Removing the cylinder head cover
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2025 BMW X4, 2024 BMW X4, 2023 BMW X4, 2022 BMW X4, and 2021 BMW X4. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Hot surfaces.
Risk of burning!
Risk of burning!
- Perform all work only on components that have cooled down.
WARNING:
Working on fuel system.
Risk of fire! Danger of explosion!
Risk of fire! Danger of explosion!
- When working on the fuel system, make sure the workstation has sufficient ventilation, e.g., by means of extraction.
- Tightly seal off open lines and connections; collect any leakage fuel directly at the point of exit.
- No fire, sparks, open flames or smoking.
CAUTION:
On releasing high pressure line, fuel may emerge at high speed.
Injury hazard!
Injury hazard!
- Wear suitable personal protective equipment.
- Before performing any installation work, allow cooling system to cool down to less than 40°C.
- Note warnings on cylinder head cover.
NOTE:
TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
Preliminary work
- Refer to DEACTIVATING ELECTRICAL SYSTEM .
- Refer to MOVING THE HOOD TO THE SERVICE POSITION .
- Refer to REMOVING THE ACOUSTIC COVER .
- Refer to REMOVING THE SEAL FOR THE HOOD REAR .
- Refer to REMOVING THE COVER OF THE ENGINE COMPARTMENT AT THE REAR LEFT .
- Refer to REMOVING THE COVER OF THE REAR RIGHT ENGINE COMPARTMENT .
- Refer to REMOVING LEFT AND RIGHT WIPER ARM .
- Refer to REMOVING THE COWL COVER .
- Refer to REMOVING THE TENSION STRUT AT THE SHOCK TOWER ON THE LEFT AND RIGHT .
- Refer to REMOVING THE FIREWALL UPPER PART .
- Refer to REMOVING ACOUSTIC COVER AT REAR .
- Refer to REMOVING RIGHT SEALING FRAME .
- Refer to REMOVING THE SECOND FIREWALL AT THE BOTTOM .
- Refer to REMOVING INTAKE SILENCER HOUSING .
- Refer to REMOVING RESONATOR .
- Refer to REMOVING CLEAN AIR PIPE .
- Refer to REMOVING CHARGE AIR LINE .
- Refer to REMOVING IGNITION COILS .
- Refer to REMOVING THE CYLINDER HEAD COVER ACOUSTIC COVER .
- Refer to REMOVING THE HIGH PRESSURE LINE BETWEEN THE HIGH PRESSURE PUMP AND THE RAIL .
- Refer to REMOVING FUEL DELIVERY LINE .
- Refer to REMOVING HIGH PRESSURE PUMP .
- Refer to REMOVING HIGH-PRESSURE RAIL .
- Refer to REMOVING THE ACOUSTIC COVER FOR THE ENGINE AT THE FRONT .
- Refer to REMOVING BOTH ACTUATORS .
Bolts of the cylinder head cover
NOTE:
TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
- Have a rag ready and make sure that no motor oil drips onto the belt drive.
- Loosen screw (1).
- Detach the oil feed line (2).
- Unlock and detach the engine wiring harness (1) in the highlighted areas.
- Unhook the two oxygen sensor cables (1) in the marked areas.
- Detach the positive battery cable (2) in the highlighted area.
- Unlock both plug connections (1) and disconnect.
- Unlock and pull off the engine ventilation line (2).
- Detach the engine wiring harness (3) in the highlighted area.
- Loosen both oxygen sensor connectors (1) from the carrier plate.
- Release screw (2) and keep the carrier plate aside.
- Detach the cables in the marked areas.
- Detach the engine wiring harness (3) in the highlighted area.
- Release screw (4) and keep the fuel supply line aside.
- Release the screws in the order from (15) to (1).
- Remove cylinder head cover.