Remove/install xenon headlamp control unit - AR82.10-P-4632W

MODEL 172.4 with CODE (615) Bi-xenon headlamp unit with integrated curve illumination with CODE (621) Intelligent Light System (left-hand traffic) with CODE (622) Intelligent Light System (right-hand traffic) 

Shown on the left front lamp unit (E1) 

Fig 1: Identifying Xenon Headlamp Control Unit Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Connect Star Diagnosis and perform initial startup of left xenon light power supply module (E1n4) or right xenon light power supply module (E2n4)	When replacing left xenon light power supply module (E1n4) or right xenon light power supply module (E2n4).	AD00.00-P-2000-04A
2	Remove left front lamp unit (E1) or right front lamp unit (E2)		AR82.10-P-4730W
3	Remove bolts (1)
4	Remove left xenon light power supply module (E1n4) or right xenon light power supply module (E2n4) from left front lamp unit (E1) or right front lamp unit (E2)	Ensure the seal (2) at left xenon light power supply module (E1n4) or right xenon light power supply module (E2n4) is seated correctly.
5	Install in the reverse order