Check the serviceability of outdoor lighting and signaling devices in the following sequence.
Headlights (low and high beam).
Front side lights..
Rear side lights.
Brake lights.
Direction indicator lights.
Side turn signal repeaters.
Reversing lights.
Hazard warning lights.
Registration plate illumination lights.
Upper brake light.
Front fog lights (for some vehicle versions).
Rear fog light.
If you find a burnt-out lamp, replace it with a working one immediately.

