Headlamp, Adjusting, General Information
Special tools and workshop equipment required
- Headlamp Adjusting Unit :VAS 621 001
- The following test and adjustment description applies to all countries.
- However, national guidelines or regulations of the country must be observed.
Testing and Adjusting Conditions
Conditions
- Tire pressure is OK.
- The headlamp glass must be clean and dry.
- The headlamp glass must not be damaged.
- Headlamp reflectors and bulbs are OK.
- Vehicles with matrix LED headlamps: only use the Headlight Adjusting Unit :VAS 621 001 for headlamp adjustment.
- The electro-mechanical parking brake must not be engaged so that the vehicle is not under stress.
- The vehicle and headlamp adjusting unit must be on a level surface.
- Keep all doors and the rear lid closed for the duration of the testing/adjusting procedure.
Vehicles with air suspension
-- Fill the air suspension pressure reservoir. Start the engine and let it run in the neutral for approximately two minutes.
Continuation for all vehicles
Vehicles with coil springs
-- Establish vehicle loads.
Continuation for all vehicles
Vehicle load on driver seat in otherwise unloaded vehicle (curb weight).
Conditions
- One person or 75 kg (165.35 lbs) (165.35 lbs).
The curb weight is the weight of the operational vehicle with a completely full fuel tank, including the weight of all equipment carried while in operation.
Conditions
- Fuel tank, washer fluid reservoir, and SCR tank: at least 90% full.
- Equipment: for example, spare tire, tools, vehicle jack, fire extinguisher, etc.
If the fuel tank is not at least 90% full, the load must be prepared as follows.
-- Check the fuel tank fill level in the instrument cluster fuel gauge and compare it with the following table. Place additional weight in the luggage compartment, if necessary.
| Fuel Gauge | Additional Weight in kg |
|---|---|
| empty | 56 |
| 1/4 | 42 |
| 1/2 | 28 |
| 3/4 | 14 |
| full | 0 |
Example: if the fuel tank is half full, an additional weight of 28 kg (61.73 lbs) (61.73 lbs) must be placed in the luggage compartment.
Tip
Use containers filled with water as additional weight (a five liter container filled with water weighs approximately 5 kg (11.02 lbs) (11.02 lbs)).
Conditions
- The angle dimension -arrow- is stamped for ECE countries on the upper edge of the headlamp -1- in "%".
- The standard angle dimension for the USA is 0.7%.
Tip
The percentage value is based on a 10 meter projection distance. An angle dimension of 1.0%, for example, converts to 10 cm.