Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2004 BMW 320i (E46) (CANADA) L6-2.2L M54FACTORY OEM SERVICE PROCEDURE
Control Module Identification
Control Module Identification
It is important to know how to properly identify DME control modules prior to programming. The control modules are identified by:
- BMW Part number
- BMW Hardware number
- Bosch Hardware number
These numbers are displayed in the following locations:
- Control module ID label.
- Control module ID display using the Diagnostic program.
Part Number Basic Control Module
This number refers to the part number of the control unit without any data status.
Part Number Programmed Control Module
This number refers to the part number of a factory programmed module that includes the data status.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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