Lexus GS450h2016, Руководство по обслуживанию

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GS450h_OM_OM30E99U_(U)
4-5. Using the driving support systems
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ECB operation sound
ECB operating sound may be heard in the following cases, but it does not indicate that a
malfunction has occurred.
●
Operating sound heard from the engine compartment when the brake pedal is oper-
ated.
●
Motor sounds of the brake system heard from the front part of the vehicle when the
driver’s door is opened.
●
Operating sound heard from the engine compartment when one or two minutes
passed after the stop of the hybrid system.
■
EPS, VGRS and DRS operation sound
When the steering wheel is operated, a motor sound (whirring sound) may be heard.
This does not indicate a malfunction.
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Automatic reactivation of TRAC and VSC systems
After turning the TRAC 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 TRAC system is turned off, the TRAC will turn on when vehicle speed
increases
If both TRAC and VSC systems are turned off, automatic re-enabling will not occur
when vehicle speed increases.
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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 nor-
mal within 10 minutes.
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Operating conditions of hill-start assist control
When the following four conditions are met, the hill-start assist control will operate;
●
The shift lever is in a position other than N or P (when starting off forward/backward on
an upward incline).
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The vehicle is stopped.
●
The accelerator pedal is not depressed.
●
The parking brake is not engaged.
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Automatic system cancelation of hill-start assist control
The hill-start assist control will be canceled in any of the following situations;
●
The shift lever is shifted to N or P.
●
The accelerator pedal is depressed.
●
The parking brake is engaged.
●
Approximately 2 seconds elapse after the brake pedal is released.