How to I dip the headlights?

Fuses F15 and F16 are okay?

https://fuse-box.info/peugeot/peugeot-308-t7-2007-2013-fuses

This says it might be the switch. I can't find relays, so the switch is carrying the power (amps) instead of switching it through a relay.

https://www.google.com/search?q=2010+peugeot+308+main+beam+headlights+not+working

https://www.google.com/search?q=2010+peugeot+308+main+beam+headlights+relay+location

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There is no quick fix for things like that , grab a volt meter and start checking voltage, Could be a blown high beam fuse or faulty relay , follow voltage from headlight switch to dip switch from dip switch to headlight relay from headlight relay to high beam light , along the way you will find the fault .

These are all different circuits. The brake lights are on a 10amp fuse - the headlights are on a 50amp fuse - and the parking and dash lights are on a 20amp fuse.
Do you have power going into the headlight switch and the brake light switch ?

did you replace the dimmer switch on the dash by the headlight switch

The Horn is under the hood just remove the screws holding the radiator cover, I don't think it's necessary to remove all of them, just the drivers side, enough to be able to remove the headlight assembly. Then there's 3 bolts holding the headlight assembly, on top 1-10mm, & 1-12mm they are right on top, & quite visible, next underneath there is another 10mm bolt about the middle, in sideways, (check pix) just remove these, and the headlight elect plug (push down on the back of the plug clip to release) now, just sort of jostle the headlight back, & forward (but forward a bit more) while lifting it, and pulling back the loose radiator cover to clear, and it should come right out

First check the fuse, the clearance lights are not factory in most cases and the wiring gets shorted from poor wiring. Once you replace the fuse see if the lights come on, if the fuse blows right away find the wiring to the clearance lights and disconnect them, if the short goes away it is a I said the wiring is shorted. If you don't have the owner's manual you should be able to download it at the link provided. It should be fuse #10 a 20 AMP in the interior fuse box. http://www.fordservicecontent.com/Ford_Content/catalog/owner_guides/97ecoog1e.pdf

Replace the switch

If you have other problems ,I have
a 1992 service manual & wiring diagrams

Turn off or time out?

The DRL's are separate from the actual headlights. It sounds like your headlights aren't working at all. The first thing I would check would be the headlight fuse(s), or relay(s). The location for these should be in your owner's manual.

Hope this helps!

U got a BURNED LiGHT SWiTCH, usually they have plastic inside the contactor that selects the switch from dipping/high and turns on ur LiGHTS!
Replace the whole LIGHT SWITCH assembly!
Hope that might help u out!

Are u sure that the bulbs are OK? I had no dipped lights on mine, & thought it must be a fuse or another electrical fault. It turned out, both bulbs had gone. I think this often happens when one side goes, the other soon follows.