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Transponder chip guide

Which chip a car uses, what each chip is also called, and whether a key can be copied from a working one or has to be programmed. Find the chip by make and year below, then match it on the listing before you order.

Based on verified key generations of 20 makes (two sources for every line), the chip makers' documents and the main locksmith references. Listing counts are live from the DKEY1 catalogue. Updated November 2026.

Which chip does each make use?

One line per chip: from the first to the last model year a verified key generation names it. A make runs several chips at once across its models, so check the exact model on its page.

Toyota
Lexus
  • 4C1997 - 2005
  • 4D-682001 - 2010
  • 4D 80-bit2009 - 2020
  • 8A (H)2013 - today
Hyundai
Kia
Nissan
Infiniti
Honda
Mitsubishi
Suzuki
Mazda
Ford
Chevrolet
GMC
Jeep
Dodge
Volkswagen
BMW
Land Rover
Peugeot
Renault

Smart keys and blade keys of the same car can use different chips, and markets differ. Typical spans, not exact cut-over dates.

Find the key for an exact model

Same number, different chip

Silca and European catalogues number some chips differently from Xhorse, KEYDIY and Autel. Order by the chip family, not the number alone.

NumberXhorse, KEYDIY, AutelSilca, European catalogues
ID47HITAG 3 (Hyundai, Kia, Honda)HITAG Pro (Ford, BMW)
ID49HITAG Pro (Ford, BMW, Mazda)Honda HITAG 3 key (ID49-1C)
72Toyota G chip (80-bit)A Kawasaki 40-bit chip
6AAES smart key chip (Mazda, Hyundai, Kia)ID6A is a Ford DST40 Plus chip; the AES 6A is ID90

The letter after an NXP part number names the family

PCF7953M, PCF7953P and PCF7953X are three different chips. A number without its letter can be any of them.

A
HITAG 2 (ID46)
E
HITAG 2 Extended (46E)
X
HITAG 3 (ID47)
P
HITAG Pro (ID49)
M
HITAG AES (4A)

Cross-reference

The same chip goes by several names: the industry ID, the chip maker's family, the part number and each brand's code.

ChipAlso calledMakerCopy from a working keyMain makesIn the catalogue
ID46HITAG 2, Philips Crypto 2, PCF7936NXP (Philips)YesNissan, Hyundai, Kia, Honda, GM, Chrysler, BMW, Peugeot471 listings
ID46E (46 Extended)HITAG 2 Extended, 46E, PCF7937ENXPNo, programChevrolet, GMC, Buick, Cadillac (about 2010 on)4 listings
ID47HITAG 3, PCF7938, NCF2952X / NCF29A1XNXPSome keysHyundai, Kia, Honda, Suzuki, Mitsubishi435 listings
4AHITAG AES, ID4A, PCF7939M / PCF7953M / PCF7961MNXPNo, programNissan, Infiniti, Kia, Hyundai, Jeep, Honda, Peugeot442 listings
ID49HITAG Pro, PCF7939P / PCF7939FA, PCF7945P / PCF7953PNXPNo, programFord, BMW, Mazda, Land Rover, GM (2020 on)153 listings
MQB49VAG 5C / 5D, ID5C (Xhorse, Autel)VAG-specific (chip maker not confirmed)No, programVolkswagen, Audi, Skoda, SEAT (about 2019 on)4 listings
4CTexas fixed 4C, ID4C, TI fixed codeTexas InstrumentsYesToyota, Lexus, Ford, Suzuki1 listings
4D (40-bit)Texas Crypto, DST40, 4D-60 / 61 / 62 / 63 / 64 / 65 / 67 / 68 / 70Texas InstrumentsYesToyota, Lexus, Ford, Mazda, Nissan, Hyundai, Kia, Chrysler107 listings
4D-63 80-bitID83, 4D83, DST80Texas InstrumentsYesFord, Lincoln, Mazda
4D-60 80-bitHyundai / Kia 80-bit, 70 (4D-80) on Xhorse, DST80Texas InstrumentsYesHyundai, Kia
G (4D-72)Toyota G, 4D-72, 72G (Xhorse)Texas InstrumentsSome keysToyota, Scion, Subaru, Daihatsu11 listings
8A (H chip)Toyota H, DST-AES, ID8ATexas InstrumentsSome keysToyota, Lexus, Hyundai, Kia, Subaru185 listings
6AID6A (Chinese tools), AES smart key chip, Silca ID90Sources disagree on the makerNo, programMazda, Hyundai, Kia26 listings
ID48Megamos Crypto 48, Megamos 48, JMA TP08EM Microelectronic (Megamos)YesVolkswagen, Audi, Volvo, Fiat, Seat, Skoda14 listings
MQB48 (Megamos AES)Megamos AES, ID88 (Silca), Xhorse XT1MEM Microelectronic (Megamos)No, programVolkswagen, Audi, Skoda, SEAT, Fiat, Jeep10 listings
ID13Megamos 13, Megamos fixed, JMA TP05EM Microelectronic (Megamos)YesGM, Honda, Acura, Volkswagen, Audi1 listings
ID33Philips 33, PCF7930 / PCF7931Philips (NXP)YesVolkswagen, BMW, Opel, Nissan, Renault
ID44 (and ID40, ID42)PCF7935, Philips Crypto, VAG W3Philips (NXP)Some keysVolkswagen, BMW, Opel, Mitsubishi5 listings

