Cruise Control Can Be Set When; Accelerating After Setting The Vehicle Speed (Cruise Control); Automatic Cancelation Of Cruise Control; If “Cruise Control Malfunction Visit Your Dealer” Is Displayed - Lexus RX 450H Owner's Manual

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4-5. Using the driving support systems

Cruise control can be set when

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The shift lever is in D or range 4 or higher of S has been selected.
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Range 4 or higher has been selected by using the paddle shift.
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(vehicles with paddle shift switches)
Vehicle speed is above approximately 25 mph (40 km/h).
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Accelerating after setting the vehicle speed
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The vehicle can be accelerated by operating accelerator pedal. After accelerating, the
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set speed resumes.
Even without canceling the cruise control, the set speed can be increased by first accel-
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erating the vehicle to the desired speed and then pushing the lever down to set the new
speed.

Automatic cancelation of cruise control

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Cruise control is automatically canceled in any of the following situations.
Actual vehicle speed falls more than approximately 10 mph (16 km/h) below the set
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speed.
Actual vehicle speed is below approximately 25 mph (40 km/h).
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VSC is activated.
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TRAC is activated for a period of time.
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When the VSC or TRAC system is turned off by pressing the VSC OFF switch.
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If "Cruise Control Malfunction Visit Your Dealer" is displayed on the multi-information
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display
Press the "ON/OFF" button once to deactivate the system, and then press the button
again to reactivate the system.
If the cruise control speed cannot be set or if the cruise control cancels immediately after
being activated, there may be a malfunction in the cruise control system. Have the vehi-
cle inspected by your Lexus dealer.
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