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Home >> Mercedes Benz >> 2021 >> GLB250 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Accessories Control Systems >> Electrical System - Body - 247 Chassis (2 Of 3) >> Testing & Repair >> Remove/Install Loudspeaker Amplifier Control Unit >> Remove/Install Loudspeaker Amplifier Control Unit - AR82.62-P-7720MFA
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Remove/Install Loudspeaker Amplifier Control Unit - AR82.62-P-7720MFA

Model 118, 177, 247 with code 853 ("Midline" sound system) 

MODIFICATION NOTES

31.10.2019 Remove right rear seat on 3rd seat row. Operation step 2.2.  
Fig 1: Loudspeaker Amplifier Control Unit Components Location - Model 247 With Code 853 (Shown On Model 177.0)
G14689934Courtesy of MERCEDES-BENZ USA

Shown on model 177.0 with code 853 ("Midline" sound system) 

WARNING 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
Topical note  Notes on avoiding damage to optical fibers during repair work   AH82.60-P-0001-05AK
Topical note  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
REMOVINGINSTALLING Remove/install     
1 Switch off ignition and store transmitter key outside of transmitter range (min. 2 m).    
2.1 Remove load compartment floor (1). Model 118, 177, 247.0/7 with code 853 ("Midline" sound system)
Model 247.6 with code 853 ("Midline" sound system) except code 847 (3rd seat row)
 
2.2 Remove right rear seat of 3rd seat row. Model 247.6 with code 847 (3rd seat row) with code 853 ("Midline" sound system) AR91.12-P-0007MFX
3 Unclip cover (2) at catches (3). If installed.  
4 Release and disconnect electrical connector (4).    
5 Operate catch (5) and remove sound system amplifier control unit (N40/3).    
6 Install in the reverse order.    
7 Commission sound system amplifier control unit (N40/3). If sound system amplifier control unit (N40/3) is replaced.  
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-06MFA