Drl starts buzzing right headlight does not come on

it can be many things.
no country told CANADA? OR HERE USA OR WHERE?
BCM just needs reset.
or HL relay bad.
is this car with DRL feature and that fails?
no country told nor if has DRL lamps that love to fail,
example you get in parked car for 16 yearS start engine
and hand brake ofF and bingo driving lights glow. up front for sure.
that is DRL so got DRL.?
LEARN that lighting laws are not the same all over earth
not at all,

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COULD BE FAULTY DRL HEAD LIGHT RELAYS OR FAULTY DIMMER SWITCH.SINCE HEADLIGHTS TURN ON AUTOMATIC.TRY USING MANUAL HEAD LIGHT SWITCH ON TURN SIGNAL SWITCH LEVER SEE IF HEADLIGHTS STAY ON IF LIGHTS STAYS ON YOU HAVE FAULTY DRL HEADLIGHT RELAY.IF LIGHTS STILL FLICKER OFF.YOU HAVE BAD DIMMER SWITCH.

Did you replace the DRL Relay in the fuse panel located on the drivers side dash? There is also one out in the fuse block under the hood.

The DRL stands for daytime running lights. There is an electronic module that controls the operation of this that is located under the dash, which is probably where your noise is coming from. The noise goes away when you turn your headlights on because the DRL will disengage. I have replaced these before on civics and it should cure your problem. When ordering your part ask for a "daytime running light module". Hope this helps.

change the headlight switch!! itself its broken inside the unner contacts

The problem as reported by many others on the internet appears to be with the DRL relay located under the hood. If you can find it (check the owner's manual), then it might be a matter of taking it out and resoldering the connectors in the base. Some people suggest taking the relay out and using the normal lights - depending on what the road rules require.

Finally, you may want to buy a new relay.

Pull the DRL fuse. DRL=Day time Running Lamps. That will disable it completely and lights will only come on with your switch. Want to keep the lights on automatic just not when started? I don't know.

The car is equipped with Daytime running lights so it will always be on...to turn it off you must go in the hood and on the right side next to the engine air filter and fuse box, there is two smaller fuze boxes and the first one going from down to up direction labels DRL left and DRL right which are two fuses 10A or so take them off and they will not come on!

DRL (Daytime Running Lights) will come on any time you start your car.
The dash lights do not come on, unless your headlights turn on. Either by a daylight sensor or if you manually turn them on by the switch.
So even though your headlights are on with the DRL, if you notice the tail lights do not come on (just like the dash lights don't).

To test if your dash lights do work, turn your headlight switch on. You should the the tail lights and dash lights come on.