Remove/Install LED Actuation Module For Front Headlamp Unit - AR82.10-P-4656WM

Model 172.4 

with code 640 (High-performance LED) 

Model 172.4 

with code 641 (Dynamic LED headlamps, left-hand traffic) 

Model 172.4 

with code 642 (Dynamic LED headlamps, right-hand traffic) 

Fig 1: Front Headlamp Unit LED Actuation Module Components Location - Model 172.4 With Codes 640, 641, 642

Courtesy of MERCEDES-BENZ USA

	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Remove left front Headlamp unit (E1) and/or right front Headlamp unit (E2).		AR82.10-P-4733W
2	Remove screws (1) and detach front left exterior lighting LED actuation module (E1n7) or front right exterior lighting LED actuation module (E2n7) far enough to gain access to the electrical connector attached to it.	: Ensure gasket is correctly installed.
3	Release electrical connector from front left exterior lighting LED actuation module (E1n7) or front right exterior lighting LED actuation module (E2n7), disconnect it and remove front left exterior lighting LED actuation module (E1n7) or front right exterior lighting LED actuation module (E2n7).
4	Install in the reverse order.
5	Attach data matrix code adhesive label to left front Headlamp unit (E1) or right front Headlamp unit (E2).	When replacing the front left exterior lighting LED actuation module (E1n7) or the front right exterior lighting LED actuation module (E2n7). The Data Matrix code adhesive label is included with the replacement part.
6	Commission front left exterior lighting LED actuation module (E1n7) or front right exterior lighting LED actuation module (E2n7).	When replacing the front left exterior lighting LED actuation module (E1n7) or the front right exterior lighting LED actuation module (E2n7).
		: Note Data Matrix code on the left front Headlamp unit (E1) or right front Headlamp unit (E2).	AD00.00-P-2000-04A