Retrofit audio 20 CD with CD changer - AN82.60-P-0012RT

MODEL 251 as of model year 2009 with CODE 523 (MB Audio 20 radio) without CODE 494 (US version) without CODE 498 (Japanese version) without CODE 511 (Audio 50 APS with DVD changer) without CODE 512 (COMAND APS with DVD changer) without CODE 525 (MB Audio 50 APS radio) without CODE 527 (COMAND APS (with navigation)) without CODE 830 (Vehicles for China, additional parts) 

Shown on model 164 

Fig 1: Identifying Radio - Shown On Model 164

Courtesy of MERCEDES-BENZ USA

	Remove
1	Remove radio (A2)
			AR82.60-P-7502RT
		The removed audio component is no longer required.
	Install
2	Install new radio (A2)
			AR82.60-P-7502RT
3	Enter special equipment in online vehicle data card using the vehicle documentation system (VeDoc)	Delete:  CODE 523 (MB Audio 20 radio) Add:  CODE 510 (Audio 20 CD with CD changer)
4	Document retrofitted equipment in VeDoc	Attach note "Audio 20 CD with CD changer retrofitted as per AN82.60-P-0012RT " under field organization texts to design group 82.
5	Connect diagnostic system and select vehicle via the vehicle identification number (VIN)
			AD00.00-P-2000-04A
6	Perform variant coding with XENTRY using the software calibration number (SCN)	Variant coding with XENTRY is carried out for the following control units using SCN: Instrument cluster Audio 20 radio (A2)
7	Disconnect diagnostic system
			AD00.00-P-2000-04A
	Check
8	Perform function test