Chip by chip

What each chip is, where it is fitted, how a key is made, and the keys we carry for it.

ID46

HITAG 2, Philips Crypto 2, PCF7936, PCF7941A / 7946A / 7952A / 7953A

ID46 is NXP's HITAG 2 transponder, the most widely used chip of the 2000s and early 2010s. Nissan, Hyundai, Kia, Honda, GM, Chrysler, BMW, Peugeot, Renault and Mitsubishi all fitted it, in blade keys and inside remote and smart key boards.

  • Maker: NXP (Philips)
  • Crypto: HITAG 2, 48-bit secret key
  • Copy: Yes

How a key is made: Clones with the working key and the car: the tool collects data at the ignition, then calculates. Chips: Xhorse XT27A / XT27B, KEYDIY KD super chip, CN900 CN3, JMA TPX4, Silca ID46.

Watch for

  • A copy needs the car as well as the key: it is never a key-only job, and it is not an all-keys-lost method.
  • Copying a remote board (PCF7941 / 7945 / 7946) copies only the transponder; the buttons are programmed separately.
Shop ID46 keys(471)

ID46E (46 Extended)

HITAG 2 Extended, 46E, PCF7937E, PCF7952E / 7961E

ID46E is the extended version of HITAG 2 that GM moved to from about 2010, on Chevrolet, GMC, Buick and Cadillac keys. It is not the same as a plain ID46, even on the same models.

  • Maker: NXP
  • Crypto: HITAG 2 authentication with extended memory
  • Copy: No, program

How a key is made: Treat it as program-only: generate an E-type chip (Xhorse XT27A "New ID46 (4E)", XT57B, OEM PCF7937E) and add it through the OBD port.

Watch for

  • GM "Circle Plus" keys (B111, about 2004 to 2017) are plain ID46, not 46E. A plain ID46 blank will not start a 46E car.
  • Some GM 46E systems step a counter on each start, so a copy and the original drift apart: add keys through OBD.
Shop ID46E keys(4)

ID47

HITAG 3, PCF7938, NCF2952X / NCF29A1X, PCF7953X / 7961X

ID47 is NXP's HITAG 3 transponder. Hyundai and Kia fit it to most remote and smart keys from about 2015, Honda uses it from about 2013 (the Honda "G" key), and Suzuki and Mitsubishi use it on later models.

  • Maker: NXP
  • Crypto: HITAG 3, 96-bit secret key
  • Copy: Some keys

How a key is made: Only the Honda "G" blade key is a known clone (Silca / Ilco T49 solution, some with car data first). Hyundai, Kia and smart keys are programmed.

Watch for

  • Silca and European catalogues call the Honda HITAG 3 key "ID49"; Chinese tools call it ID47. Check the family name, not the number.
  • Some Nissan keys sold as ID47 read as 4A (HITAG AES) on a programmer: read the chip first.
Shop ID47 keys(435)

4A

HITAG AES, ID4A, PCF7939M / PCF7953M / PCF7961M, NCF29A1M

4A is NXP's HITAG AES chip, built to stop cloning. Nissan and Infiniti use it from about 2014, Jeep, Dodge, Peugeot and Renault from about 2014 to 2016, Hyundai and Kia from about 2019, and Honda from 2018 on the Accord.

  • Maker: NXP
  • Crypto: AES, 128-bit key
  • Copy: No, program

How a key is made: Not cloned: program the key to the car through OBD (PIN or security access; Stellantis cars may need a gateway bypass). Blanks: M-suffix chips, Xhorse XT27B / XT57B in 4A mode.

