pedal is released
Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the system from
overheating when there is frequent steering input over an extended period of
time. The steering wheel may feel heavy as a result. Should this occur, refrain
from excessive steering input or stop the vehicle and turn the hybrid system
off. The EPS system should return to normal within 10 minutes.
Electric power steering system warning light (warning buzzer)
P. 443
Operating conditions of emergency brake signal
When the following conditions are met, the emergency brake signal will oper-
ate:
The emergency flashers are off.
Actual vehicle speed is over 55 km/h (35 mph).
The system judges from the vehicle deceleration that it is a sudden braking
operation.
Automatic system cancelation of emergency brake signal
The emergency brake signal will be canceled in any of the following situa-
tions:
The emergency flashers are turned on.
The system judges from the vehicle deceleration that is not a sudden brak-
ing operation.
4-5. Using the driving support systems
317
4

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