BMW 7 Series: Removing And Installing/Replacing Electronics Box

IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection).

NOTE: Follow instructions for removing and installing CONTROL UNITS !

Necessary preliminary work

• Read fault memory.
• Disconnect BATTERY EARTH LEAD.
• Remove DME CONTROL UNIT.

Release screws (1).

Tightening torque 12 90 1AZ.

Unclip coolant lines at clamp (2) from electronics box.

Feed electronics box (3) out upward and remove.

Fig. 21: Identifying Electronics Box, Clamp And Screws

Installation note: When installing the electronics box, insert guide (1) on engine support.

Fig. 22: Identifying Engine Support Guide

REMOVING AND INSTALLING/REPLACING ELECTRONICS BOX ADD-ON

IMPORTANT: Comply with NOTES ON PROTECTION AGAINST ELECTROSTATIC DAMAGE (ESD protection)!

NOTE: Follow instructions for removing and installing control units.

Necessary preliminary work

• Read fault memory.
• Disconnect BATTERY EARTH LEAD.

Remove right cowl panel cover.

Picture shows the left side, the procedure for the right side is identical.

Lever expander rivets (1) out of cover (2).

Installation note: If necessary, replace damaged expanding rivets.

Make sure holders (3) are correctly seated.

Fig. 23: Identifying Rivets, Cover And Holders

Release screws (1).

Tightening torque 12 90 4AZ.

Release retainer (2).

Remove cover (3) from supplementary electronics box.

Fig. 24: Identifying Supplementary Electronics Box Cover, Retainer And Screws

Unclip grommet hold-down device (1).

Detach rubber grommets (2) from electronics box add-on.

Installation note: Make sure grommets are correctly seated (watertightness).

Release carrier plate (3) from lower section of supplementary electronics box (5) and set aside.

Release screw (4).

Tightening torque 12 90 2AZ.

Remove the lower section of the supplementary electronics box (5).

Fig. 25: Identifying Grommet Hold-Down Device, Electronics Box Rubber Grommets, Carrier Plate And Supplementary Electronics Box

REMOVING/REPLACING LEFT KNOCK SENSORS (N63)

Necessary preliminary work

• Read out the fault memory of the DME control unit.
• Switch off ignition.
• Disconnect BATTERY EARTH LEAD.
• Remove LEFT INTAKE PLENUM.

Unlock and disconnect connector (1) on both knock sensors.

Release screws on both knock sensors (2).

Tightening torque 13 62 5AZ.

Remove knock sensors (3).

Fig. 26: Identifying Knock Sensors, Connector And Screws

Installation note: Clean contact surface of knock sensors on engine block.

Fig. 27: Locating Contact Surface Of Knock Sensors On Engine Block

NOTE: Check stored fault message.

Delete fault memory.

REMOVING/REPLACING RIGHT KNOCK SENSORS (N63)

Necessary preliminary work

• Read out the fault memory of the DME control unit.
• Switch off ignition.
• Disconnect BATTERY EARTH LEAD.
• Remove RIGHT INTAKE PLENUM.

Picture shows left side. Procedure on right side identical.

Unlock and disconnect plugs (1) on both knock sensors.

Release screws on both knock sensors (2).

Tightening torque 13 62 5AZ.

Remove knock sensors (3).

Fig. 28: Identifying Knock Sensors, Connector And Screws

Installation note: Clean support face of knock sensors on engine block.

Fig. 29: Locating Contact Surface Of Knock Sensors On Engine Block

NOTE: Check stored fault message.

Delete fault memory.

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