Situations Unsuitable For Dynamic Radar Cruise Control; When The Sensor May Not Be Correctly Detecting The Vehicle Ahead - Toyota 2016 Highlander Service Manual

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4-5. Using the driving support systems
WARNING
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Situations unsuitable for dynamic radar cruise control

Do not use dynamic radar cruise control in any of the following situations.
Doing so may result in inappropriate speed control and could cause an acci-
dent resulting in death or serious injury.
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Roads where there are pedestrians, cyclers, etc.
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In heavy traffic
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On roads with sharp bends
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On winding roads
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On slippery roads, such as those covered with rain, ice or snow
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On steep downhills, or where there are sudden changes between sharp up
and down gradients
Vehicle speed may exceed the set speed when driving down a steep hill.
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At entrances to expressways
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When weather conditions are bad enough that they may prevent the sen-
sors from detecting correctly (fog, snow, sandstorm, heavy rain, etc.)
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When an approach warning buzzer is heard often
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When your vehicle is towing a trailer or during emergency towing
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When the sensor may not be correctly detecting the vehicle ahead

In the case of the following and depending on the conditions, operate the
brake pedal when deceleration of the system is insufficient or operate the
accelerator pedal when acceleration is required.
As the sensor may not be able to correctly detect these types of vehicles,
the approach warning (P. 274) will not be activated, which may lead to an
accident resulting in death or serious injury.
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Vehicles that cut in suddenly
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Vehicles traveling at low speeds
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Vehicles that are not moving in the same lane
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Vehicles with small rear ends (trailers with no load on board etc.)
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