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Home >> BMW >> 2021 >> 430i xDrive >> Repair and Diagnosis >> Accessories & Equipment >> Horns >> General Electrical System -- Repair (G22, G23 & G26) >> 61 21 Battery With Holder >> 61 21 010 Removing and installing the vehicle battery (4' Series coupe and convertible models) >> Installing the system battery

Installing the system battery

tightening torque specification

Battery carrier to body
M8 screw Tightening torque  15 nm
G14644989Courtesy of BMW OF NORTH AMERICA, INC.
tightening torque specification

Battery rollover protection bracket to luggage compartment floor
Screw Tightening torque  8 nm
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).
G09928714Courtesy 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

tightening torque specification

Positive battery terminal to battery
Nut Tightening torque  5 nm
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