Remove/install turn/push control for front central operating unit - AR54.21-P-0501SX

MODEL 216.3, 221.0 /1 

Shown on model 221 with code (388) Telephone "Handy", UPCI system 

Fig 1: Identifying Turn/Push Control, Hand Rest Housing, Covering, Gearing Neck And Bolt

Courtesy of MERCEDES-BENZ USA

	Remove/install
1.1	Release hand rest (2) by passing suitable screwdriver through opening (arrow A) and remove hand rest housing (3)	Model 216, 221 without code (386) Preinstallation for telephone "Handy", UPCI system or without code (388) Telephone "Handy", UPCI system or without code (498) Japan version or without code (389) Mobile phone preinstallation with universal interface, USA/Canada Model 221 without code (359) TELE AID emergency call system
1.2	Open hand rest (2) and release center console button group (S148) by passing suitable screwdriver through opening (arrow A), disconnect electrical connector and remove center console button group (S148)	Model 216, 221 with code (386) Preinstallation for telephone "Handy", UPCI system or with code (388) Telephone "Handy", UPCI system or with code (498) Japan version or with code (389) Mobile phone preinstallation with universal interface, USA/Canada Model 221 with code (359) TELE AID emergency call system except code (807) Model year 2007)
2	Unscrew bolt (4) and remove hand rest housing (3)
3	Position firmer chisel at center of covering (5), knock in covering (5) and pry off	Installation  : Replace the covering (5).	*WH58.30-Z-1043-04A
4	Unscrew bolt (6) and remove turn/push control (1)	Installation  : The turn/push control (1) must be inserted correctly into the two mounts (arrows B) on the gearing neck (7) of the front central operating unit, otherwise it may not be seated securely.
5	Install in the reverse order