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3-8. Changing the driving characteristics
system indicator stays on and the "Traction Control Turned OFF" goes off. (The vehicle
can be driven normally during this time.)
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Sounds and vibrations caused by the downhill assist control system
A sound may be heard from the engine compartment when the engine is started or
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just after the vehicle begins to move. This sound does not indicate that a malfunction
has occurred in downhill assist control system.
Either of the following conditions may occur when the downhill assist control system is
●
operating. None of these are indicators 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.
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System malfunction
In the following cases, have your vehicle checked by your Lexus dealer.
The downhill assist control system indicator does not come on when the engine switch
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is turned to ON.
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The downhill assist control system indicator does not come on when the "DAC" switch
is pressed.
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The slip indicator comes on.
WARNING
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When using downhill assist control system
Do not rely overmuch on the downhill assist control system. This function does not extend
the vehicle' s performance limitations. Always thoroughly check the road conditions, and
drive safely.
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Situations in which the system may not operate properly
The system may not operate on the following surfaces, which may lead to an accident
causing death or serious injury.
Slippery surfaces such as wet or muddy roads
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Icy surface
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Unpaved roads
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