Lexus LS460 Owner's Manual page 363

352
4-5. Using the driving support systems

Reactivation of the TRC/VSC systems
Even after the TRC/VSC systems have been turned off, turning the engine
off and then on again will automatically reactivate the TRC/VSC systems.

Reactivation of the TRC system linked to vehicle speed
When only the TRC system is turned off, the TRC system will turn on when
vehicle speed increases. However, when both TRC and VSC systems are
turned off, the systems will not turn on even when vehicle speed increases.

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.
refrain from excessive steering input or stop the vehicle and turn the engine
off. The EPS system should return to normal within 10 minutes.
*
: If the LKA (Lane-Keeping Assist) system cannot operate in this case, a
warning message will be shown on the multi-information display.

Operating conditions of emergency brake signal
When the following three conditions are met, the emergency brake signal
will operate:

The emergency flashers are off.

Actual vehicle speed is over 55 km/h (35 mph).

The brake pedal is depressed in a manner that cause the system to judge
from the vehicle deceleration that this is a sudden braking operation.

Automatic system cancelation of emergency brake signal
The emergency brake signal will turn off in any of the following situations:

The emergency flashers are turned on.

The brake pedal is released.

The system judges from the vehicle deceleration that is not a sudden brak-
ing operation.
LS460_EE (OM50D49E)
*
Should this occur,