Retrofit Audio 20 CD With Touchpad - AN82.60-P-0017LW

Model 205.0/2 with code 520 (Audio 20 USB) except code 460 (Canada version) except code 494 (US version) except code 498 (Japanese version) except code 830 (China version) 

Courtesy of MERCEDES-BENZ USA

Topical note	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove
1	Remove Audio 20 USB head unit (A26/17)
		The head unit (A26/17) Audio 20 USB is no longer required.	AR82.85-P-1100LW
2	Remove upper control panel control unit
		The upper control panel control unit is no longer required.	AR54.21-P-1262LW
3	Remove audio/COMAND control panel
			AR54.21-P-0500LW
4	Detach wiring harness of upper control panel control unit from center console cover	The wiring harness for the upper control panel control unit is no longer required.
5	Remove left front floor covering
			AR68.20-P-2050LW
	Install
6	Install touchpad		AN82.60-P-0017-03LW
7	Retrofit CAN wiring harness		AN82.60-P-0017-02LW
8	Retrofit touchpad wiring harness		AN82.60-P-0017-01LW
9	Install new upper control panel control unit
			AR54.21-P-1262LW
10	Install Audio 20 CD head unit (A26/17)
			AR82.85-P-1100LW
11	Install remaining parts
	Update Vehicle Documentation (VeDoc)
12	Delete special equipment in on-line vehicle data card	CODE 520 (Audio 20 USB)
13	Enter special equipment in on-line vehicle data card	Code 522 (Audio 20 radio) Code 818 (Single CD drive)
14	Attach note "Audio 20 radio retrofitted as per AN82.60-P-0017LW " under field organization texts to design group 82
15	Connect diagnostic system and select vehicle via the vehicle identification number (VIN)
			AD00.00-P-2000-04B
16	Carry out variant coding using software calibration number (SCN)	Electronic ignition switch control unit Head unit
17	Disconnect diagnostic system
			AD00.00-P-2000-04B
	Check
18	Perform function test	See Owner's Manual.