2005 LEXUS ES300 reset

August 26, 2002IMMOBILIZER KEY CODE RESET ± SS002-01 Revised
Page 4 of 6
2. Using TIS, select Immobilizer Reset, and complete the request form to retrieve a
ªPasscode Number.º
A. Click on Diagnostics.
B. Click on Immobilizer Reset.
FIGURE 3. SELECTING IMMOBILIZER RESET ON TIS
A
B
C. Read the instructions on the screen and click on Continue.
(See Figure 4 below.)
FIGURE 4. IMMOBILIZER RESET INSTRUCTIONS ON TIS
C
Key Code
Reset
Procedure
(Continued)

August 26, 2002IMMOBILIZER KEY CODE RESET ± SS002-01 Revised
Page 5 of 6
D. Complete the request form and enter the ªSeed Numberº from the Diagnostic
Tester. Click on Submit (Figure 5).
FIGURE 5. REQUEST FORM ON TIS
NOTE:
All fields must be completed.
D
E. TIS will now return the Passcode that needs to be entered into the Diagnostic Tester.
FIGURE 8. RECEIVING PASSCODE FOR DIAGNOSTIC TESTER
NOTE:
The Passcode given by TIS is only valid for one Immobilizer Reset Event.
E
Key Code
Reset
Procedure
(Continued)

August 26, 2002IMMOBILIZER KEY CODE RESET ± SS002-01 Revised
Page 6 of 6
3. Using the numbered keys (0±9) on the Diagnostic Tester, enter the ªPasscode
Numberº received from TIS. (See Figure 7 below.) Press ENTER to clear all
registered key codes.
NOTE:
Key Code Reset takes approximately 16 minutes.
ABC
RESET COMPLETE
If the engine starts,
this key code is
registered correctly.
KEY CODE RESET
Please insert PASSCODE
NUMBER from TIS
PASSCODE NUMBERKEY CODE RESET KEY CODE RESET
**NOW RESETTING**
If the key was in the IG
cylinder, do not remove it.
Remaining Time
<16> Min.
PRESS [ENTER]
000414
PRESS [ENTER] FIGURE 7. PASSCODE ENTRY SCREEN FLOW
4. Confirm successful Immobilizer reset and new Master Key registration by starting
the vehicle.
NOTE:
If the vehicle starts, the new Master Key code is registered correctly.
If the vehicle does not start, perform the Immobilizer Reset function again.
5. All previously registered key codes have been erased except the Master Key used
during ªKey Code Reset.º
Register any additional customer keys by using ªKey Registration.º
Each key will start the engine if registered correctly.
Please refer to TSIB No. SS006±99,
ªScantool Immobilizer Key Code Utility,º for
additional detail on this procedure.
2: KEY CODE ERASURE
3: AUTO REG CLOSUREKEY CODE UTILITY
1: KEY REGISTRATION
A
FIGURE 8. KEY REGISTRATION
9: KEY CODE RESET
(See TSIB No. SS006±99) Key Code
Reset
Procedure
(Continued)

Lexus Supports ASE CertificationPage 1 of 14
Title:
DIAGNOSTIC TESTER
IMMOBILIZER FUNCTIONS
Models:
Applicable ES 330, GS 300, GS 430, GX 470,
LS 430, LX 470, RX 330, & SC 430
Technical Service
Information Bulletin
July 6, 2001
SS005-01
TSIB REVISION NOTICE:
August 26, 2005: The model years for each model have been specifically defined
in the ªApplicable Vehiclesº section. The following vehicles have been added to
the ªApplicable Vehiclesº section: ES 330, GS 300, GS 430, and RX 330.
The ªRequired SSTsº section has been updated.
January 9, 2003: GX 470 and LX 470 have been added to Applicable Vehicles.
The ªRequired SSTsº section has been updated to the current version software.
Screen flows revised (screen C and D) in Figures 1 (screen C and D), 2 (screen C),
3 (screen C), 4 (screen C and G), and 9 (screen A).
The information contained in this TSIB supercedes the original SS005±01.
Previous versions of this TSIB should be discarded.
The Diagnostic Tester incorporates support for Immobilizer system service. This bulletin
covers the following Immobilizer functions available using the Diagnostic Tester:
Transponder Key Type
Transponder Code Registration
Transponder Code Erasure
Transponder ECU Reset
Transponder ECU Replacement
Engine ECU Replacement
NOTE:
The available functions and procedures for the models listed in this TSIB differ
slightly from previous models and other Immobilizer systems currently in use on
Lexus vehicles.
OP CODEDESCRIPTIONTIMEOFPT1T2
N/ANot Applicable to Warranty ±±±±
SPECIAL SERVICE TOOLS
Introduction
Warranty
Information

