Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSVOLKSWAGEN2001GTI (1J1) L4-1.8L TURBO (AWD)REPAIR AND DIAGNOSISBODY AND FRAMEBODY CONTROL SYSTEMSTESTING AND INSPECTIONCENTRAL LOCKING SYSTEM (VEHICLES WITHOUT POWER WINDOWS)ADAPTATION (FUNCTION 10)
2001 Volkswagen GTI (1J1) L4-1.8L Turbo (AWD)
Adaptation (Function 10)
2001 Volkswagen GTI (1J1) L4-1.8L Turbo (AWD)SECTION Adaptation (Function 10)
NOTES:
- If new or additional ignition keys are required they must be matched (adapted) to the immobilizer (if equipped) and central locking control electronics.
- The matching procedure must always be carried out for all the ignition keys including the existing ones.
- The number of keys already matched will be displayed when the adaptation (matching) function is selected.
- The matching can be interrupted with the "C" key of the VAG 1551.
- With the introduction of this generation of central locking it is possible to program additional functions. The functions and the programming are described "Function Variations". Function Variations
- Adaptation can be interrupted with the -C- button of the VAG 1551.
WARNING!
The VAG 1551 dealership number (workshop code) will be stored in the immobilizer control module when matching ignition keys.
Requirements
- All ignition keys available. If no old ignition key is available see Lost key procedure.
- Key fob with covered secret number may be available, if not see "Establishing secret number".
- Insert correct profile ignition key in ignition lock.
- Connecting scan tool. VAG 1551 Scan Tool Connecting
Initiate OBD. Initiating On Board Diagnostic Program
The adaptation shown here is only an example.
Indicated on display
Rapid data transfer HELP
Select function XX
- Press buttons -1- and -0- to select "Adaptation" function 10.
Indicated on display
Rapid data transfer Q
10 - Adaptation
- Confirm entry with -Q- button.
Indicated on display
Adaptation
Enter channel number XX
- Press buttons -0- and -0- (all keys are erased with channel number 00).
- Confirm entry with -Q- button.
NOTE: It is not possible to match a new or additional key(s) without erasing existing programmed key(s).
Indicated on display
Adaptation Q
Clear learned values?
- Confirm entry with -Q- button.
Indicated on display
Adaptation ->
Learned values are Cleared
- Press -> button.
Indicated on display
Rapid data transfer HELP
Select function XX
- Press buttons -1- and -0- to select "Adaptation" function 10.
Indicated on display
Rapid data transfer Q
10 - Adaptation
- Confirm entry with -Q- button.
Indicated on display
Adaptation
Enter channel number XX
- Press buttons -0- and -1- (all keys are programmed with channel number 01).
Indicated on display
Adaptation Q
Enter channel number 01
- Confirm entry with -Q- button.
Indicated on display
Channel 1........Matching 1 ->
Key 1 <-1 3->
The top line displays number of keys to be programmed (standard = 1). Select number of keys with buttons 1 and 3.
- Press -> button.
Indicated on display
Channel 1........Matching 1 ->
Enter matching value XXXXX
- Press -0- button four times and then enter number of all ignition keys to be matched, including existing key, (e.g. 00003); max. possible = Qty. 4.
- Press -> button.
Indicated on display: Number of keys to be programmed.
Channel 1 Matching 3 Q
Key 3 <-1 3->
- Confirm entry with -Q- button.
Indicated on display
Channel 1 Matching 3 Q
Store changed value?
- Confirm entry with -Q- button.
Indicated on display
Channel 1 Matching 1 ->
Changed value is stored
- Press -> button.
Indicated on display
Rapid data transfer HELP
Select function XX
- Press a button once on each key to be programmed (in example above, 3 keys).
- Switch ignition off and remove ignition key.
- Perform functional check (e.g. 3) of keys.
NOTE:
- All 3 keys (see example) can be programmed in one adaptation sequence.
- Adaptation of all keys (pressing a button) must occur within 15 seconds.
- Successful adaptation can be confirmed in "Read measured value block", function 08, display group 009. When operating the key(s) the first two measured values must show "OK'. At the same time, the last measured value must show the position of the key (first, second, third, fourth key).
- If the remote key is operated several times the third display "no measured value" changes to "OK.".
The programming of ignition keys is automatically terminated when:
- The number of keys to be programmed is reached.
- A button of one of the keys to be programmed is pressed frequently.
- The permissible matching period of 15 seconds is exceeded (DTC is stored).
- Press buttons -0- and -2- to select "Check DTC memory" function 02.
If no DTC is stored, programming of keys has been successfully completed.
- Press buttons -0- and -6- to select "End output" function 06.
Indicated on display
Rapid data transfer Q
06 - End output
- Confirm entry with -Q- button.
Indicated on display
Rapid data transfer HELP
Select function XX
- Switch ignition off and disconnect VAG 1551 scan tool from Data Link Connector (DLC).
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.