Lexus 2013 GS 350 Owner's Manual page 249

Reactivation of the TRAC system linked to vehicle speed
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When only the TRAC system is turned off, the TRAC system will turn on when vehi-
cle speed increases. However, when both TRAC/VSC systems are turned off, the
systems will not turn on even when vehicle speed increases.
Reduced effectiveness of the EPS system
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The effectiveness of the EPS system is reduced to prevent the system from overheat-
ing when there is frequent steering input over an extended period of time. The steer-
ing wheel may feel heavy as a result.
steering input or stop the vehicle and turn the engine off. The effectiveness will
improve after a short while.
*
: If the LKA (Lane-Keeping Assist) system cannot operate in this case, a warning
message will be shown on the multi-information display.
GS350_U (OM30C34U)
4-5. Using the driving support systems
*
Should this occur, refrain from excessive
I n f o r ma t i o n P r o v i d e d b y :
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