51 16 ... Calibrating compass in interior rearview mirror

NOTE: It may be necessary to alter the magnetic deflection zone if the vehicle is more than two ranges away from the set deflection zone. For numbers of magnetic deflection zone, refer to Owner's Handbook.

If may be necessary to calibrate the compass if:

Vehicle battery has been disconnected for an extended period of time.
"C" appears in compass display.
There is no compass display.

Setting Magnetic Deflection Zone:

Switch ignition on.
Using a suitable tool (1), press pushbutton in area (A) of mirror (2) until a number appears in compass display (B)
Press pushbutton repeatedly until number of desired zone appears
Wait until direction display appears
Magnetic deflection zone is now set

Fig 1: Locating Pushbutton And Compass Display

Courtesy of BMW OF NORTH AMERICA, INC.

Calibrating Compass:

Switch ignition on.
Using a suitable tool (1), press pushbutton in area (A) of mirror (2) until "C" appears in compass display (B).
Drive vehicle 2 to 3 times in a circle at approx. 10 mph.
Calibration process is completed when direction display appears.

Fig 2: Identifying Pushbutton And Compass Display

Courtesy of BMW OF NORTH AMERICA, INC.