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.
2002 BMW 745LiFACTORY OEM SERVICE PROCEDURE
General Information
- Working on ignition system, refer to 12 00... Information on working on ignition system
- Removing and installing electronic control units, refer to 12 00... Instructions for removing and installing electronic control units
- Welding work (overload protection of control units), refer to 12 00... Instructions for welding work (overload protection of control units)
- Disconnecting and connecting battery, refer to 12 00... Instructions for disconnecting and connecting battery
- Disconnecting and connecting test equipment, refer to 12 00... Instructions for connecting and disconnecting test units
- Component inspection: Refer to 12 00... Instructions on component testing
- External jump-starting aid, refer to 12 00... Instructions on starting aid
- Compression testing, refer to 11 00 045 CHECKING ABSOLUTE COMPRESSION OF ALL CYLINDERS
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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