Electrical & battery
How to Replace a Headlight Bulb Yourself (Halogen, HID, LED)
Headlight bulb replacement step by step, differences between bulb types, why you replace both sides, and US pricing.
The short version
US pricing: standard halogen bulbs $12–$35 a pair, performance bulbs (Sylvania SilverStar, Philips X-tremeVision) $30–$60 a pair, an OEM HID D2S bulb $60–$150 each, a complete LED…
- 5 symptoms you can check yourself
- 5 diagnosis steps in order
- 4 FAQs answered directly
- Last editorial review: 2026-09-10 · 7 min read
Overview
Replacing a halogen headlight bulb takes 10–20 minutes on most cars, and up to an hour on vehicles requiring bumper or battery box removal for access. The golden rule: never touch a halogen bulb's glass with bare fingers — skin oil creates a hot spot that fails it early. HID and LED systems have entirely different precautions.
Key takeaways
- One headlight out or visibly dimmer than the other.
- Normal life: halogen 500–1,000 hours, HID 2,000–3,000, LED 15,000–30,000.
- Identify the correct bulb number (H11, 9005, H7, D2S…) from the manual or a store catalogue before buying.
- The second bulb has the same hours on it and will fail soon, and a mismatch in colour and brightness between old and new distracts the eye and reduces effective road visibility.
Symptoms
- One headlight out or visibly dimmer than the other.
- A light that flickers or changes brightness while driving.
- A yellowed, faded beam from a bulb that used to be white (end of halogen life).
- A "Bulb out" message or lighting fault on the display.
- Moisture collecting inside the headlight housing.
Likely causes
- Normal life: halogen 500–1,000 hours, HID 2,000–3,000, LED 15,000–30,000.
- Vibration on rough roads shortening filament life.
- Moisture inside the housing corroding the base and connector.
- A corroded or melted socket from excess heat.
- A failed HID ballast or LED driver module.
Diagnosis & repair steps
- Identify the correct bulb number (H11, 9005, H7, D2S…) from the manual or a store catalogue before buying.
- Disconnect the battery negative if the system is HID — ballast voltage reaches 20,000 volts and is dangerous.
- Open the hood, remove the plastic cover behind the headlight housing, unplug the connector, then rotate the bulb base a quarter turn to release it.
- Remove the old bulb and install the new one wearing a clean glove or holding a tissue — never touch halogen glass with skin.
- Reseal the connector and cover firmly (moisture kills a new bulb), then test low beam, high beam and turn signal, and check aim against a wall from 25 feet.
Expected cost
US pricing: standard halogen bulbs $12–$35 a pair, performance bulbs (Sylvania SilverStar, Philips X-tremeVision) $30–$60 a pair, an OEM HID D2S bulb $60–$150 each, a complete LED unit $150–$600. Shops charge $40–$120 for halogen and $120–$300 where the bumper must come off; dealers $90–$350. DIY saves $30–$200 in half an hour.
Figures are a guidance range calculated with a published method — read the methodology.
Run your own estimateHow to prevent it
Replace both bulbs together so colour and output match, keep the rear housing caps sealed, and restore a yellowed plastic lens with a $20–$30 polishing kit to recover about 40% of output.
FAQ
Why replace both bulbs together?
The second bulb has the same hours on it and will fail soon, and a mismatch in colour and brightness between old and new distracts the eye and reduces effective road visibility.
Can I fit LEDs in place of halogens?
Retrofit kits do light up, but the reflector is designed around the halogen filament position, so the beam scatters and glares at oncoming drivers. Many states prohibit them on public roads, and usable light on the road often gets worse, not better.
My new bulb died within weeks — why?
Common causes: touching the glass, moisture in the housing, or a corroded socket creating resistance and heat. Inspect the socket and replace it if it is browned or melted ($15–$40).
The bulb is good but there is no light — what next?
Check the fuse and relay first ($1–$20), then the housing ground. A lighting module or wiring fault is less common but needs a $90–$170 shop diagnosis.
DriveMet review
US pricing: standard halogen bulbs $12–$35 a pair, performance bulbs (Sylvania SilverStar, Philips X-tremeVision) $30–$60 a pair, an OEM HID D2S bulb $60–$150 each, a complete LED unit $150–$600. Replace both bulbs together so colour and output match, keep the rear housing caps sealed, and restore a yellowed plastic lens with a $20–$30 polishing kit to recover about 40% of output.
What we verified
- Cross-checked 5 warning signs against 5 likely causes before publishing.
- Reviewed 5 repair steps and confirmed the order a shop would follow.
- Compared the cost range with our published methodology and refreshed it on 2026-09-10.
- Answered 4 questions people actually search for on this topic.
Reviewed by the DriveMet editorial team on 2026-09-10 under our editorial policy. This is an editorial review of the page, not visitor ratings.
Related tools
Apply what you just read to your own car with your own numbers.
Reference sources
- NHTSA vPIC — vehicle specifications and manufacturer recalls
- EPA fueleconomy.gov — reference fuel-economy figures
- SAE J1979 standard for generic (Pxxxx) fault-code definitions
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