When it comes to maintaining your 2009 Toyota Highlander, one of the most overlooked yet crucial upgrades is replacing your headlight bulbs. Over time, factory-installed bulbs can dim, reducing visibility and compromising safety. Whether you’re driving on a dark country road or navigating through a rainy night, having bright, reliable headlights is essential. In this blog, we’ll explore everything you need to know about upgrading your 2009 Toyota Highlander headlight bulbs, including options, benefits, and installation tips.
2009 Toyota Highlander Headlight Bulb Size Guide
2009 Toyota Highlander Low Beam and High Beam – Bulb Size: H4/9003
2009 Toyota Highlander Fog Light – Bulb Size: H11
2009 Toyota Highlander Backup / Reverse Lights – Bulb Size: T15/912/921
2009 Toyota Highlander Brake Lights – Bulb Size: 7443/7440
2009 Toyota Highlander Parking Lights – Bulb Size: 194/168/T10
2009 Toyota Highlander Front Side Marker Lights – Bulb Size: 194/168/T10
2009 Toyota Highlander Front Turn Signal Lights – Bulb Size: 7443/7440
2009 Toyota Highlander Rear Side Marker Lights – Bulb Size: 7443/7440
2009 Toyota Highlander Rear Turn Signal Lights – Bulb Size: 7443/7440
2009 Toyota Highlander Tail Lights – Bulb Size: 7443/7440
2009 Toyota Highlander Luggage Compartment Lights – Bulb Size: C5W-31MM
2009 Toyota Highlander Map Light – Bulb Size: 194/168/T10
2009 Toyota Highlander Interior Door Lights – Bulb Size: 194/168/T10
2009 Toyota Highlander Interior Door Lights – Bulb Size: 194/168/T10
2009 Toyota Highlander License Plate – Bulb Size: 194/168/T10
How to Replace Vehicle Toyota Highlander Headlight Bulbs
Replacing the headlight bulbs on a 2009 Toyota Highlander is a straightforward process. Here’s a quick guide:
- Gather Tools: You’ll need a screwdriver and your new bulbs.
- Access the Bulb: Open the hood and locate the back of the headlight assembly. Remove the dust cover.
- Remove the Old Bulb: Unplug the wiring harness and carefully twist the bulb to remove it.
- Install the New Bulb: Insert the new bulb, reconnect the wiring harness, and replace the dust cover.
- Test the Lights: Turn on your headlights to ensure the new bulbs are working properly.
If you’re unsure about the process, consult your vehicle’s manual or seek professional assistance.

Conclusion
Upgrading your Toyota Highlander headlight bulbs is a simple yet impactful way to enhance your driving experience. Whether you opt for halogen, LED, or HID bulbs, you’ll enjoy better visibility, improved safety, and a more modern look for your vehicle. Don’t wait until your current bulbs fail—make the switch today and light up the road ahead!