Retrofit larger display - AN82.60-P-0023NKC

MODEL 117.3/9 with CODE 505 (Radio 20 NTG5, not navigation-enabled) except CODE 857 (8" display for Audio 20) 

MODEL 117.3/9 with CODE 520 (Audio 20 USB) except CODE 857 (8" display for Audio 20) 

MODEL 117.3/9 with CODE 522 (Audio 20 CD including preinstallation for Garmin® MAP PILOT) except CODE 857 (8" display for Audio 20) 

Fig 1: Locating Audio/COMAND Display

Courtesy of MERCEDES-BENZ USA

	Remove
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
1	Remove display
			AR82.60-P-7722NKB
		Removed display is no longer required.
	Install
2	Install 8" Audio/COMAND display (A40/8)
			AR82.60-P-7722NKB
	Update Vehicle Documentation (VeDoc)
3	Add special equipment to online vehicle data card	Code 857 (8" display for Audio 20).
4	Attach note "8" display retrofitted as per AN82.60-P-0023NKC " under field organization texts to design group 82
	Check
5	Perform function test	See operator's manual for Audio 20 radio.