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Home >> Mercedes Benz >> 2017 >> GLS350d >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Electrical System - Body - 166 Chassis 4 Of 8 >> Testing & Repair >> Remove/Install Headlamp Unit >> Remove/Install Headlamp Unit - AR82.10-P-4730GQC

Remove/Install Headlamp Unit - AR82.10-P-4730GQC

Model 166 as of model year 2016 

Model 292 

Fig 1: Headlamp Unit Components Location - Model 166 As Of Model Year 2016
G14136999Courtesy of MERCEDES-BENZ USA

Shown on model 292 with code 642 (Dynamic right-hand traffic LED headlamp) 

REMOVINGINSTALLING Remove/install     
1
REFER TO SELF-DIAGNOSTIC SYSTEMS
Connect diagnostic system and save basic data of lamp unit (1) Only when replacing the lamp unit (1). AD00.00-P-2000-04A
2 Switch off ignition and store transmitter key outside of transmission range (min. 2 m)    
3 Remove front bumper Model 166 as of model year 2016 AR88.20-P-2000GQ
    Model 292 AR88.20-P-2000GQC
4 Remove screws (2)    
5 Take out lamp unit (1) until electrical connector at lamp unit (1) is accessible    
6 Disconnect electrical connector from lamp unit (1)    
7 Lead washer fluid hose and cable duct out of bracket at bottom of lamp unit (1) When removing the left lamp unit (1).
IMPORTANT Whether the cable duct is present depends on the equipment variant.
 
8 Remove lamp unit (1)    
9 Remove lamp unit LED module (4) When replacing the lamp unit (1).
Model 166 as of model year 2016 with code 640 (High-performance LED)
Model 166 as of model year 2016 with code 641 (Dynamic LED headlamps, left-hand traffic)
Model 166 as of model year 2016 with code 642 (Dynamic LED headlamps, right-hand traffic)
Model 292 with code 640 (High-performance LED)
Model 292 with code 641 (Dynamic LED headlamps, left-hand traffic)
Model 292 with code 642 (Dynamic LED headlamps, right-hand traffic)
AR82.10-P-4656GQC 
10 Remove headlamp control unit When replacing the lamp unit (1). AR82.10-P-4660GQC 
11 Note series of digits of LAM number of headlamp control unit When replacing the lamp unit (1).  
12 Remove LED actuation module, exterior lights (3) When replacing the lamp unit (1).
Model 166 as of model year 2016 with code 640 (High-performance LED)
Model 166 as of model year 2016 with code 641 (Dynamic LED headlamps, left-hand traffic)
Model 166 as of model year 2016 with code 642 (Dynamic LED headlamps, right-hand traffic)
Model 292 with code 640 (High-performance LED)
Model 292 with code 641 (Dynamic LED headlamps, left-hand traffic)
Model 292 with code 642 (Dynamic LED headlamps, right-hand traffic)
AR82.10-P-4650GQC 
13 Install in the reverse order    
  Initial startup     
14 Carry out SCN coding of lamp unit (1) Only after replacing the lamp unit (1). AR54.21-P-0015X
15
REFER TO SELF-DIAGNOSTIC SYSTEMS
Transfer previously stored basic data to lamp unit (1) Only after replacing the lamp unit (1). AD00.00-P-2000-04A
16 Carry out initial startup of lamp unit (1) Only after replacing the lamp unit (1).  
INSPECT Check     
17
REFER TO MAINTENANCE
Check headlamp adjustment and correct if necessary   AP82.10-P-8260I