Remove/Install Sound System Amplifier Control Unit - AR82.62-P-7720MFC

Model 118, 177, 247 

as of model year 2022 

with code 853 ("Midline" sound system) 

Fig 1: Sound System Amplifier Control Unit Components Location - Model 177 As Of Model Year 2022 With Code 853 (Shown On Model 177.0)

Courtesy of MERCEDES-BENZ USA

Shown on model 177.0 

	Risk of injury  caused by fingers being jammed or pinched when removing, installing or aligning hoods, doors, trunk lid/rear-end door or sliding roof.	No parts of the body or limbs should be within the operating area when the components are moving.	AS00.00-Z-0011-01A
Notice	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Notes on HANDS-FREE ACCESS		AH80.61-P-0001-01A
	Remove/install
1	Switch off the ignition and keep the transmitter key outside the transmitter range (at minimum 2m).
2	Remove right rear seat of 3rd seat row.	Model 247.6 as of model year 2022 with code 847 (3rd seat row) with code 853 ("Midline" sound system)	AR91.12-P-0007MFX
3	Remove right trim in trunk.	Model 247.6 as of model year 2022 with code 853 ("Midline" sound system)	AR68.30-P-4801MFX
		Model 118.3, 177.1/9 as of model year 2022 with code 853 ("Midline" sound system)	AR68.30-P-4800MFV
		Model 118.6 as of model year 2022 with code 853 ("Midline" sound system)	AR68.30-P-4800MFD
		Model 247.0/7 as of model year 2022 with code 853 ("Midline" sound system)	AR68.30-P-4800MFB
		Model 177.0 as of model year 2022 with code 853 ("Midline" sound system)	AR68.30-P-4800MFA
4	Remove screw/bolts (2).
5	Remove nuts (3).
6	Unclip cover (1) on catch hooks (4) and remove.
7	Release and disconnect electrical connector (5).
8	Remove nuts (6) and remove sound system amplifier control unit (N40/3).
9	Install in the reverse order.
10	Commission sound system amplifier control unit (N40/3).	If sound system amplifier control unit (N40/3) is replaced.
			AD00.00-P-2000-06MFA