try new light bulbs
check fuses, if good, possibly burnt bulbs or wires, check for voltage at wires.
Most likely a blown fuse or burnt out bulbs. Check the fuses first
check fuses, and then check for power to the bulbs check for power in and out of brake switch
The low beam bulbs are burnt out. See the Sources and Related Links below for bulb info. Also, check your fuses...probably even before inspecting the bulbs.
first check the bulbs then the curcut then the fuses on the fuse board
check your bulbs and fuses check your bulbs and fuses
There are a few things to check, first are the bulbs good? high and low are separate elements and the low could be blown out. Second is check the fuses, high beam and low beams often have separate fuses. Third would be the dimmer switch.
Possibly the multifunction switch (switch in columm). Check the bulbs, fuses etc first
Check the bulbs, switch, connectors, relays and possibly fuses, depending on how your vehicle is wired.
check multifunction switch, modules & relays
Check the fuses Check the backup switch Check the wiring - make sure that there is good contact.
Next step would be to check the fuses