BMW X3 Service & Repair Manual: Removing/replacing knock sensors (N55)

Necessary preliminary tasks:

  • Read out the fault memory of the DME control unit.
  • Switch off ignition.
  • Remove INTAKE PLENUM .
  • Vehicles with the Bosch high pressure pump only :

Remove HIGH PRESSURE PUMP .

Unlock connector (1) and remove.

Feed out connector (1) behind feed line, remove FEED LINE if necessary.

Electrical

Release screws on both knock sensors (1) and remove knock sensors (1).

Electrical

Installation note:

Clean contact surface of knock sensors on engine block.

Electrical

NOTE: Reassemble the vehicle.

Check stored error/fault messages.

Clear diagnostic fault entries from fault memory.

    Removing/replacing knock sensors (N52T)
    IMPORTANT: Aluminum-magnesium materials. No steel screws/bolts may be used due to the threat of electrochemical corrosion. A magnesium cr ...

    Replacing (dde) control unit (N47 D20 O1)
    IMPORTANT: Read and comply with NOTES on protection against electrostatic damage (ESD protection). Necessary preliminary work: Read out t ...

    Other materials:

    BMW X3 Service & Repair Manual > Steering and wheel alignment: Basic body
    Basic body Minimum set: Mechanical tools AM Basic body AM NOTE: (Basic body) BOLT Bolt AM NOTE: (Pressure pin) discontinued, available as part of set of special tools only Bolt AM Replaced by: 83300492036 NOTE: (Measuring bolt) Discontinuation and replaced by 32 2 140. (0 492 036) ...

    BMW X3 Owners Manual

    BMW X3 Service & Repair Manual

    © 2017-2023 Copyright www.bmwx3tech.com - 0.0797