Lexus LS460 User Manual page 310

310
4-5. Using the driving support systems
EPS operation sound
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When the steering wheel is operated, a motor sound (whirring sound) may be heard.
This does not indicate a malfunction.
Reactivation of the TRAC/VSC systems
■
Even after the TRAC/VSC systems have been turned off, turning the engine off and
then on again will automatically reactivate the TRAC/VSC systems.
Reactivation of the TRAC system linked to vehicle speed
■
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 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.
CAUTION
The ABS does not operate effectively when
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The limits of tire gripping performance have been exceeded (such as excessively
●
worn tires on a snow covered road).
The vehicle hydroplanes while driving at high speed on wet or slick roads.
●
Stopping distance when the ABS is operating may exceed that of normal condi-
■
tions
The ABS is not designed to shorten the vehicle' s stopping distance. Always main-
tain a safe distance from the vehicle in front of you, especially in the following situa-
tions:
When driving on dirt, gravel or snow-covered roads
●
When driving with tire chains
●
When driving over bumps in the road
●
When driving over roads with potholes or uneven surfaces
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LS460/LS460L_U (OM50D48U)
*
Should this occur, refrain from excessive