51 16... Removing and installing or replacing retaining ring on left or right door mirror

Necessary preliminary tasks 

• Remove COVER CAP FROM DOOR MIRROR 
• Remove TRIM FROM DOOR MIRROR 
• Remove DRIVE for electrically adjustable door mirror

Release screws (1) on retaining ring (2).

Fig 1: Identifying Door Mirror Screws And Retaining Ring

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Unclip catch (1) and remove retaining ring (2).

Fig 2: Identifying Catch And Retaining Ring

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Installation: 

Catch (1) and guide (2) must not be damaged.

Locators (3) for multitooth catches must not be damaged.

Fig 3: Identifying Catch And Guide

Courtesy of BMW OF NORTH AMERICA, INC.