Electrical headlamp range adjustment (LWR) diagnosis, function

AD82.10-P-3000A

Electrical headlamp range adjustment (LWR) diagnosis, function

20.11.2019

Model

202, 208, 210

with code 612 (Xenon headlamp unit)

 Danger

Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)

Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines.

AS00.00-Z-0035-01A

 Danger

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 on xenon headlamps and glass splinters produced by bursting xenon bulbs. Risk of poisoning caused by inhalation of mercury vapors and by swallowing of/skin contact with toxic salts and mercury compounds.

Do not touch parts conducting high voltage. Persons with active electronic implants (e.g. cardiac pacemakers) must never work on xenon headlamps. Switch off the entire lighting system. Wear insulated safety shoes, safety glasses and protective gloves. Remove highly inflammable materials from the danger zone. Ensure sufficient ventilation in the working area.

AS82.10-Z-0001-01A

Electrical headlamp range adjustment (HRA) diagnosis, previous knowledge

AD82.10-P-2000A

Function check

Test step/test procedure

Operation/requirement

Specified value

Possible cause/remedy

1

Headlamp range adjustment
Function

Low beams: ON
Align headlamp adjustment testing unit with one headlamp
Load or relieve load on right front or right rear of vehicle

The light/dark boundary must adjust to the previously determined position after a delay when loading and unloading

Read out fault memory with HHT: 

AD00.00-P-2003A