2003 LEXUS LS430 navigation system

FRONT POWER SEAT CONTROL SYSTEM REFERENCE
1.RESTRICTION OF STEP MOTORS CONTINUOUS OPERATION
If the step motor is continuously operating for many hours, the step motor is forced to stop and the
"AUTO" indicator blinks. In this case, the step motor automatically restores after cooling for
approximately 7 minutes.
Fig. 1: Identifying Auto Indicator (W/O Lexus Navigation System)

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
System NameSee Procedure
Front Power Seat Control SystemINITIALIZATION

Fig. 2: Identifying Auto Indicator (W/ Lexus Navigation System)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

If the communication is normal when the tool is connected to another vehicle, inspect the DLC3 on
the original vehicle.
If the communication is still impossible when the tool is connected to another vehicle, the problem
is probably in the tool itself, so consult the Service Department listed in the tool's instruction
manual.
1.INDICATOR CHECK
a. Turn the ignition switch to the ON position while pressing the A/C control AUTO switch and R/F
(Recirculation/Fresh) switch simultaneously.
Fig. 13: Identifying Auto Switch (W/O LEXUS Navigation System)

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Check that the all indicators come on and go off 4 times in succession at 1 second intervals.
HINT:
After the indicator check is completed, the system enters the DTC mode automatically.
Press the "OFF" switch to cancel the indicator mode.

Fig. 14: Identifying Auto Switch (W/ LEXUS Navigation System)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 17: Identifying R/F Switch And Code Display (W/O Lexus Navigation System)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
If a slower display is desired, press the driver temperature up switch and change the display in the STEP
operation. Each time the driver temperature up switch is pressed, the display changes by 1 STEP.

Fig. 18: Identifying R/F Switch And Code Display (W/ Lexus Navigation System)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
HINT:
<0037004b0048000300450058005d005d0048005500030056005200580051004700560003005a004b0048005100030057004b004800030047004c00560053004f0044005c00480047000300570055005200580045004f004800030046005200470048000300
46004b00440051004a00480056001100030003[
Codes are displayed from the smaller to the larger numbers in order.
To cancel the check mode, press the "OFF" switch.

Fig. 19: Identifying UP Switch (W/O Lexus Navigation System)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 20: Identifying UP Switch (W/ Lexus Navigation System)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.