2013 BMW 128i 2D Convertible, Eng CD N52, Standard TransFACTORY OEM SERVICE PROCEDURE

61 14... Removing And Installing/Replacing Engine Compartment B+ Terminal

IMPORTANT: Read and comply with notes on handling wiring harnessesΒ Β  and cables.

Necessary preliminary tasks:Β 

NOTE: Work is shown on the E82 N52N by way of example. There may be differences in detail in the case of other vehicle models.

Unclip covers (1) and release nuts underneath. Tightening torque, see 61 12 4AZ in 61 12 AUXILIARY CABLE .

Remove battery positive cables.

Fig 1: Identifying Battery Positive Cable Covers
G04727441Courtesy of BMW OF NORTH AMERICA, INC.

Unclip cover (1).

Fig 2: Identifying Battery Positive Cable Covers
G04727562Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew nuts (1). Tightening torque, see 61 12 4AZ in 61 12 AUXILIARY CABLE .

Remove battery positive cables.

Release locks (2) and remove frame (3) towards rear from B+ terminal.

Unclip B+ terminal and remove towards front.

Installation:Β 

Make sure frame (3) engages correctly in B+ terminal.

Fig 3: Identifying Battery Positive Cables Nuts
G04727563Courtesy of BMW OF NORTH AMERICA, INC.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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