Remove/Install Head Restraint On Front Seat - AR91.16-P-0040GQA

Model 166 as of model year 2016 

except code 399 (Multicontour front seats with massage function) 

Model 292 

except code 399 (Multicontour front seats with massage function) 

Shown on driver seat 

Fig 1: Head Restraint On Front Seat Components Location - Model 166 As Of Model Year 2016 Except Code 399

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Remove seat-back lining (1) from front seat		AR91.10-P-1910GQ
2	Unhook cover (2) from front seat at top (arrow A)
3	Push head restraint (3) upward
4	Incline backrest of front seat towards rear
5	Carefully pull cover (2) back and release lock (4) using suitable tool in direction of arrow (B)	The lock (4) is located on the left at the driver seat and on the right at the front passenger seat.
6	Remove head restraint (3)
7	Install in the reverse order