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Home >> Mercedes Benz >> 2019 >> C300 4Matic, 2D Convertible >> Repair and Diagnosis >> Accessories & Equipment >> Wiper/Washer Systems >> Electrical System - Body - 205 Chassis 3 Of 6 >> Testing & Repair >> Remove/Install Headlamp Control Unit - AR82.10-P-4660LW

Remove/Install Headlamp Control Unit - AR82.10-P-4660LW

MODEL 205 with CODE 631 (Headlights LED static, left-hand traffic) 

MODEL 205 with CODE 632 (Headlamps, LED, static, right-side traffic) 

MODEL 205 with CODE 640 (High-performance LED) 

MODEL 205 with CODE 641 (LED HEADLAMP, DYNAMIC, LEFT-HAND TRAFFIC) 

MODEL 205 with CODE 642 (LED HEADLAMP, DYNAMIC, RIGHT-HAND TRAFFIC) 

Fig 1: Headlamp Control Unit Components Location - Model 205 With Codes 631, 632, 640, 641 And 642
G14187970Courtesy of MERCEDES-BENZ USA

Shown on left side of vehicle 

G14187971Courtesy of MERCEDES-BENZ USA

Right side of vehicle 

NOTES Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
REMOVINGINSTALLING Remove/install     
1 Perform initial startup of left headlamp control unit (E1n9) or right headlamp control unit (E2n9) When replacing the left headlamp control unit (E1n9) or right headlamp control unit (E2n9).  
REFER TO SELF DIAGNOSTIC SYSTEMS Connect STAR DIAGNOSIS and read out fault memory   AD00.00-P-2000-04B
2 Switch off ignition and remove transmitter key    
3 Turn left or right front wheel inwards    
4 Detach front section of fender liner (1) until left headlamp control unit (E1n9) or right headlamp control unit (E2n9) is accessible   AR88.10-P-1300LW
5 Remove screw/bolt (4) and place bracket (5) to one side When removing right headlamp control unit (E2n9).  
6 Remove screws/bolts (2) at left headlamp control unit (E1n9) or right headlamp control unit (E2n9)    
7 Pull out left headlamp control unit (E1n9) or right headlamp control unit (E2n9) until electrical connectors (3) can be separated INSTALLATION IMPORTANTInstallation:  Ensure that seal is seated correctly at left headlamp control unit (E1n9) or right headlamp control unit (E2n9).  
8 Disconnect electrical connectors (3) and remove left headlamp control unit (E1n9) or right headlamp control unit (E2n9)    
9 Install in the reverse order