Removing the starter motor generator

NOTE: RISK OF DAMAGE
Coolant leaking from the starter motor generator.
Damage and loss of function of the starter motor generator.

Cover the starter motor generator with suitable, watertight auxiliary materials.
Close off line connections with seal plugs.
If necessary: Rinse off the coolant leaking from starter motor generator with at least 1 I of water.

NOTE: RISK OF DAMAGE
Electrostatic discharge.
Damage to or destruction of electrical components.

Leave the electrical components in their original packaging until they are being installed. Only use the original packaging for returning the product. Always package removed components straight away.
Read and comply with user information on using the associated special tool 12 7 060.
Only tap the housings of electrical components. Do not tap pins or multi-pin connectors directly.
Wear electrically conductive clothing and antistatic shoes (with ESD symbol).
For additional information see: NOTES ON ESD (ELECTROSTATIC DISCHARGE) PROTECTION .

NOTE: TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.

Preliminary work

Refer to BRINGING FRONT COMPARTMENT LID IN THE SERVICE POSITION .
Refer to DEACTIVATING THE 48 V ELECTRICAL SYSTEM .
Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING THE SEAL FOR THE HOOD REAR .
Refer to REMOVING ACOUSTIC COVER AT REAR .
Refer to REMOVING THE COVER ON LEFT AND RIGHT IN THE ENGINE COMPARTMENT AT THE TOP .
Refer to REMOVING BOTH FRONT-END STRUTS .
Refer to REMOVING FRONT CROSS CONNECTION .
Refer to REMOVING THE REAR TOP CROSS CONNECTION .
Refer to REMOVING THE FAN COWL .
Refer to REMOVING THE INTAKE FILTER HOUSING (TENSION STRUT ON SHOCK TOWER REMOVED) .
Refer to REMOVING TOP CLEAN AIR PIPE .
Refer to REMOVING BOTTOM CLEAN AIR PIPE .
Refer to REMOVING CHARGE AIR LINE .
Refer to REMOVING THE DRIVE BELT FOR THE STARTER MOTOR GENERATOR .
Refer to REMOVING THE DME CONTROL UNIT .
Refer to REMOVING THE INTEGRATED POWER SUPPLY MODULE (PDM) .
Refer to REMOVING THE CONTROL UNIT HOLDER .
Refer to REMOVING THE FRONT UNDERBODY PROTECTION OR FRONT THRUST FIELD .
Refer to REMOVING THE UNDERBODY PROTECTION OF THE STEERING GEAR AND THRUST FIELD RESPECTIVELY .
Refer to DRAINING THE COOLANT FROM THE LOW-TEMPERATURE COOLING SYSTEM .
Refer to CONNECTING THE COOLANT LINES FOR THE LOW-TEMPERATURE COOLANT CIRCUIT .
Refer to REMOVING TANK VENT VALVE .
Refer to REMOVING THE INTAKE PLENUM .

Starter generator with belt tensioner

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: RISK OF DAMAGE
Damage to wires when disconnecting connectors and plug connections.
Sheared wires can cause a short circuit.

Do not pull on wires when disconnecting connectors and plug connections.

NOTE: RISK OF DAMAGE
Electrostatic discharge.
Damage to or destruction of electrical components.

Leave the electrical components in their original packaging until they are being installed. Only use the original packaging for returning the product. Always package removed components straight away.
Read and comply with user information on using the associated special tool 12 7 060.
Only tap the housings of electrical components. Do not tap pins or multi-pin connectors directly.
Wear electrically conductive clothing and antistatic shoes (with ESD symbol).
For additional information see: NOTES ON ESD (ELECTROSTATIC DISCHARGE) PROTECTION .

NOTE: TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
Avoiding damage to the starter motor generator due to escaping coolant

NOTE: RISK OF DAMAGE
Coolant leaking from the starter motor generator.
Damage and loss of function of the starter motor generator.

Cover the starter motor generator with suitable, watertight auxiliary materials.
Close off line connections with seal plugs.
If necessary: Rinse off the coolant leaking from starter motor generator with at least 1 I of water.

Thread in the special tool 0496 268 (11 0 390) in the belt tensioner and install it.

Courtesy of BMW OF NORTH AMERICA, INC.
Release the preload with standard tools (1) at the belt tensioner in the arrow direction.
Feed the special tool 0 496 268 (11 0 390) out of the belt tensioner and remove it.

Courtesy of BMW OF NORTH AMERICA, INC.
Feed the special tool 0 496 268 (11 0 390) out of the belt tensioner and remove it.

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Unlock plug connection (1) and disconnect.
Loosen clamp (2).
Release nut (3).
Feed out the grounding cable (4) and set it aside.
Unlock and loosen coolant the (5).
Catch and dispose of escaping coolant.

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: TECHNICAL INFORMATION
Conduct the following operation with the assistance of a second person.
Loosen screws (1).
Feed out the starter motor generator (2) and set it aside carefully.

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NOTE: TECHNICAL INFORMATION
Conduct the following operation with the assistance of a second person.
Unlock the coolant line (1) at the starter motor generator (2) and release it.
Catch and dispose of escaping coolant.

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Feed out the starter motor generator (1) and remove it.

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Feed out the connectors (1) at the top at the component carrier (3) and remove them.
Feed out the connectors (2) at the bottom at the component carrier (3) and remove them.

Courtesy of BMW OF NORTH AMERICA, INC.