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RX350_270_EE_48D77E.book 274 ページ ２０１４年１月２４日 金曜日 午前１０時４分
2-4. Using other driving systems
When the message is displayed on the multi-information display showing that
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TRC has been disabled even if the VSC off switch has not been pressed
TRC and hill-start assist control cannot be operated. Contact your any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional.
Sounds and vibrations caused by the ABS, VSC, TRC and brake assist
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A sound may be heard from the engine compartment when the engine is
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started or just after the vehicle begins to move. This sound does not indicate that
a malfunction has occurred in any of these systems.
Any of the following conditions may occur when the above systems are operat-
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ing. None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
• The brake pedal may pulsate slightly after the ABS is activated.
• The brake pedal may move down slightly after the ABS is activated.
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 TRC/VSC systems
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Turning off the engine after turning off the TRC/VSC systems will automatically
reactivate them.
Reactivation of the TRC system linked to vehicle speed
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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
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The effectiveness of the EPS system is reduced to prevent the system from over-
heating 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 engine off. The EPS system should
return to normal within 10 minutes.
274
RX350/270_EE
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