52 13 ... Removing and installing/replacing guide for front left or right head restraint (TU)

Press backrest cover (1) and padding next to guide (2) downwards to expose detent lugs.

Fig 1: View of Guide In Head Restraint

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock detent lugs and lift out guide.

Fig 2: Identifying Detent Lugs On Guide

Courtesy of BMW OF NORTH AMERICA, INC.