brake LEXUS RX200T 2017 Workshop Manual

3364-5. Using the driving support systems
RX350/RX200t_EE_OM48F32E
Pulling the lever toward you cancels
the speed control.
The speed control is also canceled when
the brake pedal is depressed.
(When the vehicle has been stopped by system control, depressing the brake
pedal does not cancel the setting.)
Pushing the lever up resumes the
cruise control and returns vehicle
speed to the set speed.
However, when a vehicle ahead is not detected, cruise control does not resume when the vehicle speed is approximately 40 km/h (25 mph) or less.
When your vehicle is too close to a
vehicle ahead, and sufficient automatic
deceleration via the cruise control is
not possible, the display will flash and
the buzzer will sound to alert the driver.
An example of this would be if another
driver cuts in front of you while you are
following a vehicle. Depress the brake
pedal to ensure an appropriate vehicle-
to-vehicle distance.
■Warnings may not occur when
In the following instances, warnings may not occur even when the vehicle-to-
vehicle distance is small.
●When the speed of the preceding vehicle matches or exceeds your vehicle
speed
●When the preceding vehicle is traveling at an extremely slow speed
●Immediately after the cruise control speed was set
●When depressing the accelerator pedal
Canceling and resuming the speed control
1
2
Approach warning (vehicle-to-vehicle distance control mode)

3384-5. Using the driving support systems
RX350/RX200t_EE_OM48F32E
■Dynamic radar cruise control with full-speed range can be set when
●The shift lever is in D.
●Range 4 or higher of D has been selected by using the paddle shift switch. (vehicles with paddle shift switches)
●Vehicle speed is above approximately 50 km/h (30 mph). However, when a precedingvehicle is detected, the dynamic radar cruise control with full-speed range can be seteven if the vehicle speed is at or below approximately 50 km/h (30 mph).
■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 vehi-
cle speed may decrease below the set speed in order to maintain the distance to the pre- ceding vehicle.
■Automatic cancelation of vehicle- to-vehicle distance control mode
Vehicle-to-vehicle distance control mode is automatically canceled in the following situ- ations.
●Actual vehicle speed falls below approximat ely 40 km/h (25 mph) when there are no
vehicles ahead.
●The preceding vehicle leaves the lane when your vehicle is following at a vehicle speed below approximately 40 km/h (25 mph). Otherwise, the sensor cannot properly
detect the vehicle.
●VSC is activated.
●TRC is activated for a period of time.
●When the VSC or TRC system is turned off by pressing the VSC OFF switch.
●The sensor cannot detect correctly because it is covered in some way.
●Pre-crash braking is activated.
●The parking brake is operated.
●The vehicle is stopped by syst em control on a steep incline.
●The following are detected when the vehicle has been stopped by system control:
• The driver is not wearing a seat belt. • The driver’s door is opened.• The vehicle has been stopped for about 3 minutes
If vehicle-to-vehicle distance control mode is automatically canceled for any other rea- son, there may be a malfunction in the syst em. Contact any authorized Lexus dealer or repairer, or another duly qua lified and equipped professional.

3394-5. Using the driving support systems
4
Driving
RX350/RX200t_EE_OM48F32E
■Automatic cancelation of constant speed control mode
Constant speed control mode is automatically canceled in the following situations:
●Actual vehicle speed is more than approximately 16 km/h (10 mph) below the set vehi-
cle speed.
●Actual vehicle speed falls below approximately 40 km/h (25 mph).
●VSC is activated.
●TRC is activated for a period of time.
●When the VSC or TRC system is turned off by pressing the VSC OFF switch.
●Pre-crash braking is activated.
If constant speed control mode is automatically canceled for any other reason, there may be a malfunction in the system. Contact any authorized Lexus dealer or repairer, oranother duly qualified and equipped professional.
■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 driv ing. 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 ( P. 336) may not be activated.
●Vehicles that cut in suddenly
●Vehicles traveling at low speeds
●Vehicles that are not moving in the same lane
●Vehicles with small rear ends (trailers with no load on board, etc.)

