Time: 5-10 min

Difficulty: Easy

Cost: $10-20 (bulb type/qt)

Bulbs fail from heat, vibration, and damage. Routine maintenance isn't necessary, but sometimes a good bulb will be replaced at the same time as a bad bulb because access to the location can be difficult. 

Bulbs are also replaced to increase output, change color, or convert to LED.

Do not touch the new bulb with your fingers. The oils from your hands will create hot spots on the glass that cause premature bulb failure. Use latex gloves, or put your hand inside of a plastic sack when handling new bulbs.

Watch the video below to see how the bulb was replaced on a 2013-2019 Toyota Avalon/Camry. It's the same process for high and low beams on either side.