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61 21 010 Removing and installing battery

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WARNING:

Follow SAFETY REGULATIONS  for handling vehicle battery.

Follow the notes for DISCONNECTING AND CONNECTING THE VEHICLE BATTERY !

Follow instructions on INTELLIGENT BATTERY SENSOR  (IBS).

To ensure the correct safety and convenience functions, install only the original vehicle battery (battery size and type) stored in the vehicle order. Observe note on BATTERY REPLACEMENT .

Preliminary work needed: 

Removal: 

Loosen nut (1).

Remove battery ground lead (2) from the vehicle battery.

Unlock and disconnect connector (3).

Secure battery ground lead (2) at the side.

Fig 1: Locating Battery Ground Lead From Vehicle Battery
G11649783Courtesy of BMW OF NORTH AMERICA, INC.

Release expanding rivet.

Remove the mounting for the gasket (1).

Fig 2: Locating Gasket Mounting
G11645441Courtesy of BMW OF NORTH AMERICA, INC.

Release screw and remove tension strut (1).

Fig 3: Locating Tension Strut
G11645442Courtesy of BMW OF NORTH AMERICA, INC.

Loosen nut (1).

Remove positive battery cable from positive battery terminal.

Pull the vent hose (2) off.

Release screw (3) and remove holder.

Remove vehicle battery (4).

Fig 4: Pulling Vent Hose
G11649810Courtesy of BMW OF NORTH AMERICA, INC.

Replacement: 

Coat positive battery cable with special grease.

Installation: 

Install vehicle battery (4).

Join holder with screw (3) and tighten.

Tightening torque 61 21 4AZ .

Fit and clip the vent hose (2) in.

Connect the positive battery cable.

Tighten nut (1).

Tightening torque 61 21 1AZ .

Fig 5: Pulling Vent Hose
G11649810Courtesy of BMW OF NORTH AMERICA, INC.
NOTE:
  • Make sure the vehicle battery is correctly seated in associated mounting
  • Make sure the vent hose (2) is properly routed.
IMPORTANT: Danger due to released gases!

Installation note: 

The battery has two vent holes:

Fig 6: Locating Vent Hose
G09928714Courtesy of BMW OF NORTH AMERICA, INC.

Always install the vent hose (3) with a downhill gradient to the outside!

No siphon formation!

Join tension strut (1) and tighten with screws.

Tightening torque 61 21 5AZ .

Fig 7: Locating Tension Strut
G11645442Courtesy of BMW OF NORTH AMERICA, INC.

Join mounting for gasket (1) and secure with expanding rivet.

Fig 8: Locating Gasket Mounting
G11645441Courtesy of BMW OF NORTH AMERICA, INC.

Join battery ground lead (2) on the vehicle battery.

Tighten nut (1).

Tightening torque 61 21 1AZ .

Connect connector (3).

Fig 9: Locating Battery Ground Lead From Vehicle Battery
G11649783Courtesy of BMW OF NORTH AMERICA, INC.