Test step/Test scope	Test condition	Nominal value	Possible cause/Remedy 1)
1.0 Function test	Low beam: ON Verify the light-dark border with the help of a headlamp adjustment tester Load or unload right front or right rear of vehicle as necessary.	With a time delay, the light-dark border must shift to the previously set parameter.	Test with HHT, 23 Test

1) Observe Preparation for Test, see 22.

Conventional tools, test equipment

Description	Brand, model, etc.
Headlamp adjustment tester 1)	Bosch

1) Available through the MBUSA Standard Equipment Program.