Carprog Lexus Immobilizer Key Programming Guide

This article show Lexus immobilizer key programming by carprog.

 

Support Lexus Models & Years

Lexus Models Year Transponder Key Type
ES330 1998-2001

2002-2004

TEX

TEX

ES330 2004- TEX/CR
GS300 1998- TEX
GS300 1998-2000 TEX
GS400 2001- TEX
GX470 2004- TEX/CR
IS200 2000-2004 TEX
IS300 2000-2004 TEX
LS200 1997-1999

1999-

TEX

TEX

LS400 1997-1999 TEX
LX450 1997-1999

1999-

TEX

TEX

LX470 1999-

1999-2004

2004-

TEX

TEX

TEX

RX300 1999- TEX/CR
RX330 1999- TEX
SC300 1997-1999

1999-

TEX

TEX

SC400 1997-1999 TEX
SC430 2004- TEX/CR

 

Carprog Related Contents:

Carprog Software Free Download

Carprog Software Installation Guide

Caprog Clone

 

 

Older Lexus immobiliser system with separated immo box and Texas transponder (4D by Silca). Immobiliser box are located near to ignition key. Usually this is black or brown box marked “immobilizer” or “134.2 kHz”.

Carprog Lexus Immobilizer Key Programming Guide (1) Carprog Lexus Immobilizer Key Programming Guide (2)

 

Remove immobiliser ECU from the car and open it. Find 93C66 EEPROM in DIP package. Use A5 or A4 adapter and follow CarProg instruction to program transponder key. Short quartz resonator for in-circuit EEPROM programming or remove 93C66 from immobiliser board.

 

Lexus immobiliser system with transponder antenna and AMP unit on the ignition key and motor ECU. Used in 1999 – 2003 Lexus cars.

Carprog Lexus Immobilizer Key Programming Guide (3)

Transponder information is stored in motor ECU. Remove motor ECU from the car, open it and find 93C56 EEPROM marked IC900. Use A6 or A4 adapter and follow CarProg instruction to program transponder key. Short quartz resonator for in-circuit EEPROM programming or remove 93C56 from ECU board.

 

New Lexus cars with Texas Crypto transponder (4D by Silca). Transponder key is stored in separated immobiliser unit marked “ECU IMMOBILIZER”. Remove immobiliser ECU from the car, open it and find 93LC66 SMD EEPROM.

Carprog Lexus Immobilizer Key Programming Guide (4) Carprog Lexus Immobilizer Key Programming Guide (5)

 

Use only original factory key. With Silca 4D transponder car will not start.

Use A6 or A4 adapter and follow CarProg instruction to program transponder key.

Short quartz resonator for in-circuit EEPROM programming or remove 93C66 from immobilizer board.