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.
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HOMESERVICE MANUALSBMW2021Z4 SDRIVE M40IREPAIR AND DIAGNOSISGENERAL INFORMATIONOEM GENERAL INFORMATIONGENERAL ORPHAN DATA (2 OF 2)(INSTALLING ALL IGNITION COILS)
2021 BMW Z4 sDrive M40i
(Installing all ignition coils)
2021 BMW Z4 sDrive M40iSECTION (Installing all ignition coils)
NOTE:
The description is provided only at one component. The procedure is the same for all other components.
- Install ignition coil (3).
- Tighten down screw (2).(TIGHTENING TORQUES SPECIFICATION)
Ignition coil Screw Tightening torque 8 Nm - Connect connectors (1) and lock.
The connector (1) must engage audibly.
- Attach connector (1) of the primary oxygen sensor and the monitoring oxygen sensor to the cable duct (2).
RENDER: 1.0x
NO RELATED
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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.