OEM BMW N20 DME Engine Control Unit ECU 0261508603
The 0261508603 is an OEM Bosch Engine Control Unit (DME/ECU) for BMW N20 4-cylinder turbocharged engines, managing engine performance, fuel injection, and heat management functions.
- Bosch DME 0261508603 (BMW part equivalents: 13627830177, 13628595945, 13627601351), used/new OEM ECU for N20 engines.
- Digital Motor Electronics controller handles Valvetronic, VANOS, turbo boost, and electronic throttle.
- Requires programming, VIN coding, and mileage sync for replacement; a common failure part in N20 timing chain issues.
Function
- Controls N20 engine operations: fuel injection, ignition timing, variable valve timing (Valvetronic/VANOS), turbocharger boost.
- Manages heat management functions similar to N55, including electric cooling fans/pumps for optimal temperature control.
- Monitors sensors, diagnostics (OBD-II), emissions, and integrates with the vehicle CAN bus for full powertrain management.
Supported Vehicle Models
- BMW 1 Series F20/F21: 116i, 118i, 120i (N20B20, 2011-2017)
- BMW 3 Series F30/F31/F34: 320i, 328i, 330i (N20B20/B30, 2011-2019)
- BMW 5 Series F10/F11: 520i, 528i (N20, 2011-2017)
- BMW X1 E84/F48: xDrive20i, sDrive20i (N20, 2012-2015)
- BMW X3 F25: xDrive28i (N20B20, 2011-2017)
Note: Replacement requires professional coding with ISTA/INPA; verify the exact software version for your VIN.