DIAGNOSTIC TESTER IMMOBILIZER FUNCTIONS ± SS005-01 Revised July 6, 2001
Page 3 of 14
1. Transponder Key Type
Before any Immobilizer functions are performed, verify the type of transponder key
that you are attempting to use for the service operation. Some functions may only be
performed with a registered Master Key.
2. Transponder Code Registration
This function allows the registration of additional transponder keys (Master or Sub)
using a registered Master Key.
3. Transponder Code Erasure
This function allows the user to erase all the transponder keys except the registered
Master Key used during this function.
4. Transponder ECU Reset
This function allows the registration of a new Master Key even if all original Master
Keys are lost. Once the Immobilizer system is reset, all previous registered keys will
be erased.
5. Transponder ECU Replacement
When the Transponder ECU is replaced, the transponder keys must be registered to
the new ECU, auto registration closed, and ECU communication completed.
6. Engine ECU Replacement
When the Engine ECU is replaced, ECU communication must be completed to
synchronize an encrypted security code between the engine and Transponder ECUs.Function
Description

DIAGNOSTIC TESTER IMMOBILIZER FUNCTIONS ± SS005-01 Revised July 6, 2001
Page 6 of 14
1: CODES (ALL)
2: ENGINE AND ECT
3: TIRE PRES WARN
4: ABS / VSC
5: CCS
6: AIR CONDITIONER
7: IMMOBILIZER
8: SRS AIRBAG
9: GATEWAY
A
FUNCTION SELECT
B
1: OBD/MOBD
2: ENHANCED OBD II
3: CARB OBD II
4: BREAK OUT BOX
5: NVH
6: AUTOPROBE
7: O2 RPM CHECK
8: SNAPSHOT REVIEW
9: SETUP
0: GAS ANALYSIS
OBD/MOBD MENU
FIGURE 2. REGISTRATION OF ADDITIONAL TRANSPONDER KEY
1: TRANSP CODE REG
2: TRANSP CODE ERS
D
ID UTILITY
IMMOBILIZER
EF
GH
THIS FUNCTION WILL
REGISTER THE
TRANSPONDER CODE.
Do you wish to
continue the
registration?
PRESS [YES] OR [NO] 9: TRANSP CODE RESETPlease remove the
Master Key from
the IG cylinder,
insert it again,
and turn the IG ON
within 120 seconds.
Then press [ENTER]
Remaining Time:
[120] Seconds
Please remove the Master
Key from the IG cylinder
within 20 seconds.
Then press [ENTER]
Remaining Time:
[20] SecondsPlease insert the New Key
into the IG cylinder within
10 seconds.
Remaining Time:
[10] Seconds
I
**NOW REGISTERING**
[60] SecondsPlease wait.
J
K
THE TRANSPONDER
CODE WAS REGISTERED
CORRECTLY.Please insert a
Master Key and
turn the IG to
ON.
If the ignition
is already ON,
please turn it
OFF and back to
ON.
DO NOT TURN IG ON
PRESS [ENTER]
PRESS [ENTER]
C
DIAGNOSTIC MENU
IMMOBILIZER
5: ID UTILITY 1: DATA LIST
2: DTC INFO
3: ACTIVE TEST
4: SNAPSHOT
Operation
Procedure
(Continued)
TRANSPONDER
CODE
REGISTRATION

