Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: System Description

• There is an obstacle on the shoulder of the road (when the vehicle is driven in a narrow tunnel, on a narrow bridge or on a narrow road).
• The vehicle is being driven on grass or a gravel road.
• The vehicle is driven toward a banner or flag, a low-hanging branch or a boom barrier (such as those used at railroad crossings, toll gates and parking lots).

  HINT:

  Even if the intelligent clearance sonar system operates while on a railroad crossing, brake control will be automatically be canceled after approximately 2 seconds. Brake control can also be canceled by depressing the brake pedal. After brake control is canceled, depress the accelerator pedal to drive out of the railroad crossing.

• The vehicle is close to other vehicles while being parallel parked.
• The vehicle is being driven on a steep slope.
• There are objects located lower than the ultrasonic sensors.
• The vehicle is being driven on a narrow road.
• There is a rut or hole in the surface of the road.
• When the vehicle is driven on a metal cover (grating), such as those used for drainage ditches.

• In severe weather such as fog, snow or a sandstorm.
• Foreign matter such as snow, ice or mud is attached to an ultrasonic sensor. (The system returns to normal when the foreign matter is removed.)
• When there is a downpour, or water is splashing on the vehicle.
• Water is covering an ultrasonic sensor due to a flooded road.

• When ultrasonic waves are received from the horn or parking sonar system of another vehicle, a motorcycle engine, or the air brakes of a large vehicle.
• Electronic components such as a backlit license plate (especially fluorescent types), fog lights, a fender pole or a wireless antenna are installed near an ultrasonic sensor.

• The height of the vehicle has drastically changed due to loading (the nose tilts up or down).
• The vehicle is significantly tilted.
• An ultrasonic sensor is misaligned due to a collision, etc.

• The vehicle is being loaded onto a ship, truck or other transport vessel.
• The vehicle is being operated on a drum tester such as a speedometer tester, brake/speedometer combination tester or chassis dynamometer.
• When the vehicle is being towed.

• When a vehicle is travelling along a road that is located extremely close to a parking space.
• When a vehicle is entering an adjacent parking space.
• When an object is passing extremely close to the vehicle.
• When there is a metal object behind the vehicle such as a guard rail, wall, traffic sign or parked vehicle that easily reflects radio waves.

• The intelligent clearance sonar system uses the multi-information display in the combination meter assembly, the meter mirror sub-assembly and ICS OFF indicator light to indicate the operation status of the system.

• When the operation conditions are met, the clearance warning ECU assembly sends display or illumination request signals to the combination meter assembly, meter mirror sub-assembly and ICS OFF indicator light. The clearance warning ECU assembly also sends buzzer sound request signals to the combination meter assembly.

• When operation of the intelligent clearance sonar system is temporarily suspended due to a malfunction or dirty ultrasonic sensor, a message is displayed on the multi-information display in the combination meter assembly, the ICS OFF indicator light blinks and the buzzer sounds.

• When the intelligent clearance sonar system is off, the ICS OFF indicator light illuminates.

Operation Check

OPERATION CHECK ICS OFF INDICATOR LIGHT OPERATION CHECK (a) Turn the engine switch on (IG). (b) Turn the intelligent clearance sonar system off and confirm that the ICS OFF indicator in the combinatio ...

Customize Parameters

CUSTOMIZE PARAMETERS CUSTOMIZE INTELLIGENT CLEARANCE SONAR SYSTEM (a) Customizing with the Techstream. NOTICE: When the customer requests a change in a function, first make sure that the function c ...

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