BMW 7 Series: Sensor For Control Unit

REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT AIR-MASS FLOW SENSOR (N63)

Necessary preliminary tasks

• Read out fault memory of DME control unit
• Switch off ignition
• Remove ACOUSTIC COVER

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

Unlock plug (1) and remove.

Release screws (2).

Tightening torque 13 62 6AZ.

Pull air-mass flow sensor (3) out of upper section of intake filter housing.

Installation: Replace gasket on air-mass flow sensor.

Fig. 95: Identifying Air-Mass Flow Sensor With Plug And Mounting Screw

NOTE: Check stored fault message.

Now clear the fault memory.

REMOVING AND INSTALLING/REPLACING PRESSURE SENSOR ON LEFT INTERCOOLER (N63)

Necessary preliminary tasks

• Read out fault memory of DME control unit.
• Switch off ignition
• Remove left intake duct.

Unlock plug (1) and remove.

Release screws (2).

Tightening torque 13 62 7AZ.

Pull pressure sensor (3) out of left intercooler.

Installation: Replace sealing ring on pressure sensor.

Fig. 96: Identifying Pressure Sensor With Plug And Mounting Screws

Installation: Now clear the fault memory.

REMOVING AND INSTALLING/REPLACING PRESSURE SENSOR ON LEFT PLENUM CHAMBER (N63)

Necessary preliminary tasks

• Read out fault memory of DME control unit
• Turn off ignition
• Remove coolant EXPANSION TANK
• Remove FLUID RESERVOIR for hydraulic steering
• Remove WATER VALVE for heater/air conditioner and lay coolant hoses to one side
• Release suction line for hydraulic steering and place to one side, do not remove
• Secure ENGINE in installation position

Unlock plug (1) and remove.

Release screws (2) with a reversible ratchet, extension, universal joint and a magnetic Torx socket.

Tightening torque 13 62 2AZ.

Pull pressure sensor (3) out of left plenum chamber.

Installation: Coat sealing ring with anti-friction agent.

Fig. 97: Identifying Pressure Sensor With Plug And Mounting Screws

Installation: clear fault memory.

REMOVING AND INSTALLING/REPLACING PRESSURE SENSOR ON RIGHT INTAKE PLENUM (N63)

Necessary preliminary work

• Read out DME fault memory.
• Switch off ignition.
• Remove ELECTRONICS BOX.
• Draw off A/C SYSTEM.
• Secure ENGINE in installation position.

Release screw (1).

Tightening torque 64 53 3AZ.

Detach A/C line (2) and place to one side.

Replace sealing ring on A/C line.

Fig. 98: Identifying A/C Line With Mounting Screws

Unlock connector (1) and remove.

Release screws (2) with a reversible ratchet, extension, universal joint and a magnetic Torx socket.

Tightening torque 13 62 2AZ.

Pull pressure sensor (3) out of left intake plenum.

Installation note: Coat sealing ring with lubricant.

Fig. 99: Identifying Pressure Sensor With Connector And Mounting Screws

Installation note: Delete fault memory.

REMOVING AND INSTALLING/REPLACING PRESSURE SENSOR ON RIGHT INTERCOOLER (N63)

Necessary preliminary tasks

• Read out fault memory of DME control unit.
• Switch off ignition
• Remove right intake duct.

Unlock plug (1) and remove.

Release screws (2).

Tightening torque 13 62 7AZ.

Pull pressure sensor (3) out of right intercooler.

Installation: Replace sealing ring on pressure sensor.

Fig. 100: Identifying Intercooler Pressure Sensor With Plug And Mounting Screws

Installation: Now clear the fault memory.

REPLACING COOLANT TEMPERATURE SENSOR (N63)

WARNING: Risk of scalding! Only perform this repair work after engine has cooled down.

IMPORTANT: Protect alternator against coolant.

Cover alternator with suitable apparatus (risk of damage).

Necessary preliminary tasks

• Read out fault memory of DDE control unit, working through test schedules if necessary.
• Switch off ignition.
• Remove AUXILIARY WATER PUMP for exhaust turbocharger.

Unlock connector (1) and remove.

Unfasten coolant temperature sensor (2).

Installation note: Tightening torque 13 62 1AZ.

Fig. 101: Identifying Coolant Temperature Sensor With Connector

Delete fault memory.

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