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Home >> BMW >> 2025 >> 230i >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Electric Converters and Controllers >> General Electrical System -- Repair (G42) >> 61 13 Plug Connections, Terminals >> Unlocking and disconnecting various plug connections in electrical and hybrid vehicles

Unlocking and disconnecting various plug connections in electrical and hybrid vehicles

Attention! 

Observe the following instructions for handling high-voltage plug connections:

Disconnect the Hirschmann high-voltage connector: 

Press the lock (1) on the left and right on the connector in the direction of the arrow.

Detach connector (2) in arrow direction.

IMPORTANT: Connector (2) may be difficult to detach.
In the event of damage to high-voltage connector (2), the complete high-voltage cable must be replaced!
G11103487Courtesy of BMW OF NORTH AMERICA, INC.

Connect the Hirschmann high-voltage connectors: 

Slide the connector (1) on in the direction of the arrow.

NOTE: Connector (2) must lock audibly.
G11103488Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect the Kostal high-voltage connector: 

Unlock and disconnect high-voltage interlock loop (1).

G11103489Courtesy of BMW OF NORTH AMERICA, INC.

Push the lock (1) fully to the front.

Lift the connector (2) and remove it entirely.

IMPORTANT: Plug connection (3) may be difficult to detach.
The connector (2) must be completely detached from the opposite housing in one step. Damage may be caused to contact protection if connector is only partly detached and then closed again!
G11103490Courtesy of BMW OF NORTH AMERICA, INC.

Check the Kostal high-voltage connector and connection for damage: 

Check the contact protection for damage and correct positioning (1).

WARNING: Do not touch unprotected connector (2)!
If the contact protection (1) has been pushed to the bottom (2), the high-voltage connector must be refitted.
If contact protection (1) remains in bottom position (2) after reinstallation, the contact protection is faulty and the component must be replaced!
G11103491Courtesy of BMW OF NORTH AMERICA, INC.

Check the high-voltage connector (1) for damage.

WARNING: In the event of damage to the high-voltage connector (1), the complete high-voltage cable must be replaced!
G09928434Courtesy of BMW OF NORTH AMERICA, INC.

Connect the Kostal high-voltage connector: 

Connect the connector (2) in one single movement to the counter-housing.

Push the lock (1) fully to the rear.

IMPORTANT: Plug connection (3) must be correctly locked by lock (2), otherwise there is a risk of damage.
G11103493Courtesy of BMW OF NORTH AMERICA, INC.

Connect the connector for the high-voltage interlock.

G11103494Courtesy of BMW OF NORTH AMERICA, INC.

Three-phase high-voltage connector: 

Connect and disconnect the connector straight.

G11103495Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: The system is designed to only offer limited protection against damage caused by connectors that are inserted at an angle.
Increased tilted connections will increase the connecting force and the risk of danger.
G11103496Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect the high-voltage connector from the high-voltage connection of the KLE: 

Slide locking mechanism (1) in arrow direction up to stop.

G11103497Courtesy of BMW OF NORTH AMERICA, INC.

Press lock (1).

G11103498Courtesy of BMW OF NORTH AMERICA, INC.

Open the lock (1) completely and disconnect the connector (2).

G11103499Courtesy of BMW OF NORTH AMERICA, INC.

Connect the high-voltage connector to the high-voltage connection of the KLE: 

Insert the connector (1) up to the stop and close the lock (2).

IMPORTANT: Lock (2) must snap audibly into place.
The retaining lug of the lock (2) must be positioned completely under the lock (2).
G11103500Courtesy of BMW OF NORTH AMERICA, INC.

Slide the lock (1) on to the stop in the direction of the arrow.

G11103501Courtesy of BMW OF NORTH AMERICA, INC.

High-voltage connector on the high-voltage connection of the high-voltage battery unit: 

Press down unlocking mechanism (1) in arrow direction and detach connector in arrow direction (2).

Attention! 

Contact protection is no longer provided in the event of a damaged connector housing.

In this case, contact technical support.

G11103502Courtesy of BMW OF NORTH AMERICA, INC.

High-voltage connector on the cell module I01: 

Press unlocking mechanism (1) together and detach connector upwards (2).

Attention! 

Contact protection is no longer provided in the event of a damaged connector housing.

In this case, contact technical support.

G11103503Courtesy of BMW OF NORTH AMERICA, INC.

High-voltage connector on the cell module (cell module connecting line): 

Press unlocking mechanism (1) in arrow direction and detach connector in arrow direction (2).

Attention! 

Contact protection is no longer provided in the event of a damaged connector housing.

In this case, contact technical support.

G11103504Courtesy of BMW OF NORTH AMERICA, INC.