Volkswagen · B5 / B5.5 · 1998–2005
Passat 1998–2005 engine ECU part numbers
4 engines, 3 ECU part-number families. Find the controller your car runs, then clone it onto a donor or adapt it remotely.
Engines and their ECUs
| Engine | Engine codes | ECU family | Part-number prefix |
|---|---|---|---|
| 1.8T 20v | AEB, ATW, AUG, AWM | Bosch ME7.1 / ME7.5 (Audi A4 B5 numbering) | |
| 2.8 V6 30v | ATQ | Bosch ME7.1 | |
| 4.0 W8 | BDN | Bosch ME7.1.1 — confirm by label | confirmed by label |
| 2.0 TDI PD (2004–2005) | BHW | Bosch EDC16U1 |
4.0 W8
BDN
Bosch ME7.1.1 — confirm by label
The part-number prefix is the family-level part of the label (for example 06J 906 026 CK). A donor must match the full number, which we confirm against your VIN for free before you buy.
Clone the Passat ECU — $350 flat
Mail your original and a donor with the same full part number. VIN, immobilizer data, coding and adaptations are copied across on the bench, typically within 24 hours of arrival. Factory immobilizer stays on.
Volkswagen engine ECU cloneOn-car software step — remote ODIS, $250
Some cars still want an on-car step after a module swap: a software version management (SVM) update, coding, or a basic-settings adaptation. Plug a J2534 pass-thru interface into the car and we run the factory ODIS software on it from our bench — no dealer visit. The same session covers coding after any other VW or Audi module replacement.
Book the VW / Audi remote sessionFrequently asked questions
Which engine ECU does a 1998–2005 Passat have?
It depends on the engine. The 1.8T 20v (AEB, ATW, AUG, AWM) runs Bosch ME7.1 / ME7.5 (Audi A4 B5 numbering), part-number prefix 8D0 906 018 or 4B0 906 018. The 2.8 V6 30v (ATQ) runs Bosch ME7.1, part-number prefix 4B0 906 018. The 4.0 W8 (BDN) runs Bosch ME7.1.1 — confirm by label — the part-number prefix is confirmed from your label. The 2.0 TDI PD (2004–2005) (BHW) runs Bosch EDC16U1, part-number prefix 038 906 019. The label on your module settles it in seconds.
Can you clone the ECU on a Passat B5 / B5.5?
Yes — every engine ECU on this generation is a routine bench clone. Mail your original and a donor with the same full part number and we copy the VIN, immobilizer data, coding and adaptations across for $350 flat, typically within 24 hours of arrival.
Will a cloned Passat ECU need dealer adaptation?
Usually not — it leaves the bench carrying your VIN, immobilizer data, coding and adaptations. If the car still asks for an on-car step, we run it remotely with ODIS over your J2534 interface for $250.