Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSBMW2013128I 2D CONVERTIBLE, ENG CD N52, STANDARD TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 875 (GENERAL ELECTRICAL SYSTEM - REPAIR)35 ECUS MODULES61 35 107 REMOVING AND INSTALLING/REPLACING JUNCTION BOX ELECTRONICS

2013 BMW 128i 2D Convertible, Eng CD N52, Standard Trans

61 35 107 Removing And Installing/Replacing Junction Box Electronics

2013 BMW 128i 2D Convertible, Eng CD N52, Standard TransSECTION 61 35 107 Removing And Installing/Replacing Junction Box Electronics

WARNING: This page is about a different car, the 2010 BMW X5, 2009 BMW X5, 2008 BMW X5, and 2007 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection) . See 61 35... NOTES ON ESD PROTECTION (ELECTRO STATIC DISCHARGE) .

Necessary preliminary tasks:

Disconnect battery negative lead . See 61 20 900 DISCONNECTING AND CONNECTING BATTERY NEGATIVE LEAD .
Remove trim for instrument panel, bottom left . See 51 45 181 REMOVING AND INSTALLING/REPLACING BOTTOM RIGHT TRIM FOR INSTRUMENT PANEL .

Release screws (1).

Remove air duct (2).

Fig 1: Identifying Air Duct

G04792330

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Slacken wiring harness in cable holder (2).

Fig 2: Identifying Cable Holder

G04792331

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Fig 3: Identifying Screw

G04792434

Courtesy of BMW OF NORTH AMERICA, INC.

Lever holders (1) at bulkhead out of fuse box (2) in direction of arrow.

Lower fuse box (2).

Fig 4: Removing Holders

G04792333

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection (1).

Fig 5: Identifying Plug Connection

G04792334

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Pull junction box electronics (2) out of fuse box.

Installation:

Make sure junction box electronics (2) is correctly seated in fuse box plug connection.

Fig 6: Pulling Junction Box Electronics Out Of Fuse Box

G04792437

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

Carry out programming/coding . See VEHICLE PROGRAMMING AND CODING .

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

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

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