12 42 500 Removing and installing/replacing the positive battery cable (after vehicle diagnosis) (between alternator/starter motor and positive battery terminal remote positive terminal): Notes
WARNING: This page is about a different car, the 2018 BMW 340i, 2017 BMW 340i, and 2016 BMW 340i. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Working on 12 V electrical system.
Risk of short circuits! Risk of fire!
Risk of short circuits! Risk of fire!
- Make sure that there is no charger connected to the jump start terminal in the engine compartment.
- Detach battery ground lead from battery.
- For auxiliary batteries: Detach battery minus cables from all auxiliary batteries.
Preliminary work
- Refer to REMOVING RIGHT LUGGAGE COMPARTMENT TRIM PANEL
- Disconnecting the battery earth lead
- Remove the cover in the left engine compartment
- Remove the right cover in the engine compartment
- Refer to REMOVING TRAILING LINK AT SPRING STRUT DOME
- Remove the sound insulation on the bulkhead upper part at the center
- Refer to REMOVING THE ACOUSTIC COVER
- Refer to REMOVING ACOUSTIC COVER AT REAR
- Refer to UNINSTALL COVER FOR THE DME CONTROL UNIT
- Refer to DISCONNECTING CONNECTOR FROM DME CONTROL UNIT AND FROM POWER DISTRIBUTION MODULE (PDM)
- Refer to REMOVING THE DME CONTROL UNIT
- Refer to REMOVE THE INTEGRATED POWER SUPPLY MODULE (PDM)
- Refer to REMOVING THE HOLDER FOR THE DIGITAL MOTOR ELECTRONICS-CONTROL UNIT
- Remove the FRONT UNDERBODY PROTECTION
- Remove REAR UNDERBODY PROTECTION
Follow-up work
- Install front and rear underbody protection
- Refer to INSTALLING THE HOLDER FOR THE DIGITAL MOTOR ELECTRONICS-CONTROL UNIT
- Refer to INSTALL THE INTEGRATED POWER SUPPLY MODULE (PDM)
- Refer to INSTALLING THE DME CONTROL UNIT
- Refer to CONNECT THE CONNECTOR TO THE DME CONTROL UNIT AND THE POWER DISTRIBUTION BOX (PDM)
- Refer to INSTALL COVER FOR THE DME CONTROL UNIT
- Refer to INSTALLING ACOUSTIC COVER AT REAR
- Install the sound insulation on the bulkhead upper part at the center
- Install tension strut on spring strut dome. Jointing torque: 56 Nm, angle of rotation: 90° NOTE: Replace screws.
- Install the cover in the engine compartment on the left
- Install the cover in the engine compartment on the right
- Refer to INSTALL ACOUSTIC COVER
- Connecting the battery earth lead
- Install right luggage compartment trim panel