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220

4-5. Using the driving support systems

Time
Engine output restriction control begins operating
System determines that possibility of collision with detected object is high
Engine output reduced
System determines that possibility of collision with detected object is extremely 
high
Brake control begins operating
Brake control strength increased
Example: Multi-information display: “BRAKE!”
Example: Multi-information display: “Switch to Brake”

■

If the Parking Support Brake has oper-

ated

If the vehicle is stopped due to operation of 

the Parking Support Brake, the Parking 

Support Brake will be disabled and the 

PKSB OFF indicator will illuminate. If the 

Parking Support Brake operates unneces-

sarily, brake control can be canceled by 

depressing the brake pedal or waiting for 

approximately 2 seconds for it to automati-

cally be canceled. Then, the vehicle can be 

operated by depressing the accelerator 

pedal.

■

Re-enabling the Parking Support Brake

To re-enable the Parking Support Brake 

when it has been disabled due to system 

operation perform any of the following 

operations.
At this time, the PKSB OFF indicator will 

turn off. (



P.66)

●

Turn the PKSB (Parking Support Brake) 

on (



P.217)

●

The engine switch is turned to IGNI-

TION ON mode after the engine switch 

has been turned off.

●

The shift lever is in P.

●

Drive with no operation targets in the 

traveling direction of the vehicle

●

Change the traveling direction of the 

vehicle (such as changing from moving 

forward to backing up, or from backing 

up to moving forward)

■

If “Parking Support Brake Unavailable” 

is displayed on the multi-information 

display and the PKSB OFF indicator is 

flashing

If this message is displayed only when the 

shift lever is in any position other than R, a 

sensor on the front or rear bumper may be 

dirty. Clean the sensors and their surround-

ing area on the bumpers.

■

If “Parking Support Brake Unavailable” 

and “Parking Assist Unavailable Clean 

Parking Assist Sensor” is displayed on 

the multi-information display and the 

PKSB OFF indicator is flashing

●

A sensor may be covered with ice, snow, 

dirt, etc. Remove the ice, snow, dirt, etc., 

from the sensor to return the system to 

normal.

If this message is shown even after 

removing dirt from the sensor, or shown 

when the sensor was not dirty to begin 

with, have the vehicle inspected by your 

Lexus dealer.

●

A sensor may be frozen. Once the ice 

melts, the system will return to normal.

●

Water may be continuously flowing over 

the sensor surface, such as in a heavy 

rain. When the system determines that it 

is normal, the system will return to nor-

mal.

■

If a battery terminal has been discon-

nected and reconnected

The system needs to be initialized. To initial-

ize the system, drive the vehicle straight 

C
D

E
F

G

H

I

J

K