What Size Bulbs Does a 2006 Toyota Highlander Use?
Correct headlight, fog light, and tail light bulb sizes. Sourced from OEM catalog data.
Installation Difficulty
Easy (Plug and Play)
Est. Replacement Cost
$15 - $40 (Halogen) / $30+ (LED)
What Lighting System Does the 2006 Toyota Highlander Have?
The 2006 Toyota Highlander features an extensive lighting system with 13 bulb positions. It uses halogen technology with 9006 LED low beams and 9005 LED high beams in a dual-bulb configuration. The Highlander has been available from 2002 to 2019, and the 2006 model falls in the early-generation years.
Can You Put LED Bulbs in a 2006 Toyota Highlander?
To upgrade the 2006 Toyota Highlander headlights to LED, you will need a 9006 LED LED kit for the low beams and a 9005 LED LED kit for the high beams. Start with the low beams since they are used most often and have the biggest impact on nighttime visibility. For the fog lights, a 9006 LED LED bulb provides a clean white output that pairs well with LED headlights.
How to Replace Bulbs on a 2006 Toyota Highlander
The 9006 bulb uses a push-and-twist L-shaped bayonet lock. To remove the old bulb, disconnect the wiring harness first, then twist the bulb counter-clockwise and pull it out. Older model years like the 2006 Highlander typically offer easy access to the headlight bulbs from behind the headlight assembly under the hood. Most owners can complete the swap in under 10 minutes per side. When installing the new bulb, avoid touching the glass with bare fingers. Skin oils create hot spots that shorten bulb life. Wear clean gloves or handle the bulb by its plastic base only. The fog lights are accessed from underneath the front bumper. You may need to remove a few plastic clips or screws from the fender liner to reach the 9006 LED fog light socket.
Full Upgrade Bundle
Upgrade All 13 Positions at Once
2006 Toyota Highlander Complete Bulb Size Chart
| Position | Bulb Size | Shop |
|---|---|---|
Low Beam | 9006 LED | Buy 9006 LED |
High Beam | 9005 LED | Buy 9005 LED |
Fog Light | 9006 LED | Buy 9006 LED |
Brake Light | 921 LED | Buy 921 LED |
Side Marker | 168 LED | Buy 168 LED |
Turn Signal Front | 7528 LED | Buy 7528 LED |
Turn Signal Rear | 7440NA LED | Buy 7440NA LED |
Reverse Light | 921 | Buy 921 |
Dome Light | DE3175 | Buy DE3175 |
License Plate | 168 | Buy 168 |
Map Light | 168 | Buy 168 |
Parking Light | 7528 | Buy 7528 |
Trunk Light | LED Light | Buy LED Light |
Want to upgrade everything at once?
Shop Complete LED Kit for 2006 Toyota HighlanderHow Long Do 2006 Toyota Highlander Headlight Bulbs Last?
Standard halogen headlights on the 2006 Toyota Highlander have an expected lifespan of 500 to 1,000 hours, which works out to roughly 2 to 3 years of normal use. Signs of a failing halogen bulb include noticeably dimmer output, a yellowish tint compared to the other headlight, or intermittent flickering. At 20 years old, the original bulbs on your Highlander are likely overdue for replacement. Even if they still illuminate, reduced brightness significantly impacts nighttime safety. When one headlight burns out, replace both sides at the same time. Bulbs from the same batch age at similar rates, and mismatched brightness is distracting to oncoming drivers.
What Bulbs Are Compatible with the 2006 Toyota Highlander?
The 9006 low beam bulb on the 2006 Toyota Highlander is cross-compatible with HB4 bulbs. These share the same physical base and electrical connection, so they will fit the socket. However, 9006 is the recommended size because it is optimized for the wattage and beam pattern designed into your headlight housing. For the high beams, the 9005 is interchangeable with HB3. Using the wrong bulb size can cause improper beam patterns that reduce your visibility and blind other drivers. It can also cause overheating inside the headlight housing, potentially warping the plastic lens or reflector. Always verify the bulb number before purchasing.
2006 Toyota Highlander Headlight FAQ
Did Toyota Highlander Bulb Sizes Change Over the Years?
Over its production run from 2002 to 2019, the Toyota Highlander has seen bulb size changes in the Low Beam, High Beam and Fog Light positions. The 2006 model uses the earlier bulb specification that was in place before the change around 2017. Always verify the exact bulb size for your specific 2006 model year using the chart above, as using the wrong size can result in poor fitment or reduced light output.
Other Highlander Years
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Other Vehicles That Use 9006 LED Bulbs
These vehicles from other makes also use a 9006 LED low beam bulb: