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
On-Board Monitor System Introduction
ON-BOARD MONITOR SYSTEM
The On-board Monitor System was introduced as optional equipment on the 1997 MY E38s and E39s. It was made standard on the E38 750iL for 1999 and standard for all E38s in 2000. It uses the latest advances in electronic technology to bring new levels of comfort and convenience to the driver and passengers for control of the audio/communication systems. In addition the Mark I Navigation system is incorporated into the total scope of On-board Monitor Control.
NOTE: The E39 six cylinder models with the On-board Monitor option are equipped with the high version IKE and On Board Computer functions.
The On-board Monitor is essentially a control and display unit. All data processing and calculations are carried out by the individual system control modules. The display data is sent to the On-board Monitor over the various interfaces.
The On-board Monitor is mounted in the center dash console. It replaces the Radio/tape Player, MID and DSP control panel (E38) if equipped.
It consists of control knobs and buttons for programming and operating the various systems.
There is a 5 1/4 inch, color LCD screen for display of all system functions. The tape player drive is also part of the On-Board Monitor unit. However, the radio receiver/amplifier module is now mounted in the trunk. The audio system is controlled from the on-board monitor. Additionally, the systems controlled and programmed through the On-board Monitor include:
- On Board Computer
- Television (Early production only)
- Navigation system
- Digital Sound Processor (DSP)
- Telephone
- Auxiliary Ventilation
- Code Function
- Emergency (provides vehicle location and Set (on-board monitor setup) automatically dials telephone for help).
- Monitor Off (Switches the monitor off).
Factory Service Tools
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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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