Retrofit Audio 50 APS navigation system - AN82.61-P-0004P

MODEL 203.0## /2## /7## 1# as of 24.4.04 except CODE (990) AMG vehicles with CODE (523) MB Audio 20 radio with CODE (533) Front and rear speakers - without radio Vehicles as of model refinement 

Fig 1: Identifying Audio And Navigation Unit - Model 203.0## /2## /7## 1# As Of 24.4.04 Except Codes (990), (523) And (533)

	Remove
	Risk of explosion  caused by oxyhydrogen gas. Risk of poisoning and caustic burns  caused by swallowing battery acid. Risk of injury  caused by burns to skin and eyes from battery acid or when handling damaged leadacid batteries	No fire, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and safety glasses. Pour battery acid only into suitable and appropriately marked containers.	AS54.10-Z-0001-01A
	Notes on battery		AH54.10-P-0001-01A
1	Disconnect battery ground cable
	Disconnect/connect battery's ground cable		AR54.10-P-0003P
2.1	Remove stowage compartment in center console	With front and rear speaker - without radio - code 533 The stowage compartment is no longer required if it was retrofitted.
2.2	Remove radio	With MB Audio 20 radio, code 523 The MB Audio 20 radio is no longer required if it was retrofitted.
	Remove/install radio		AR82.60-P-7502PA
3	Remove instrument cluster
	Removing and installing instrument cluster		AR54.30-P-6015P
4.1	Remove cover below instrument panel (left)	With front and rear speaker - without radio - code 533
	Remove/install cover below instrument panel (left)		AR68.10-P-1500P
	Install
5.1	Install adapter wiring harness	With front and rear speaker - without radio - code 533 Connect adapter wiring harness between standard radio connectors and radio. They cannot be confused, since all connectors are coded.
6.1	Retrofit wiring harness	With front and rear speaker - without radio, code 533, wiring harness for CAN connection	AN82.61-P-0001-01PA
7	Retrofit antenna for global positioning system (GPS)		AN82.61-P-7474-04PB
8	Retrofit radio and navigation unit (A2/56)
	Remove/install APS radio and navigation operating unit	With MB Audio 50 APS radio, code 525	AR82.61-P-7412PA
9.1	Install cover below instrument panel (left)	With front and rear speaker - without radio - code 533
	Remove/install cover below instrument panel (left)		AR68.10-P-1500P
10	Install instrument cluster
	Removing and installing instrument cluster		AR54.30-P-6015P
11	Connect ground cable to battery
	Disconnect/connect battery's ground cable		AR54.10-P-0003P
12	Perform subsequent version coding with STAR DIAGNOSIS.	Register the new system and reconfigure MOST ring (if available). Enter the navigation parameters, such as the tire size, with STAR DIAGNOSIS.
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A
		Diagnosis system STAR DIAGNOSIS	*WH58.30-Z-1048-13A
13	Supplement special equipment	Add designations of appropriate special equipment on vehicle data card and in vehicle data card online: "MB Audio 50 APS radio, code 525".