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34 52 525 Replacing one front pulse sensor

WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DAMAGE (ESD protection).

Necessary preliminary tasks: 

Open housing cover.

Disconnect plug connection (1).

Installation note: 

Ensure proper locking of plug connection and proper seating of rubber grommets.

Fig 1: Identifying Plug Connection
G08505208Courtesy of BMW OF NORTH AMERICA, INC.

Disengage line (1) along marked lines from holders.

Installation note: 

Ensure proper locking of the holders and proper seating of the line in the brackets.

Fig 2: Identifying Front Pulse Sensor Line
G08505209Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1) and withdraw pulse sensor (2) from bore hole.

Installation note: 

Tightening torque 31 51 3AZ .

Clean bore for pulse sensor and lubricate with Staburags NBU 12/K lubricating grease.

IMPORTANT: Prior to installation, check sensor head for damage and replace if necessary.
Fig 3: Identifying Pulse Sensor And Screw
G08505210Courtesy of BMW OF NORTH AMERICA, INC.