Lexus is300 2021 Service Manual page 225

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turn off. (P.68)
Turn the PKSB (Parking Support Brake)
on (P.221)
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 sur-
rounding area on the bumpers.
Initialization may not have been per-
formed after a battery terminal was dis-
connected and reconnected. Initialize the
system. (P.225)
If this message continues to be displayed
even after initialization, have the vehicle
inspected by your Lexus dealer.
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-
4-5. Using the driving support systems
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
ahead for 5 seconds or more at a speed of
approximately 22 mph (35 km/h) or more.
225
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