Hi my mercedes s320 w221 the driver side headlight has stopped working i have replaced the xzeon bulb which coated me 70 pounds but still does not come on Please can someone help also have another Problem dash shOws hand break is on. And driver side window is not opening

There could be several reasons why the driver side headlight on your 2007 Pontiac G6 is not working. Some possible causes include a blown headlight bulb, a faulty headlight relay, or a problem with the headlight wiring. It's also possible that the issue is related to the turn signal, as you mentioned that it was staying on. I would recommend checking the headlight bulb first. If it is blown, replace it with a new one. If the bulb is fine, the issue may be with the headlight relay or wiring. You can also check the turn signal switch or the multifunction switch, which controls the turn signals and headlight. It may be possible that the switch is defective or malfunctioning. It would be best to get the vehicle inspected by a professional mechanic to determine the cause of the problem and make the necessary repairs.

Solution: If both headlights aren't working, it's unlikely that a bulb is at fault. The likely cause is a fuse, headlight relay, headlight switch, dimmer switch or a wiring fault. ... Consult your owner's manual to locate the main fuse for the headlight circuit and replace that fuse with one having the same amp rating.
OR
Most total headlight failures are caused by a bad component like a fuse, relay, or module. Wiring problems can also cause both headlights to stop working. High beam headlights don't work or low beams don't work. The cause: A burned out bulb, or a problem with the high beam switch or relay.
https://www.lifewire.com/fix-non-working-headlights-4137021

What happens when you turn the key? Do the door locks work? Do the headlights work? Once I get that info I can help point you in the right direction

You may have blown a fuse, check fuses first then before you try to replace the bulb again check for broken wires or the correct bulb

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check that the ground wire is connected to the bulb and the ground point

The bulb holders are the smaller,usually white, twist locks directly above the large black headlight cover. It's tucked under the cross bar the bonnet catch bolts to. If there is no bulbs in there you will need the orange coated ones. If none of the indicators work check the fuses and the relay as well. MERCEDES W208 W210 FRONT TURN SIGNAL LIGHT BULB REPLACEMENT REMOVAL

replace the window switch

furst you must remove the bumper!

Purchase the correct bulb, open your hood, unscrew the white retaining ring behind the non working lamp when loose turn black connection 1/4 turn counter clockwise till tabs line up pull straight back remove old bulb put on rubber gloves or BE CAUTIOUS NOT TO TOUCH NEW BULB GLASS WITH BARE FINGERS. Oils from your hands an cause bulb to heat unevenly and cause new bulb to explode in the headlight assembly
So with gloved hands open new bulb insert follow steps in reverse to reassemble. Happy Motoring