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

MODEL 242, 246 with CODE 505 (Radio 20 NTG5, not navigation-enabled) except CODE 857 (8" display for Audio 20) 

MODEL 242, 246 with CODE 520 (Audio 20 USB) except CODE 857 (8" display for Audio 20) 

MODEL 242, 246 with CODE 522 (Audio 20 CD including preinstallation for Garmin® MAP PILOT) except CODE 857 (8" display for Audio 20) 

Fig 1: Identifying 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-0023NKB " under field organization texts to design group 82
	Check
5	Perform function test	See operator's manual for Audio 20 radio.