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Home >> Mercedes Benz >> 2017 >> GLS450 >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Electrical System - Body - 166 Chassis 4 Of 8 >> Testing & Repair >> Remove/Install Fan For Headlamp Unit - AR82.10-P-4742GQC

Remove/Install Fan For Headlamp Unit - AR82.10-P-4742GQC

Model 166 as of model year 2016 with code 640 (High-performance LED) 

Model 166 as of model year 2016 with code 641 (Headlamps, LED, dynamic, left-side traffic) 

Model 166 as of model year 2016 with code 642 (Headlamps, LED, dynamic, right-side traffic) 

Model 292 with code 640 (High-performance LED) 

Model 292 with code 641 (Headlamps, LED, dynamic, left-side traffic) 

Model 292 with code 642 (Headlamps, LED, dynamic, right-side traffic) 

Fig 1: Fan For Lamp Unit Components Location - Model 166 As Of Model Year 2016 With Code 640, 641, 642 (Shown On The Left Front Lamp Unit)
G14137001Courtesy of MERCEDES-BENZ USA

Shown on the left front lamp unit (E1) 

NOTES Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
REMOVING Remove     
1 Remove left front lamp unit (E1) or right front lamp unit (E2)   AR82.10-P-4730GQC 
DANGER Risk of injury  caused by burns to skin and eyes, risk of poisoning caused by inhaling vapors when working with plastics Wear protective gloves and safety glasses. Ensure that the work area is adequately ventilated. AS00.00-Z-0001-02A
2.1
REFER TO SPECIAL TOOLS
Cut open housing of left front lamp unit (E1) or right front lamp unit (E2) within the bar (1), along the notch using a hot knife 000 588 03 84 00 Hot knife When removing left front lamp unit fan motor 1 (E1m4) or right front lamp unit fan motor 1 (E2m4). If the cap (5) is not fitted.
NOTES The bar (1) may not be damaged. Otherwise the housing may become leaky.
NOTES Carefully cut open the housing. Otherwise components in the housing may become damaged.
WS82.00-P-0026B
2.2 Remove screws/bolts (4) and remove cap (5) If the cap (5) is fitted.  
3 Disconnect electrical connector (2) When removing left front lamp unit fan motor 1 (E1m4) or right front lamp unit fan motor 1 (E2m4).  
4 Loosen mounting clamp (3) and remove left front lamp unit fan motor 1 (E1m4) or right front lamp unit fan motor 1 (E2m4) When removing left front lamp unit fan motor 1 (E1m4) or right front lamp unit fan motor 1 (E2m4).  
5 Remove left front exterior lights LED actuation module (E1n7) or right front exterior lights LED actuation module (E2n7) When removing left front lamp unit fan motor 2 (E1m5) or right front lamp unit fan motor 2 (E2m5). AR82.10-P-4650GQC 
6 Remove bolt (6) When removing left front lamp unit fan motor 2 (E1m5) or right front lamp unit fan motor 2 (E2m5).  
7 Pull left front lamp unit fan motor 2 (E1m5) or right front lamp unit fan motor 2 (E2m5) out until electrical connector (7) can be disconnected When removing left front lamp unit fan motor 2 (E1m5) or right front lamp unit fan motor 2 (E2m5).  
8 Disconnect electrical connector (7) When removing left front lamp unit fan motor 2 (E1m5) or right front lamp unit fan motor 2 (E2m5).  
9 Remove left front lamp unit fan motor 2 (E1m5) or right front lamp unit fan motor 2 (E2m5) When removing left front lamp unit fan motor 2 (E1m5) or right front lamp unit fan motor 2 (E2m5).  
INSTALLING Install     
10 Connect electrical connector (7) to fan motor 2, left front lamp unit (E1m5) or fan motor 2, right front lamp unit (E2m5) When installing fan motor 2, left front lamp unit (E1m5) or fan motor 2, right front lamp unit (E2m5).  
11 Position fan motor 2, left front lamp unit (E1m5) or fan motor 2, right front lamp unit (E2m5) and tighten with screw/bolt (6) When installing fan motor 2, left front lamp unit (E1m5) or fan motor 2, right front lamp unit (E2m5).  
12 Install left front actuation module, LED exterior lighting (E1n7) or right front actuation module, LED exterior lighting (E2n7) When installing fan motor 2, left front lamp unit (E1m5) or fan motor 2, right front lamp unit (E2m5). AR82.10-P-4650GQC 
13 Insert fan motor 1, left front lamp unit (E1m4) or fan motor 1, right front lamp unit (E2m4) When installing fan motor 1, left front lamp unit (E1m4) or fan motor 1, right front lamp unit (E2m4).  
14 Install mounting clamp (3) When installing fan motor 1, left front lamp unit (E1m4) or fan motor 1, right front lamp unit (E2m4).  
15 Connect electrical connector (2) When installing fan motor 1, left front lamp unit (E1m4) or fan motor 1, right front lamp unit (E2m4).  
16 Position cap (5) on bar (1) and tighten with screws/bolts (4) When installing fan motor 1, left front lamp unit (E1 m4) or fan motor 1, right front lamp unit (E2m4).
NOTES The cap (5) must be positioned exactly on the bar (1) and tightened with screws/bolts (4). Otherwise the housing of the lamp unit (E1, E2) may become leaky.
 
17 Install left front lamp unit (E1) and right front lamp unit (E2)   AR82.10-P-4730GQC