When constant speed control mode is selected, your vehicle will maintain a set speed without controlling the vehicle-to-vehicle distance. Select this mode only when vehicle-to-vehicle distance control mode does not function correctly due to a dirty radar sensor, etc.
1. With the cruise control off, press and hold the "ON/OFF" button for 1.5 seconds or more.
Immediately after the "ON/OFF" button is pressed, the radar cruise control indicator will come on. Afterwards, it switches to the cruise control indicator.
Switching to constant speed control mode is only possible when operating the lever with the cruise control off.
2. Accelerate or decelerate, with accelerator pedal operation, to the desired vehicle speed (at or above approximately 25 mph [40 km/h]) and push the lever down to set the speed.
Cruise control "SET" indicator will come on.
The vehicle speed at the moment the lever is released becomes the set speed.
■ Dynamic radar cruise control with full-speed range can be set when
(vehicles with paddle shift switches)
■ Accelerating after setting the vehicle speed The vehicle can accelerate by operating the accelerator pedal. After accelerating, the set speed resumes. However, during vehicle-to-vehicle distance control mode, the vehicle speed may decrease below the set speed in order to maintain the distance to the preceding vehicle.
■ When the vehicle stops while follow-up cruising
■ Automatic cancelation of vehicle-to-vehicle distance control mode Vehicle-to-vehicle distance control mode is automatically canceled in the following situations.
If vehicle-to-vehicle distance control mode is automatically canceled for any other reason, there may be a malfunction in the system. Contact your Lexus dealer.
■ Automatic cancelation of constant speed control mode Constant speed control mode is automatically canceled in the following situations:
If constant speed control mode is automatically canceled for any other reason, there may be a malfunction in the system. Contact your Lexus dealer.
■ Warning messages and buzzers for dynamic radar cruise control with full-speed range Warning messages and buzzers are used to indicate a system malfunction or to inform the driver of the need for caution while driving. If a warning message is shown on the multi-information display, read the message and follow the instructions.
■ 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 may not be activated.
■ Conditions under which the vehicle-to-vehicle distance control mode may not function correctly In the case of the following conditions, operate the brake pedal (or accelerator pedal, depending on the situation) as necessary.
As the sensor may not be able to correctly detect vehicles ahead, the system may not operate properly.
Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual > Vehicle Stability Control System: Left Front Wheel Speed Sensor Circuit Intermittent (C05001F)
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Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual > Power Mirror Control System (w/ Memory): Power Mirrors do not Return to Memorized Position
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