VP44 control unit replacement

Hello,

Has anyone ever replaced the VP44 control unit?
In this case, I'm planning to replace the old, defective ESP with a used, functional one in order to be able to proceed with the coding or pairing process (WFSIII).

Thank you.

Hello,

You would need the pinouts for both the old and the new engine control unit.
http://wiki.ross-tech.com/wiki/index.php/Immobilizer_III_ECU_Swapping

It would be simpler to use an engine control unit with the WFS function disabled.

Best regards, Rainer.

Hello,

Thank you for your reply. I hope I've understood correctly, and that we're not talking past each other. My idea is to remove the control unit from the old ESP system and install it on the new (used) one. Since this is the control unit for the old ESP system, the MSG (Maintenance Schedule) shouldn't report any warnings related to the WFS (Water Flow Sensor), right?

Sure, here's the translation:

"cu" is a Spanish abbreviation for "cuánto," which means "how much." It's often used in online communication and text messages to ask for a price or quantity.

Okay, then I misunderstood.

Quote:

Instructions for replacing the fuel injection pump on vehicles equipped with Immobilizer III (VW/Audi/Seat/Skoda 2.5L V6 TDI) using VCDS Step 1: Determine the VIN and IMMO ID (Prerequisites for pump replacement) Select control unit: Start VCDS → [Select] → [01 - Engine] Option A (via the "Extra" field): In the first "Extra" field, two codes appear: VIN: 17-digit Vehicle Identification Number (first character string) IMMO-ID: 14-digit immobilizer identification number (second string). End with: [Close control unit] → [Back] OR Option B (based on measurements): [Measurements - 08] → Select block 081 → [Continue!] VIN: 17-digit number (first line) IMMO-ID: 14-digit number (second line) End with: [Finish, Back] → [Close control unit] Step 2: Replace the fuel injection pump Requirements: New fuel injection pump has been installed. Battery voltage ≥ 12.5 V The pin of the engine control unit (ECU) is present (e.g. B. can be read out by the dealer or a chip tuner). Execution: Open the control unit: [Select] → [01 - Engine] Registration on the immobilizer: [Registration - 11] → Enter the 4-digit PIN as a 5-digit number (e.g. PIN 1234 → 01234 (enter) Confirm with [Continue!] Adaptation for new pump: [Adjustment - 10] → Enter channel number 050 → [Read] Enter PIN again (again as a 5-digit number, e.g. B. 01234 Press the Save button. Completion: [Ready, Back] → [Close control unit] Instructions: PIN entry: Always add a leading zero (e.g., 1234 becomes 01234). In case of errors: Check the voltage, confirm the PIN, and repeat the process. Documentation: Securely store the VIN and IMMO-ID for later diagnoses. Use only genuine VCDS hardware for reliable results.

http://wiki.ross-tech.com/wiki/index.php/Immobilizer_III_Injection_Pump_Swapping