1Find the back of the headlight
Open the hood and look behind the headlight housing. Make room if the battery or air box is in the way.
FREE REPAIR GUIDE
How to Replace a Headlight Bulb
Change a halogen headlight bulb from under the hood in 10–30 minutes. Bulb types, tips, and what not to touch.
DIFFICULTYEasy
ESTIMATED TIME10–30 min
TOOLSUsually none
POTENTIAL SAVINGS$40–150Labour estimate · varies
Know what you’re replacing.
A headlight out is a ticket waiting to happen. On many cars you can replace a halogen bulb from under the hood in 10–30 minutes. Some cars need the battery, air box or wheel-liner moved for access, and LED or HID headlights are often sealed units that need a shop.
What you’ll need.
Halogen headlight bulb (pair)Check your bulb code (e.g. H11, 9005, H4) in the owner's manual · ~$15–40
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Nitrile glovesKeep skin oil off the glass · ~$8
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A little preparation first.
- Find your bulb code in the owner's manual or on the old bulb.
- Replace both sides — the other will fail soon.
- Lights off and cool.
One step at a time.
2Remove the dust cap
Twist the rubber or plastic cap counter-clockwise if there is one.
3Unplug the connector
Squeeze the tab and pull the connector off the bulb.
4Remove the old bulb
Twist the bulb a quarter turn counter-clockwise and pull it straight out (some use a wire clip).
5Install the new bulb
Don't touch the glass. Insert, twist to lock, plug in, refit the cap and test.
Log in 
Troubleshooting
New bulb doesn't lightCheck the connector is fully seated and the fuse is good.Bulb burned out quicklyThe glass was probably touched, or there's moisture in the housing.
FAQ
Can I upgrade to LED?Only with bulbs legal for your vehicle and housing; poorly aimed LEDs blind other drivers.Why replace both?They wear at the same rate and matching brightness is safer.
General guidance only. Procedures vary by year, engine and trim; if unsure, consult a qualified mechanic or your owner’s manual.