12 Removing And Installing Engine Compartment Suppression Lines (Grounding Cables) (N62/TU)

Necessary preliminary tasks:

Read out fault memory of DME control unit; if necessary, work through test schedules
Switch off ignition
Disconnect battery negative lead
If necessary, remove acoustic cover
REMOVE INTAKE HOSE
Remove intake filter housing

Release screw connection (1) of intake filter mounting.

Pull ignition coil covers (2) out of rubber grommets.

Fig 1: Identifying Holder And Ignition Coil Covers

Courtesy of BMW OF NORTH AMERICA, INC.

Release front screw connection of fuel injector wiring harness, screw down grounding strap with crimp connection again in upward direction.

Release ignition coil ground screw connection and screw other end of grounding strap to ignition coil ground again.

Installation:

Tightening torque: 12 52 3AZ . See CONNECTIONS, TERMINALS, LOOSE PARTS for specs.

The picture shows the right cylinder bank, the procedure for the left cylinder bank is identical.

Add final details to vehicle, read out fault memory.

Fig 2: Identifying Ignition Coil Ground Wire

Courtesy of BMW OF NORTH AMERICA, INC.