LEXUS LS430 2003 Factory Repair Manual

Fig. 10: Identifying Luggage Room Junction Block Components
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Luggage Room Junction Block
FuseSystem
7.5ALCE LPLight Auto Turn Off System

Multiplex Communication System (BEAN - Steering Column Bus)
Taillight
7.5ARR A/CMultiplex Communication System (BEAN - Steering Column Bus)
Rear Air Conditioning
7.5ARR ACCAudio System
Clock (w/ LEXUS Navigation System)
Interior Light
LEXUS Navigation System
LEXUS Parking Assist (Rear View Monitor)
Multiplex Communication System (BEAN - Steering Column Bus)
7.5ARR ECU-BAudio System
Clock (w/ LEXUS Navigation System)
Interior Light
LEXUS Navigation System
LEXUS Parking Assist (Rear View Monitor)
Multiplex Communication System (BEAN - Steering Column Bus)
Rear Air Conditioning
7.5ARR IGClock (w/ LEXUS Navigation System)
LEXUS Navigation System
LEXUS Parking Assist (Clearance Sonar)
LEXUS Parking Assist (Rear View Monitor)
Pre-Collision Safety System
10AFUEL OPNFuel Lid Opener
Luggage Compartment Opener and Closer
Multiplex Communication System (BEAN - Steering Column Bus)
15ARR S/SHADEMultiplex Communication System (BEAN - Steering Column Bus)
Rear Sunshade
30AAMP.P P/SEATAudio System
30AP P/SEATPower Seat (Front Passenger's Seat)
30ARR SEAT LHPower Seat (Rear Passenger's Seat)
30ARR SEAT RHPower Seat (Rear Passenger's Seat)
30ARR S/HTRClimate Control Seat (Rear)
Seat Heater (Rear)
30AS/ROOFMoon Roof
Pre-Collision Safety System

SYSTEM DIAGRAM
Fig. 1: Garage Door Opener System Diagram

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
DESCRIPTION
A maximum of 3 kinds of transmitter code based systems (example: garage doors, gates and entry gates) can be

registered with the vehicle's garage door opener. After registration, the vehicle's garage door opener can mimic
the signal of the transmitter systems and the original transmitters of each transmitter system are not needed.
1.RESISTER TRANSMITTER CODE
HINT:
The vehicle's garage door opener records transmitter codes for systems such as garage doors, gates,
entry gates, door locks, home lighting systems, security systems or other transmitter code based
systems.
The garage door opener is built into the dome lamp No. 1. If replacing the dome lamp No. 1,
transmitter codes for any systems previously registered in the garage door opener must be re-
registered.
a. Re-register systems in the garage door opener registration mode.
HINT:
3 transmitter codes can be registered with the garage door opener, one transmitter code for
each of the 3 garage door opener switches.
Disconnecting the battery will not erase the transmitter codes registered with the garage door
opener.
An attempt to overwrite a previously registered transmitter code with a new system's
transmitter code may fail. In these situations, the previously registered transmitter code will
not be erased.
1. Select a
garage door opener switch for transmitter code registration.

Fig. 2: Selecting Garage Door Opener Switch For Transmitter Code Registration
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
2. Press and hold the selected switch for 20 seconds. The garage door opener will enter
registration mode.
HINT:
Before entering registration mode, the LED is ON. After entering registration mode, the LED
flashes at a cycle of 1 Hz. For a "rolling code" type system, after entering registration mode,
the LED flashes at a cycle of 8.8 Hz for 1.6 seconds, and then the LED flashes at a cycle of 1
Hz.
3. After the garage door opener has entered registration mode, bring the original transmitter of
the system to be registered within 1 to 3 inches of the garage door opener and press and hold
one of the
garage door opener switches. Then press the original transmitter switch.

Fig. 3: Holding Garage Door Opener Switches
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
4. If the transmitter code registration was successful, the LED of the garage door opener flashes
at a cycle of 5.6 Hz. If no malfunction occurs, release both the garage door opener switch and
the original transmitter switch.
HINT:
If transmitter code registration fails: 1) the original transmitter's battery may be low or need
to be replaced, or 2) the system you are trying to register may not be compatible with the
garage door opener.
Some transmitter's signals stop after 1 to 2 seconds. For these types of transmitters: 1) press
and hold one of the garage door opener switches, and 2) press and release (cycle) the
transmitter switch every 2 seconds. Check if the transmitter code was successfully registered.
After entering the garage door opener registration mode, transmitter code registration must
be completed within 90 seconds. If 90 seconds elapses, the garage door opener will enter low
power mode (see step c).
Timing chart of registration mode:

Fig. 4: Timing Chart Of Registration Mode Blinking Pattern
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Erase transmitter codes in the garage door opener clear mode.

Fig. 5: Erasing Transmitter Codes In Garage Door Opener Clear Mode
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
HINT:
All 3 registered transmitter codes will be erased. No option exists for only erasing one transmitter
code.
1. Press and hold the left and right switches of the garage door opener for 20 seconds. The LED
will begin to flash at a cycle of 5.6 Hz. Releasing the switches will end clear mode.
HINT:
If the switches are released within 10 seconds after the transmitter codes have been erased,
the garage door opener will enter registration mode.
If the switches are held for 10 seconds or more after the transmitter codes have been erased,
default codes will be set to the 3 switches of the garage door opener. Using these default
codes, operation of the garage door opener can be checked using a tester.
Timing chart of clear mode:
Fig. 6: Timing Chart Of Clear Mode Blinking Pattern

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
c. Low power mode:
1. If a garage door opener switch is held for 75 seconds or more, the garage door opener will
enter low power mode to economize on power consumption. When the garage door opener
has entered low power mode, the LED turns off.
1.INSPECT GARAGE DOOR OPENER
a. Press the switch and check that each red LED turns on. If one or more of the switches does not turn
on the LED, confirm normal operation of the fuse and wire harness, then replace the
garage door

opener.
Fig. 7: Inspecting Garage Door Opener

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
2.INSPECT GARAGE DOOR OPENER REGISTRATION AND TRANSMITTING
HINT:
Use the KENTMORE home link tester and a tester transmitter for this test. First erase the customer's
transmitter code, and then register the tester transmitter code.
a. Check if the tester transmitter code was successfully registered.
HINT:
If the code cannot be re
gistered, replace the garage door opener.

Fig. 8: Checking Tester Transmitter Code Was Successfully Registered
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Press the garage door opener switch that was registered to the tester transmitter. Check if the home
link tester's green LED illuminates.
HINT:
If the green LED does not illuminate, replace the garage door opener.