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Home >> BMW >> 2025 >> 230i >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Electric Converters and Controllers >> General Electrical System -- Repair (G42) >> 61 21 Vehicle Battery >> 61 21 017 Replacing vehicle battery - registering with battery replacement >> Installing the system battery

Installing the system battery

G14644987Courtesy of BMW OF NORTH AMERICA, INC.

Check the vent holes of the battery 

WARNING: Exhaust. 
Injury hazard! Danger of explosion! 
  • Assign the vent holes correctly.
  • Route the vent hose correctly.
NOTE: TECHNICAL INFORMATION 
The battery has two ventilation openings positioned opposite to each other:
One ventilation opening (1) must be closed correctly with a dummy plug.
The vent hose (3) must be correctly connected and routed at the other ventilation opening (2).
G15916744Courtesy of BMW OF NORTH AMERICA, INC.

Check 

Result 

» No dummy plug.

Measure

Check 

Result 

» The vent hose (3) is not correctly connected.

Measure

Check 

Result 

» The vent hose (3) is not routed correctly as shown on the right side.

Measure

G14644986Courtesy of BMW OF NORTH AMERICA, INC.

Check 

G14644728Courtesy of BMW OF NORTH AMERICA, INC.

Result 

» Guides (1) or detents (3) are damaged.

Measure

G14644713Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work