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.
2018 BMW 740iFACTORY OEM SERVICE PROCEDURE
Engine - Turbocharger/Vacuum Pump/EGR/02 Sensors - Repair (G12)
- 11 65 Charger With Control
- 11 65 185 Removing and installing/replacing lower heat shield (750i xDrive 2016-2022)
- 11 65 190 Removing and installing/replacing front heat shield (750i xDrive 2016-2022)
- 11 65 811 Replace blow-off valve for the left exhaust turbocharger (750i xDrive 2016-2022)
- 11 65 812 Replace blow-off valve for the right exhaust turbocharger (750i xDrive 2016-2022)
- 11 65 025 Removing and installing/replacing the right exhaust turbocharger (M760i xDrive 2017-2022)
- 11 65 030 Removing and installing/replacing left exhaust turbocharger (M760i xDrive 2017-2022)
- 11 65 803 Replacing the electrical controller drive for wastegate valve (after vehicle diagnosis) (cylinders 1-4, if necessary cylinders 1-6) (M760i xDrive 2017-2022)
- 11 65 804 Replacing the electrical controller drive for wastegate valve (after vehicle diagnosis) (cylinders 5-8, if necessary cylinders 7-12) (M760i xDrive 2017-2022)
- 11 65 811 Replace blow-off valve for the left exhaust turbocharger (M760i xDrive 2017-2022)
- 11 65 812 Replace blow-off valve for the right exhaust turbocharger (M760i xDrive 2017-2022)
- 11 66 Vacuum Pump
- 11 74 Exhaust-Gas RECIRCULATION Valve
- 11 74 556 Replacing electric changeover valve for engine mount (after vehicle diagnosis) (740e xDrive PHEV 2017-2019)
- 11 74 559 Replacing the electric valve for water pump vacuum control (after vehicle diagnosis) (740e xDrive PHEV 2017-2019)
- 11 74 556 Replacing electric changeover valve for engine mount (after vehicle diagnosis) (745e xDrive PHEV 2020-2022)
- 11 78 Co Adjustment, Oxygen Sensor
- 11 78 510 Replacing oxygen sensor (after vehicle diagnosis) (740i 2016-2022, 740i xDrive 2017-2022)
- 11 78 610 Replacing the oxygen sensor monitor (after vehicle diagnosis) (740i 2016-2022, 740i xDrive 2017-2022)
- 11 78 510 Replacing oxygen sensor (after vehicle diagnosis) (740e xDrive PHEV 2017-2019)
- 11 78 610 Replacing the oxygen sensor monitor (after vehicle diagnosis) (740e xDrive PHEV 2017-2019)
- 11 78 510 Replacing oxygen sensor (after vehicle diagnosis) (745e xDrive PHEV 2020-2022)
- 11 78 610 Replacing the oxygen sensor monitor (after vehicle diagnosis) (745e xDrive PHEV 2020-2022)
- 11 78 530 Replacing the left Lambda oxygen sensor (after vehicle diagnosis) (750i 2016-2019)
- 11 78 533 Replacing right Lambda oxygen sensor (after vehicle diagnosis) (750i 2016-2019)
- 11 78 540 Replacing the left monitoring oxygen sensor (after vehicle diagnosis) (750i 2016-2019)
- 11 78 543 Replacing the monitoring oxygen sensor (after vehicle diagnosis) (750i 2016-2019)
- 11 78 530 Replacing left front oxygen sensor (750i xDrive 2016-2022)
- 11 78 533 Replacing right front oxygen sensor (750i xDrive 2016-2022)
- 11 78 535 Replace both front oxygen sensors (750i xDrive 2016-2022)
- 11 78 540 Replace left monitoring oxygen sensor (750i xDrive 2016-2022)
- 11 78 543 Replace right monitoring oxygen sensor (750i xDrive 2016-2022)
- 11 78 545 Replacing both monitoring oxygen sensors (750i xDrive 2016-2022)
- 11 78 530 Replacing left front oxygen sensor (M760i xDrive 2017-2022)
- 11 78 533 Replacing right front oxygen sensor (M760i xDrive 2017-2022)
- 11 78 540 Replace left monitoring oxygen sensor (M760i xDrive 2017-2022)
- 11 78 543 Replace right monitoring oxygen sensor (M760i xDrive 2017-2022)
- 11 79 Exhaust-Gas Thermal Protection
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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