Yes
the high and low beam work on the same bulb... if your low beam isn't working the problem is electrical
A possible reason that only one high-beam will work is that the malfunctioning bulb is burnt out.
replace the high beam bulb
Passenger side or driver side? BClear. The low beam is built into the same bulb as the high beam. Just pull the bulb out from behind the housing under the hood and replace it. If the low beam doesnt work you have to replace the whole bulb. They're not very expensive.
Burnt out or loosely connected bulb.
change the light bulb that does not go on, on low beam, it possible that the wire inside the bulb for low beam is broken
If the low beams are not working on a Peugeot 306, it is possible that the low beam headlights are burned out. If the high beam headlamps are part of the same bulb, perhaps the wrong bulbs are in the sockets. Some older cars have both the high and low beams running off the same bulb and the low beam can burn out both sides at the same time.
No the high beam filament is independent from the low beam filament You can run them seperately or together . it depends on how the lights are set up. For instance if you have your high beam on you may have your lows running at the same time, however if your low beam is on low beam setting, your highs are always turned of It sounds like you may need to look at your fuses or your switch.
If only one beam isn't working, it probably isn't the relay. More likely, it's in either the harness or the wiring.
Because there are two light bulbs and the low beam bulb is burned out
Usually yes.
Check the bulb Check to see if you are getting power to the socket