Watch for

  • 4A (NXP HITAG AES) and 8A (Texas Instruments DST-AES, Toyota H) are different chips, although both use AES.
  • Order by the full part number: PCF7953M is 4A, PCF7953P is ID49, PCF7953X is ID47.
Shop 4A keys(442)

ID49

HITAG Pro, PCF7939P / PCF7939FA, PCF7945P / PCF7953P, NCF2951F

ID49 is NXP's HITAG Pro chip. Ford and Lincoln use it from about 2015, BMW and Mini from about 2011, Mazda and Land Rover from about 2012, and GM's newest platforms from about 2020.

  • Maker: NXP
  • Crypto: HITAG Pro, 128-bit
  • Copy: No, program

How a key is made: Generate and program through OBD: Xhorse XT27B / XT57B in ID49 mode, OEM PCF7939FA, Autel IKEY, KEYDIY. Ford PATS and BMW FEM / BDC have their own routes.

Watch for

  • Silca and European catalogues call HITAG Pro "ID47": a Silca "ID49" blank is a Honda HITAG 3 chip, not a Ford or BMW ID49.
  • "ID49" on older VAG MQB parts means Megamos AES (MQB48), not HITAG Pro.
Shop ID49 keys(153)

MQB49

VAG 5C / 5D, ID5C (Xhorse, Autel)

MQB49 is the trade name of the VAG 5C and 5D immobilizer keys of Volkswagen, Audi, Skoda and SEAT from about late 2019 (5D on the Golf 8). It is not a plain ID49 and not MQB48.

  • Maker: VAG-specific (chip maker not confirmed)
  • Crypto: VAG immobilizer data tied to the car's components
  • Copy: No, program

How a key is made: No clone. Add a key only, from the original key's data or bought sync data, on a VAG-specific key or chip (Xhorse MQB smart key, XS remote, XT57B as ID5C). All keys lost goes to the dealer.

Watch for

  • Identify MQB48 and MQB49 by the original key's part number first: they are separate tool functions.
Shop MQB49 keys(4)

4C

Texas fixed 4C, ID4C, TI fixed code

4C is the Texas Instruments fixed-code chip of the late 1990s and early 2000s, on Toyota and Lexus keys to about 2006, early Ford PATS keys and Suzuki.

  • Maker: Texas Instruments
  • Crypto: Fixed code, no crypto
  • Copy: Yes

How a key is made: Clones offline from the key alone: Xhorse XT27A, KEYDIY 4C/4D chip, CN900 CN1, Tango LKP-02, JMA TPX1 / TP07, Silca T3.

Watch for

  • A fixed-code clone cannot be erased from the car later: tell the customer.
Shop 4C keys(1)

4D (40-bit)

Texas Crypto, DST40, 4D-60 / 61 / 62 / 63 / 64 / 65 / 67 / 68 / 70, ID60, ID63, ID67...

4D is the Texas Instruments 40-bit crypto family. The number after 4D is the car maker's configuration: 4D-60 (Nissan, Hyundai, Kia, Ford), 4D-61 (Mitsubishi), 4D-63 (Ford, Mazda), 4D-64 (Chrysler, Jeep), 4D-65 (Suzuki), 4D-67 and 4D-70 (Toyota), 4D-68 (Lexus).

  • Maker: Texas Instruments
  • Crypto: DST40, 40-bit key
  • Copy: Yes

How a key is made: Clones offline: the tool recovers the 40-bit key from the original. Chips: Xhorse XT27A, KEYDIY 4C/4D, CN900 CN2 or CN5, Tango LKP-02, JMA TPX2, Silca EH2.

Watch for

  • The sub-ID must match the car: a chip set to the wrong configuration reads as 4D but will not start it.
  • 4D-64 shows as 4E on Xhorse and CN900 tools: use a chip that supports 4E.
Shop 4D keys(107)

4D-63 80-bit

ID83, 4D83, DST80, TMS37145

4D-63 80-bit is the Ford and Mazda version of the TI 80-bit chip: Ford from about 2011 to 2017 in North America, and Mazda from about 2006 to 2015.

  • Maker: Texas Instruments
  • Crypto: DST80, 80-bit key
  • Copy: Yes

How a key is made: Clones to an 80-bit chip, usually with an online calculation: Xhorse XT27A (ID83), CN900 CN5, Tango LKP-02, JMA TP33, Silca T80.

