Test Prerequisites

Test Prerequisites

Special tools, testers and auxiliary items required

• Headlamp adjustment device (VAS 5046) or:






• Headlamp adjustment device (VAS 5047)

Test- and adjustment requirements:

• Tire pressure OK

• Cover lenses must not be damaged or dirty.

• Reflectors and bulbs OK

• Vehicle must be properly loaded.

• Move vehicle back and forth for 1 meter (3 to 4 feet) or bounce front and rear of vehicle several times up and down to settle suspension.

• The vehicle and the headlamp adjusting unit must be on flat ground.

• Inclination must be set.

• Later headlamp adjustment is not permitted on North America vehicles. These vehicles have a anti-twist mechanism.

In the trim above the headlamp, inclination measurements are stamped in "%". The headlamps must be adjusted to these specifications. Percentage information is based on a projection distance of 10 meters. For example: inclination of 1.0 % converts to approximately 10 cm.

On North America vehicles, set the inclination to 0.7 %.

For vehicles with Halogen headlamps

• For certain markets, no manual headlamp range control is offered with halogen headlamps.

- Check the headlamp height adjustment by setting to the maximum level and observing the light.

- The headlamp range adjuster thumb wheel, if present, must be in 0.

The vehicle must either have a person or 75 kg of weight on the driver seat, and it must not be loaded with any other weight.

The curb weight is the weight of the vehicle ready for operation with completely filled fuel tank (at least 90%), including the weight of all equipment items carried for operation (e.g. spare wheel, tool, vehicle jack, fire extinguisher etc.).

If the fuel tank is not at least 90% full, adjust weight as follows:

- Read fuel level from fuel gauge. Calculate additional weight needed using the following table. Place extra weight in luggage compartment.

Tank Filling Table






Example:

If the fuel tank is half full, place a 44 lbs (20 kg) weight in the luggage compartment.

• For additional weight use containers filled with water. A container filled with 5 liters of water weighs approximately 11lbs (5 kg)..

For vehicles with HID headlamps and automatic head lamp range control:

• If the vehicle has HID headlamps, then clear the DTC memory using the Vehicle Diagnosis Tester and bring the headlamp range control into Basic Setting before every headlamp adjustment.