* lamp category index according to UNECE
The technology for replacing them is given in the SERVICE INSTRUCTIONS attached to the car.
A few recommendations
Replace non-working lamps only with lamps of the same type and power.
Halogen lamps must not be handled by the glass bulb with bare hands. Hand fat (even washed and dry), falling on the glass of the lamp reduces the light output of the lamp. If all the same the lamp will be in bare hands (and not wearing clean cotton gloves, as recommended by the manufacturer), immediately rinse the glass of the lamp with alcohol.
Do not turn on halogen lamps while the car is parked. In the absence of movement, the headlights are not cooled by airflow, which can lead to overheating of both the lamp itself and the optical headlight inserts.
Lamps (H4) headlights should be replaced after two to three years of operation. During operation, their luminosity decreases over time.
The light output of the lamps can be measured on special equipment designed to adjust the headlights. One lamp should not be allowed to shine noticeably stronger than the other.
In this case, it is usually found that her balloon is either blackened or cloudy.
This lamp needs to be replaced immediately.