Watch for

  • A 40-bit 4D-63 key will not program to an 80-bit car; an 80-bit key usually works in a 40-bit car.
  • Tools show 40-bit as 4D(63) and 80-bit as 4D(83).

4D-60 80-bit

Hyundai / Kia 80-bit, 70 (4D-80) on Xhorse, DST80

The 80-bit version of the TI chip is on many Hyundai and Kia blade and flip keys from about 2011 to 2019, between their ID46 and ID47 keys.

  • Maker: Texas Instruments
  • Crypto: DST80, 80-bit key
  • Copy: Yes

How a key is made: Hyundai and Kia 80-bit keys clone online to CN900 CN5, Tango LKP-02, Xhorse XT27A (4D 80-bit), JMA TP46.

Watch for

  • A 40-bit 4D-60 chip does not replace an 80-bit one.
  • An uncoded TI 80-bit blank must be coded with a tool before use.

G (4D-72)

Toyota G, 4D-72, 72G (Xhorse), DST80

The G chip is Toyota's 80-bit key, marked G on the blade, on most Toyota and Scion models from about 2010 to 2015 in North America and later in some other markets, and on Subaru and Daihatsu.

  • Maker: Texas Instruments
  • Crypto: DST80, 80-bit key
  • Copy: Some keys

How a key is made: Blade keys marked G clone to 80-bit chips, usually online: Xhorse XT27A, CN900 CN5, Tango LKP-02, JMA TPG1, Silca T80. G smart keys do not clone.

Watch for

  • Read the blade: G is 80-bit, H is 128-bit (8A). Same head shape, different chips.
  • 2010 to 2011 Corolla can be 4D-67 or G: read the key.
Shop G keys(11)

8A (H chip)

Toyota H, DST-AES, ID8A, 8A-AA / 8A-BA / 8A-A9

8A is the Texas Instruments 128-bit AES chip; Toyota stamps H on the blade of keys that carry it. It replaced the G chip on Toyota and Lexus from about 2013 to 2014, and Hyundai, Kia, Subaru and Volvo use it too.

  • Maker: Texas Instruments
  • Crypto: DST-AES, 128-bit
  • Copy: Some keys

How a key is made: Blade keys marked H clone, with a server calculation or tokens: Xhorse XT27A / XT27B, KEYDIY 8A chip, Tango LKP-04, Silca T128C, JMA TPAE1. Smart keys do not clone.

Watch for

  • 8A is a family: smart keys come as 8A-AA, 8A-BA or 8A-A9. Order by board number, FCC ID and part number.
  • Each 8A clone usually costs tokens or points on the tool.
Shop 8A keys(185)

6A

ID6A (Chinese tools), AES smart key chip, Silca ID90

6A is an AES smart key chip on the newer Mazda models from about 2019 (Mazda 3, CX-30) and on some Hyundai and Kia smart keys from about 2020.

  • Maker: Sources disagree on the maker
  • Crypto: AES
  • Copy: No, program

How a key is made: Not cloned: add the key through OBD with a tool whose coverage lists the exact model year.

Watch for

  • Silca's "ID6A" is a different chip (a Ford DST40 Plus chip): the 6A of Chinese tools is Silca ID90.
  • Hyundai and Kia moved from 8A to 6A on some models around 2020 to 2021: confirm by FCC ID.
Shop 6A keys(26)

ID48

Megamos Crypto 48, Megamos 48, JMA TP08, Silca T6

ID48 is the Megamos Crypto chip of Volkswagen, Audi, Seat and Skoda from about 1998 until MQB, of Volvo from about 2000 to 2012, and of Fiat and some GM and Honda models.

  • Maker: EM Microelectronic (Megamos)
  • Crypto: Megamos Crypto, 96-bit secret key
  • Copy: Yes

How a key is made: Clones with a server calculation, paid per job: Xhorse XT27A or XH48, KEYDIY KD48, CN900 CN6, Silca T48 (M-Box), JMA TPX8.

Watch for

  • Later VAG ID48 keys are precoded dealer keys tied to the car's components: a plain ID48 blank is not enough.
  • ID48 is a Megamos chip, not part of the HITAG family between ID47 and ID49.
Shop ID48 keys(14)

MQB48 (Megamos AES)

Megamos AES, ID88 (Silca), Xhorse XT1M

Megamos AES is the chip of the Volkswagen group MQB platform from about 2013 to 2015 (Golf 7, Audi A3, Passat B8, Tiguan), and of the Fiat 500X, Tipo and Jeep Renegade and Compass.

