Description
Engine control unit (ECU) by VAG, catalog number 03L997009J. Confirmed catalog fitment: Volkswagen PASSAT B7 362 (2010–2016), Volkswagen PASSAT B7 A32, A33, A34 (2011–2020). For an accurate match, compare the number and identification with the removed part and confirm the vehicle specification by VIN. The fitment list is a reference and does not replace a vehicle-specific compatibility check.
The ECU is the central “brain” of the vehicle and directly affects engine power, fuel economy, emissions, idle stability, and starting performance. It communicates with transmission, safety, and comfort systems via the vehicle network.
If the ECU fails, symptoms may include engine warning lights, unstable operation, poor starting, loss of power, increased fuel consumption, limp mode activation, or diagnostic communication issues.
Our catalog includes engine control units for many vehicle brands and engine types. Available options include:
genuine factory ECU modules
reliable aftermarket replacements
tested used units without water damage
modules for petrol and diesel engines
units for different software versions and configurations
Used modules are inspected for electronic functionality, connector condition, and diagnostic response.
Selection is available:
by VIN number
by ECU part number
by software version
by engine type
by vehicle model and year
Replacing a faulty ECU restores proper engine management, eliminates errors, and ensures reliable performance.
Compatibility
Fits 2 vehicles
Nothing found
About the manufacturer · VAG
VAG is a commonly used abbreviation referring to the Volkswagen Group, one of the largest automotive manufacturers and component producers in the world. The group was founded in Germany and includes many well‑known autom...
About the manufacturer · VAG
VAG is a commonly used abbreviation referring to the Volkswagen Group, one of the largest automotive manufacturers and component producers in the world. The group was founded in Germany and includes many well‑known autom...