3404-5. Using the driving support systems
RX350/RX200t_EE_OM48F32E
●Motorcycles traveling in the same lane
●When water or snow thrown up by the surrounding vehicles hinders the detecting of the sensor
■Conditions under which the vehicle-to-vehicle distance control mode may not function
correctly
In the case of the following conditions, op erate 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.
●When the vehicle ahead of you decelerates suddenly
●When your vehicle is pointing upwards(caused by a heavy load in the luggage com-
partment, etc.)
●Preceding vehicle has an extremely high
ground clearance
●When the road curves or when the lanes are narrow
●When steering wheel operation or your posi-tion in the lane is unstable

3424-5. Using the driving support systems
RX350/RX200t_EE_OM48F32E
To change the set speed, operate the lever until the desired set speed is obtained.
Increases the speed
Decreases the speed
Fine adjustment: Momentarily move
the lever in the desired direction.
Large adjustment: Hold the lever in the
desired direction.
The set speed will be increased or decreased as follows:
Fine adjustment: By approximately 1 km/h (0.6 mph)*1 or 1 mph (1.6 km/h)*2 each time the lever is operated.
Large adjustment: The set speed can be incr eased or decreased continually until the
lever is released.
*1: When the set speed is shown in “km/h”
*2: When the set speed is shown in “MPH”
Pulling the lever toward you cancels
the constant speed control.
The speed setting is also canceled when
the brake pedal is depressed.
Pushing the lever up resumes the
constant speed control.
However, resuming is available when the vehicle speed is more than approxi-
mately 40 km/h (25 mph).
Adjusting the set speed
1
2
Canceling and resuming the constant speed control
1
2

3454-5. Using the driving support systems
4
Driving
RX350/RX200t_EE_OM48F32E
◆When the brake hold system is disabled
■Stopping the engine
While driving with the shift lever in D
or M, depress the brake pedal, and
stop the vehicle.
The Stop & Start indicator will come on.
■Restarting the engine
Release the brake pedal.
The Stop & Start indicator will turn off.
Stop & Start system
: If equipped
The Stop & Start system stops and restarts the engine according to the brake
pedal operation and other operations when the vehicle is stopped.
Stop & Start system operation

3464-5. Using the driving support systems
RX350/RX200t_EE_OM48F32E
◆When the brake hold system is enabled
The Stop & Start system is operational when the brake hold system is operat-
ing. (P. 263)
■Stopping the engine
While driving with the shift lever in D
or M, depress the brake pedal, and
stop the vehicle.
The Stop & Start indicator will come
on.
While the brake hold system is oper- ating, the brake hold operated indi-
cator (yellow) will come on. If the brake pedal is released, the enginewill remain stopped by the Stop &
Start system.
■Restarting the engine
Depress the accelerator pedal. (Releasing the brake pedal will not restart the
engine.)
The Stop & Start indicator and brake hold op erated indicator (yellow) will turn off.
■Stop & Start system operation when the brake hold system is operating
●If the engine is restarted automatically by the Stop & Start system when the
brake hold system is operating, the brake hold system will continue to apply
the brakes.
●If the operation conditions of the brake hold system are no longer met ( P.
263) while the engine is stopped by the Stop & Start system, the brake hold
system will stop operating.
At this time, the parking brake will be a pplied automatically and the engine will be restarted automatically.

