Advanced: Scenarios and What to Do

Question 1

Q11: Scenario: All Keys Lost for a Rolling Code Immobilizer System

Answer 1

A11:
Verify vehicle ownership.
Use a key programmer to reset the immobilizer system and clear all previous keys.
Program a new key, ensuring synchronization between the key and the rolling code system.
Test the key to ensure proper function.

Question 2

Q12: Scenario: Failed Key Programming Due to Wrong Transponder Type

Answer 2

A12:
Identify the correct transponder type required by the vehicle.
Obtain a blank key with the correct transponder type.
Reprogram the correct key using the key programmer.
Test the key to ensure it starts the vehicle and operates all functions.

Question 3

Q13: Scenario: Immobilizer Lockout After Multiple Failed Key Attempts

Answer 3

A13:
Use a diagnostic tool to verify that the immobilizer system is in lockout mode.
Reset the immobilizer system, following the specific procedure for the vehicle.
Reprogram a key once the system is reset.
Test the key to ensure it starts the vehicle.

Question 4

Q14: Scenario: ECU Replacement and Key Reprogramming

Answer 4

A14:
Install the new ECU in the vehicle.
Use a key programmer to sync the new ECU with the immobilizer system.
Reprogram the existing keys to the new ECU.
Test all keys to ensure they work with the new ECU.

Question 5

Q15: Scenario: Transponder Conversion Needed for a Specific Vehicle

Answer 5

A15:
Use a key programmer to read the existing transponder data.
Convert the transponder type to match the new vehicle’s requirements.
Program the converted key to the vehicle’s immobilizer system.
Test the key to ensure it starts the vehicle and operates all functions.

Question 6

Q16: Scenario: Keyless Entry System Malfunction After Key Programming

Answer 6

A16:
Check for interference from other wireless devices.
Use a diagnostic tool to scan for fault codes in the keyless entry system.
Reprogram the key fob to the vehicle, ensuring keyless entry functionality is restored.
Test the keyless entry system to ensure proper operation.

Question 7

Q17: Scenario: Immobilizer System Failure Due to Faulty Antenna Coil

Answer 7

A17:
Test the antenna coil’s resistance using a multimeter.
If faulty, replace the antenna coil with a new one.
Reprogram the key to the immobilizer system.
Test the key to ensure proper communication with the immobilizer.

Question 8

Q18: Scenario: Communication Error Between Immobilizer and ECU

Answer 8

A18:
Use a diagnostic tool to scan for communication-related fault codes.
Check wiring connections between the immobilizer and ECU.
Repair or replace any faulty wiring or components.
Reprogram the key if necessary and test for proper operation.

Question 9

Q19: Scenario: Aftermarket Key Not Working with Ford PATS System

Answer 9

A19:
Verify that the aftermarket key is compatible with the Ford PATS system.
Use a key programmer to perform a security wait time if required.
Reprogram the key to the PATS system.
Test the key to ensure it starts the vehicle and operates all functions.

Q20: Scenario: Volkswagen/Audi Component Protection Preventing Key Programming
A20:
Use a dealer-level diagnostic tool or online access to bypass component protection.
Reprogram the key to the immobilizer system.
Ensure component protection is properly handled to avoid issues with the new key.
Test the key to ensure it works correctly with the vehicle.

Q21: Scenario: Vehicle Won’t Start After Replacing the Battery
A21:
Check for any fault codes in the immobilizer system using a diagnostic tool.
Re-synchronize the key fob with the vehicle if needed.
Clear any fault codes and test the key to ensure it starts the vehicle.
Ensure all electrical connections are secure and functioning properly.

Question 10

Q20: Scenario: Volkswagen/Audi Component Protection Preventing Key Programming

Answer 10

A20:
Use a dealer-level diagnostic tool or online access to bypass component protection.
Reprogram the key to the immobilizer system.
Ensure component protection is properly handled to avoid issues with the new key.
Test the key to ensure it works correctly with the vehicle.

Question 11

Q21: Scenario: Vehicle Won’t Start After Replacing the Battery

Answer 11

A21:
Check for any fault codes in the immobilizer system using a diagnostic tool.
Re-synchronize the key fob with the vehicle if needed.
Clear any fault codes and test the key to ensure it starts the vehicle.
Ensure all electrical connections are secure and functioning properly.