Lexus model
|
Year
|
Transponder key type
|
Instruction
|
ES300
|
1998-2001
|
TEX
|
S4.2.1
|
2002-2004
|
TEX
|
S4.2.2
|
|
ES330
|
2004-
|
TEX/CR
|
S4.2.3
|
GS300
|
1998-
|
TEX
|
S4.2.1
|
GS300
|
1998-2000
|
TEX
|
S4.2.2
|
GS400
|
2001-
|
TEX
|
S4.2.1
|
GX470
|
2004-
|
TEX/CR
|
S4.2.3
|
IS200
|
2000-2004
|
TEX
|
S4.2.2
|
IS300
|
2000-2004
|
TEX
|
S4.2.2
|
LS200
|
1997-1999
|
TEX
|
S4.2.1
|
1999-
|
TEX
|
S4.2.2
|
|
LS400
|
1997-1999
|
TEX
|
S4.2.1
|
1999-
|
TEX
|
S4.2.2
|
|
LX450
|
1997-1999
|
TEX
|
S4.2.1
|
1999-
|
TEX
|
S4.2.2
|
|
LX470
|
1999-2004
|
TEX
|
S4.2.2
|
2005-
|
TEX/CR
|
S4.2.3
|
|
RX300
|
1999-
|
TEX
|
S4.2.2
|
RX330
|
1999-
|
TEX/CR
|
S4.2.3
|
SC300
|
1997-1999
|
TEX
|
S4.2.1
|
1999-
|
TEX
|
S4.2.2
|
|
SC400
|
1997-1999
|
TEX
|
S4.2.1
|
1999-
|
TEX
|
S4.2.2
|
|
SC430
|
2004-
|
TEX/CR
|
S4.2.3
|
S4.2.1 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”.
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.
S4.2.2 Lexus immobiliser system with
transponder antenna and AMP unit on the ignition key and motor ECU. Used in
1999 – 2003 Lexus cars.
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.
S4.2.3 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.
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 immobiliser
board.
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