Retrofit comfort telephony - AN82.70-P-0008RT

MODEL 251 as of model year 2011 with CODE 510 (Audio 20 with CD changer) without CODE 494 (US version) without CODE 830 (Vehicles for China, additional parts) 

MODEL 251 as of model year 2011 with CODE 512 (COMAND APS with DVD changer) without CODE 494 (US version) without CODE 830 (Vehicles for China, additional parts) 

MODEL 251 as of model year 2011 with CODE 523 (MB Audio 20 radio) without CODE 494 (US version) without CODE 830 (Vehicles for China, additional parts) 

MODEL 251 as of model year 2011 with CODE 525 (MB Audio 50 APS radio) without CODE 494 (US version) without CODE 830 (Vehicles for China, additional parts) 

MODEL 251 as of model year 2011 with CODE 527 (COMAND APS (with navigation)) without CODE 494 (US version) without CODE 830 (Vehicles for China, additional parts) 

Fig 1: Identifying Retrofit Comfort Telephony

Courtesy of MERCEDES-BENZ USA

	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove
1	Remove headliner	Vehicles with CODE 413 (Panoramic glass sunroof with top sliding sunroof) or with CODE 414 (Power glass tilting/sliding roof)
		With CODE 413 (Panoramic glass sunroof with top sliding sunroof)	AR68.30-P-4300RT
		With CODE 414 (Power glass tilting/sliding roof)	AR68.30-P-4300RTA
2	Remove radio
			AR82.60-P-7502RT
3	Remove front center console
			AR68.20-P-2000RT
		Connect comfort telephony wiring harness electrical connectors.
4	Remove rear center console	Except CODE 225 (Rear center individual seat)
5	Remove 2nd seat row rear seats
			AR91.12-P-1000RT
6	Remove center rear individual seat	With CODE 225 (Rear center individual seat)
7	Remove covering for rear center console support	Except CODE 225 (Rear center individual seat)
8	Remove cargo retainers behind driver seat and front passenger seat
9	Remove underfloor plates at left and right
10	Open cover for cable duct under door sill at left and right rear
11	Detach fuse and relay module in rear
			AR54.15-P-1261RT
		Do not disconnect electrically.
	Install
12	Retrofit phone bracket (1)		AN82.70-P-0001-02RT
13	Retrofit comfort telephony wiring harness		AN82.70-P-0008-01RT
14	Assemble vehicle	Operation steps 11 to 1.
		Bolt, cargo retainers to body	*BA68.50-P-1001-03G
15	Enter special equipment in online vehicle data card via Vehicle Documentation System (VeDoc)	Add:  CODE 386 (Comfort telephony).
16	Document retrofitted equipment in VeDoc	Attach the note "Comfort telephony retrofitted as per AN82.70-P-0008RT " under field organization texts to design group 82.
17	Connect diagnostic system and select vehicle via the vehicle identification number (VIN)
			AD00.00-P-2000-04A
18	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 component
19	Disconnect diagnostic system
			AD00.00-P-2000-04A
	Check
20	Perform function test