DIAGNOSTIC TESTER IMMOBILIZER FUNCTIONS ± SS005-01 Revised July 6, 2001
Page 7 of 14
3. Transponder Code Erasure
This function allows the user to erase all the transponder keys except the registered
Master Key used during this function.
NOTE:
This function requires the use of one registered Master Key. The use of a Sub Key will
NOT complete Transponder Code Erasure.
A. Insert a registered Master Key into the ignition cylinder and turn to the ON position.
B. Follow the screen flow in Figure 3 below to erase all Master or Sub keys, except
the registered Master Key used for this procedure.
1: CODES (ALL)
2: ENGINE AND ECT
3: TIRE PRES WARN
4: ABS / VSC
5: CCS
6: AIR CONDITIONER
8: SRS AIRBAG
9: GATEWAY
A
FUNCTION SELECT
B
1: OBD/MOBD
2: ENHANCED OBD II
3: CARB OBD II
4: BREAK OUT BOX
5: NVH
6: AUTOPROBE
7: O2 RPM CHECK
8: SNAPSHOT REVIEW
9: SETUP
0: GAS ANALYSIS
OBD/MOBD MENU
7: IMMOBILIZER
FIGURE 3. ERASING TRANSPONDER CODES
1: TRANSP CODE REG
D
ID UTILITY
IMMOBILIZER
EF
GH
This function will
ERASE ALL
TRANSPONDER CODES
except the
Master key in the
IG cylinder.
PRESS OR [NO]
[YES]
2: TRANSP CODE ERS
9: TRANSP CODE RESETRemaining Time:
[120] Seconds
***NOW ERASING***
WARNING: Master Key
must be removed from
IG cylinder within 10
seconds or erasure will
not complete.ALL TRANSPONDER
CODES EXCEPT THE
INSERTED MASTER
KEY'S TRANSPONDER
CODE WERE ERASED.
PRESS DO YOU WISH TO
CONTINUE ERASING?
Remaining Time:
[10] Seconds
[ENTER]Please remove the
Master Key from
the IG cylinder,
insert it again,
and turn the IG ON
within 120 seconds.
Then press [ENTER]
C
DIAGNOSTIC MENU
IMMOBILIZER
5: ID UTILITY1: DATA LIST
2: DTC INFO
3: ACTIVE TEST
4: SNAPSHOT
Operation
Procedure
(Continued)
TRANSPONDER
CODE ERASURE

DIAGNOSTIC TESTER IMMOBILIZER FUNCTIONS ± SS005-01 Revised July 6, 2001
Page 8 of 14
4. Transponder ECU Reset
This function allows the registration of a new Master Key even if all original Master
Keys are lost. Once the Immobilizer system is reset, all previous registered keys will
be erased. Use a new transponder Master Key to complete Transponder ECU Reset.
Immobilizer Reset
The Immobilizer Reset function is a 4-step process:
A. Using the Diagnostic Tester, retrieve a ªSeed Numberº through the OBD/MOBD
Immobilizer function.
A ªSeed Numberº is a unique number provided by the Diagnostic Tester and
validated at TMS in order to return a Passcode.
B. Using the TIS (Technical Information System) workstation, select Immobilizer
Reset, and complete the request form to retrieve a ªPasscode Number.º
A ªPasscode Numberº is a unique number required by the Diagnostic Tester
to reset the ECU allowing it to accept a new Master Key.
C. Enter the ªPasscode Numberº received from TIS into the Diagnostic Tester,
register any additional customer keys, and close auto registration mode.
D. Confirm successful Immobilizer reset and new Master Key registration.Operation
Procedure
(Continued)
TRANSPONDER
ECU RESET