3474-5. Using the driving support systems
4
Driving
RX350/RX200t_EE_OM48F32E
◆When the dynamic radar cruise control with full-speed range is operating
(if equipped)
The Stop & Start system is operational during a controlled stop by the
dynamic radar cruise control with full-speed range. (P. 332)
■Stopping the engine
While driving with the dynamic
radar cruise control with full-speed
range in vehicle-to-vehicle distance
control mode, the engine will stop
automatically if the vehicle comes to
a complete stop through a con-
trolled stop. (The engine will stop
automatically even though the brake
pedal is not depressed.)
The Stop & Start indicator will come on.
■Restarting the engine
When the preceding vehicle starts off, the engine will restart automatically.
The Stop & Start indicator will turn off.
■Stop & Start system operation during a controlled stop by the dynamic
radar cruise control with full-speed range
If the engine is restarted automatically by the Stop & Start system during a
controlled stop by the dynamic radar cruise control with full-speed range, the
controlled stop will continue. (Resuming follow-up cruising after a controlled
stop: P. 335)

3484-5. Using the driving support systems
RX350/RX200t_EE_OM48F32E
Press the Stop & Start cancel switch to
disable the Stop & Start system.
The Stop & Start cancel indicator will
come on. Pressing the switch again will enable theStop & Start system and the Stop & Start
cancel indicator will turn off.
■Automatic reactivation of the Stop & Start system
Even if the Stop & Start system is disabled by the Stop & Start cancel switch, it
will be automatically enabled when the engine switch is turned off, and then to
the engine started.
■If the Stop & Start cancel switch is pressed
●When the engine is stopped by the St op & Start system, pressing the Stop
& Start cancel switch will restart the engine.
●With the Stop & Start system disabl ed, pressing the Stop & Start cancel
switch will enable the system but no t stop the engine. From the next time
the vehicle is stopped (after the Stop & Start system has been enabled), the
engine will be stopped.
If the engine is stopped by the Stop & Start system when the vehicle is on an
incline, brake force is temporarily maintained to prevent rolling backwards until
the engine is restarted and drive force is generated. When drive force is gener-
ated, the maintained brake force is automatically canceled.
●This function operates on flat surfaces as well as steep inclines.
●Sound may be generated from the brak es, but this is not a malfunction.
●Brake pedal response may change and vibration may occur, but these are not
malfunctions.
Disabling the Stop & Start system
Hill-start assist control

3494-5. Using the driving support systems
4
Driving
RX350/RX200t_EE_OM48F32E
■Operating conditions
●The Stop & Start system is operational when all of the following conditions are met:
• The brake pedal is being depressed firmly. (Except when the vehicle comes to a controlled stop while driving with the dyna mic radar cruise control with full-speed
range in vehicle-to-vehicle distance control mode [if equipped])
• The shift lever is in D or M.
• is off.
• The driver's seat belt is fastened.
• The engine is adequately warmed up.
• The driver's door is closed.
• The accelerator pedal is not being depressed.
• The outside temperature is -5°C (23°F) or higher.
• The hood is closed.
●In the following situations the engine may not be stopped by the Stop & Start system.
This is not a malfunction of the Stop & Start system.
• The air conditioning system is being used when the ambient temperature is high or
low.
• The battery is not sufficiently charged, such as if the vehicle has been parked for a long time and the battery charge has decreased, the electric load is large, the bat-
tery temperature is excessively low or the battery has deteriorated, or is undergoing
a periodic recharge.
• The brake booster vacuum is low.
• The vehicle is stoppe d on a steep incline.
• The steering wheel is being operated.
• Due to traffic or other circumstances the vehicle is being stopped repeatedly.
• The vehicle is being driven in a high altitude area.
• Engine coolant temperature or transmissi on fluid temperature is extremely low or
high.
• The battery fluid temperature is extremely low or high.
• For a while after the battery terminals have been disconnected and reconnected.
• For a while after the battery replacement.
●In the following situations, the engine will re start automatically if the engine is stopped
by the Stop & Start system. (To enable stoppi ng of the engine by the Stop & Start sys-
tem, drive the vehicle.)
• The air conditioning system is turned on.
• is turned on.
• The steering wheel is operated.
• The shift lever is shifted to a position other than D or M.
• The driver's seat belt is unfastened.
• The driver's door is opened.
• The accelerator pedal is depressed.
• The Stop & Start cancel switch is pressed.
• The vehicle starts to roll on an incline.