How Hot Do Headlight and Taillight Bulbs Get?

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All light bulbs get hot when in use – it’s the nature of how they work. With the exception of LEDs and fluorescent bulbs, light bulbs work on the principle of resistance. Electric current is directed through the bulb. The filament is designed to resist the flow of electrons. This resistance creates heat, and the filament glows. Different types of filaments (and different gases in the bulb itself) glow more brightly than others. How hot do your headlight and taillight bulbs get?

The question of type

There’s no single answer here. It greatly depends on the type of bulb you’re using. A standard halogen headlight bulb can reach several hundred degrees during operation, and the headlight lens itself might be over 100 degrees. HID lights can reach very, very high temperatures (far in excess of what a halogen can achieve). Xenon plasma bulbs also reach immensely high temperatures.

Taillight bulbs are a bit different from headlights. The lights don’t need to be as bright, and the red lens helps brighten the light produced by the filament. The bulbs work on the same principle, but different wattages, filaments and gasses are used here. However, taillight bulbs can still get quite warm during operation. They can be uncomfortable to touch after being used, but they don’t reach the 100 – 200 degree temperature range common for even low-end headlights.

Caution

If you’ll be replacing your headlight or taillight bulbs, exercise caution. If the lights have been in use, let them cool completely before attempting to replace the bulb, or a serious burn could result.


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Rigoberto

9 years of experience
706 reviews
Rigoberto
9 years of experience
Chevrolet Equinox - Brake Pads Replacement (Rear) - Niles, Illinois
Rigo was great! He got there early, finished the job early, left everything clean. He changed my rear pads and rotors. The original quoted time was 90 minutes, he was done in about 60. He knows what he is doing and I am recommending him to all my friends and coworkers.
Mercedes-Benz C250 - Brake Pads Replacement (Front, Rear) - Chicago, Illinois
Rigo is a maverick hands down. Don’t take your car for work elsewhere. Especially great at Mercedes—this guy knows his profession! I will be using him for everything related to my car going forward.

Arturo

25 years of experience
35 reviews
Arturo
25 years of experience
Kia Forte - Brake Pads Replacement (Front) - San Diego, California
ARTURO is great! very professional , fast, replaced my front brake pads and oil an filter change. everything now works and works well. Brakes have much improved stopping power and engine is smooth and quiet.Arturo is also kind and thoughtful. "Your mechanic" is very fortunate to have Arturo Lopez represent your company. I enthusiastically recommend him and "Your mechanic> as a fine operation Best regards to the Team Peter Marto
Nissan Maxima - Brake Pads Replacement (Front, Rear) - San Diego, California
Arturo was prompt and completed my brake repair, including new rotors in a very efficient manner. I am very pleased with the quality of the work and the parts and will definitely look to have him service our other car in the near future.

Scott

32 years of experience
345 reviews
Scott
32 years of experience
Lexus IS250 - Brake Pads Replacement (Rear) - Denver, Colorado
Always on time, speedy, professional, and pleasant to interact with. The work is always consistent and we'll done. I can't reccomend Scott highly enough!

Michael

10 years of experience
15 reviews
Michael
10 years of experience
Nissan Sentra - Brake Pads Replacement (Front) - Conyers, Georgia
He was promptly on time and got the job done efficiently in a timely manner. I really appreciate the rapid respone on getting the job done! I would most definitely use this service again.

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