  • Maker: EM Microelectronic (Megamos)
  • Crypto: AES
  • Copy: No, program

How a key is made: Not cloned: program with component security data from the car (OBD or cluster), onto OEM keys, Xhorse XT1M, or XT27B / XT57B set to MQB48.

Watch for

  • Basic super chips (XT27A) cannot do MQB48: use XT27B, XT57B or XT1M.
Shop MQB48 keys(10)

ID13

Megamos 13, Megamos fixed, JMA TP05, Silca T5

ID13 is the Megamos fixed-code chip of GM PassKey 3 keys (about 1997 to 2008), North American Honda and Acura keys (about 1998 to 2006) and 1990s Volkswagen and Audi.

  • Maker: EM Microelectronic (Megamos)
  • Crypto: Fixed code, no crypto
  • Copy: Yes

How a key is made: Clones offline from the key alone: Silca T5, JMA TP05, Xhorse XT27A.

Watch for

  • Honda keys of the same years can be Megamos 13 in North America and ID48 in Europe: read the original key.
Shop ID13 keys(1)

ID33

Philips 33, PCF7930 / PCF7931

ID33 is the Philips fixed-code chip of the mid 1990s: Volkswagen, BMW and Opel from about 1995 to 1999, and early Nissan, Honda and Renault keys.

  • Maker: Philips (NXP)
  • Crypto: Fixed code, no crypto
  • Copy: Yes

How a key is made: Clones offline from the key alone: Silca T5, JMA TP01 / TP05, Xhorse XT27A.

Watch for

  • Some BMW EWS keys on ID33 run a rolling code and are not a plain copy.

ID44 (and ID40, ID42)

PCF7935, Philips Crypto, VAG W3, Silca T15

ID40, ID42 and ID44 are presets of the same Philips PCF7935 chip: ID40 on Opel and Vauxhall (about 1998 to 2004), ID42 and ID44 on Volkswagen group cars and ID44 on BMW EWS3 (about 1999 to 2006).

  • Maker: Philips (NXP)
  • Crypto: PCF7935 challenge-response crypto
  • Copy: Some keys

How a key is made: Usually made new rather than copied: produce a PCF7935 (Silca T15, Xhorse XT27A or XT15 in 7935 mode) with the right preset, then learn it to the car. Some cloners copy VAG ID44.

Watch for

  • The same PCF7935 chip covers ID33 to ID45: tell the tool which ID to produce.
Shop ID44 keys(5)

How to tell which chip a key has

Fastest first, before the car is in front of you.

  1. 1

    FCC ID or part number

    Printed on the back of a remote or smart key. Search it on dkey1.com: every listing states its chip.

  2. 2

    Make, model and year

    Open the car's page under Keys by vehicle. Where a year has two chips, the page lists both.

  3. 3

    Read it with a tool

    A chip reader or key programmer names the transponder in seconds when there is no FCC ID.

Questions

Is the Toyota H chip the same as 8A?

Yes. H is the letter Toyota stamps on the blade; 8A is the Texas Instruments DST-AES (128-bit) chip inside. G on the blade is the older 80-bit chip.

ID46 or ID47: how do I tell them apart?

Use the FCC ID or part number on the original key, or read the chip with a programmer. Hyundai, Kia and Honda moved from ID46 to ID47 between about 2013 and 2016, often at a facelift, so the year alone is not enough.

Is a 4D-60 chip the same as 4D-60 80-bit?

No. The 80-bit version is a different chip; a 40-bit 4D-60 will not start a car that expects 80-bit. The same applies to 4D-63 and 4D-63 80-bit on Ford and Mazda.

Why does a Silca ID49 blank not work on a Ford?

Silca numbers chips differently from Xhorse, KEYDIY and Autel. Silca's ID49 is the Honda HITAG 3 key; the Ford chip the tools call ID49 is HITAG Pro, which Silca calls ID47. Order by the chip family, not the number.

Can a 4A key be copied from a working key?

No. 4A (HITAG AES) was designed to stop cloning: a new key is programmed to the car through the OBD port. The same goes for ID49, 6A and Megamos AES.

What does the letter after a PCF or NCF part number mean?

It names the chip family: A is HITAG 2 (ID46), E is HITAG 2 Extended (46E), X is HITAG 3 (ID47), P is HITAG Pro (ID49) and M is HITAG AES (4A). A number without the letter, such as PCF7953, can be any of them.