6
Maintenance
Lamps
Calibration of headlamp
■ The headlamp is already calibrated for a newly delivered vehicle. If the vehicle is used
frequently for transport of heavy loads, the re-calibration is probably required for the
headlamp. It’s recommended to fulfill the calibration of headlamp by a BYD Auto
Authorized Service Station.
Mist formation of lamps
■ After heavy rain or washing of vehicle, the mist formation will probably occur in the
combination lamps, rear lamps, or turn signal lamps on exterior rearview mirrors. This
symptom is similar to the condensation symptom on the inner windows of vehicle in
rainy weathers and doesn’t mean that your vehicle is malfunctioned.
■ A lamp is a relatively enclosed and narrow space and is at really high temperature
(The mask and the reflective mirror can be easily burnt and deformed.) when
illuminated so that the heat dissipation is required. To meet the heat dissipation need
under illuminated status, the lamps are provided with heat dissipation holes on the
lamp housing to form convective heat dissipation with surrounding environment. The
higher the temperature difference is, the more active the convection is. During the
convection process, the moisture contained in the air will be carried inevitably into the
lamp. Due to the influences of the factors including sunshine exposure, convection,
and lamp heating value, the moisture contained in the air will easily condense to mists
or water drips on the lamp surfaces of lower temperature, which is referred to the lamp
mist symptom.
Warning
● The headlamp bulbs will become really hot when illuminated. The grease, sweat
stain, or scratch on the bulb glass surface will result in the burst of bulb due to
overheating.
Tip
● The mist formed on the inner side of headlamp and the inner side of turn signal lamp
on the exterior rearview mirrors is probably caused by really high humidity in the air
or the high temperature difference between vehicle and its surrounding
environment. Turning on the headlamp or turn signal lamp during driving will make
the mist in the lamps to disappear after driving for a period.
● Upon detection of clear water deposit within the lamps, it’s recommended to drive
the vehicle to a BYD Auto Authorized Service Station for checking.
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