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Home >> Mercedes Benz >> 2023 >> GLA35 AMG >> Repair and Diagnosis >> Electrical >> Gauges >> Electrical System, Equipment & Instruments -- 247 Chassis (2 Of 3) >> Testing & Repair >> Remove/Install Instrument Cluster Control Unit - AR54.30-P-7101MFA

Remove/Install Instrument Cluster Control Unit - AR54.30-P-7101MFA

Model 118, 177, 247 

with code 521 (Connect 20 Mid (NTG7)) 

Model 118, 177, 247 

with code 525 (Connect 20 High (NTG7)) 

Model 118, 177, 247 

with code 534 (Connect 20 Premium (NTG7)) 

Model 118, 177, 247 

with code 547 (Connect 20 Entry (NTG6)) 

Model 118, 177, 247 

with code 548 (Connect 20 MID (NTG6)) 

Model 118, 177, 247 

with code 549 (Connect 20 HIGH (NTG6)) 

Fig 1: Instrument Cluster Control Unit Components Location - Model 247 With Code 521, 525, 534, 547, 548, 549
G16050556REMOVINGINSTALLINGREFER TO SELF-DIAGNOSTIC SYSTEMSNOTESIMPORTANTCourtesy of MERCEDES-BENZ USA
Notice  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
REMOVINGINSTALLING Remove/install     
1 Commission instrument cluster control unit (N133/1). If the instrument cluster control unit (N133/1) is replaced.  
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-06MFA
2 Remove door sill at front left.   AR68.30-P-4101MFA
3 Release left front seat, tilt backward and place onto rear bench seat.   AR91.10-P-1000MFA
4 Fold front left floor covering (1) forward.    
5 Lift up air duct (3) and left rear floor covering (2).    
6 Remove nuts (4).    
7 Carefully remove holder (5) and turn over with connected electric lines. NOTES
Do not crush or kink or subject electric lines to tension.
This will result in damage to the electric lines and can impair their function.
 
8 Release and disconnect electrical connectors from instrument cluster control unit (N133/1). IMPORTANT The number of electrical connectors varies according to vehicle equipment.  
9 Unscrew nuts (6) and remove instrument cluster control unit (N133/1).    
10 Install in the reverse order.