Remove/install bulbs of headlamp unit - AR82.10-P-1201WA

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 Headlamp Unit Bulbs Remove/Install Components

Courtesy of MERCEDES-BENZ USA

Picture item, etc.	Work instructions
	Risk of death  caused by high voltage at xenon headlamps. Risk of explosion/risk of fire  caused by highly flammable materials in the vicinity of damaged xenon bulbs. Risk of injury  caused by UV light, hot components at xenon headlamps and glass splinters produced by bursting xenon bulbs. Risk of poisoning  caused by inhalation of mercury vapors and by toxic salts and mercury compounds being ingested or coming into contact with skin	Do not come into contact with parts that are under high voltage. Persons with active electronic implants  (e.g. heart pacemakers) must never work on xenon headlamps. Switch off entire lighting system. Wear insulated safety shoes, safety glasses and protective gloves. Remove highly inflammable materials from the hazard area. Ensure sufficient ventilation in the working area.	AS82.10-Z-0001-01A
	Do not touch the glass bulb elements of the bulbs with fingers, but use a soft cloth free of oil and grease; otherwise the bulbs can be damaged by overheating during operation
	Switch off the exterior lights prior to the bulb replacement in order to avoid a short circuit
	Switch off ignition and remove transmitter key or KEYLESS-GO start/stop button from electronic ignition lock control unit	KEYLESS-GO start/stop button only on vehicles with code (889) Keyless-Go.
	Open service flap in left or right front fender liner	When removing left xenon bulb with integrated ignition module (E1e10) or right xenon bulb with integrated ignition module (E2e10).
E1e9, E2e9	Left cornering lights, right cornering lights	Remove housing cover (2). Disconnect electrical connector (3) and remove left cornering light (E1e9) or right cornering light (E2e9).
E1e10, E2e10	Left xenon bulb with integrated ignition module, right xenon bulb with integrated ignition module	Carefully remove left xenon bulb with integral ignition module (E1e10) or right xenon bulb with integral ignition module (E2e10) from the reflector, risk of breakage. Remove housing cover (1), unlock bracket (4), fold it up and remove left xenon bulb with integral ignition module (E1e10) or right xenon bulb with integral ignition module (E2e10). Disconnect electrical connector (5) and remove left xenon bulb with integral ignition module (E1e10) or right xenon bulb with integral ignition module (E2e10).