2016 Toyota Tundra Bulb Sizes

Quick Reference

The 2016 Toyota Tundra offers a robust and reliable platform, and understanding its lighting system is key to proper maintenance and potential upgrades. This guide details the various bulb sizes and types found in the 2016 Tundra, noting common variations and providing essential tips for replacement and upgrades.

For the low beam headlights, most 2016 Tundra models with standard halogen reflectors or projector-style housings utilize an H11 bulb. It's important to confirm your specific headlight type before purchasing replacements, though H11 is the prevalent size. The high beam universally uses a 9005 bulb across all trims. Fog lights, when present, commonly use an H16 bulb on many trims, but some may not have dedicated fog lights or might use a different size depending on the specific package. Daytime Running Lights (DRL) often share functionality with the high beams (at a reduced voltage) or the parking lights; there isn't a separate dedicated DRL bulb for many Tundra trims.

Front turn signals are typically 4157NAK bulbs, which are amber in color, while the rear turn signals, brake lights, and tail lights often share the 3157 bulb. This dual-filament bulb provides both the dimmer tail light function and the brighter brake/turn signal function. The reverse lights employ a 921 bulb. For smaller exterior lights, the license plate lights, front side markers, and rear side markers all commonly use 168 bulbs.

Inside the cabin, the dome light typically uses a DE3175 festoon-style bulb, and the map lights often use 168 bulbs, similar to the exterior markers. It's worth noting that all OEM bulbs listed above are incandescent or halogen unless specified otherwise.

LED vs Halogen Upgrade Considerations

Upgrading from the stock halogen or incandescent bulbs to LEDs is a popular modification for 2016 Tundra owners looking for brighter, more efficient lighting. However, there are several factors to consider before making the switch:

• CANBUS Errors: Modern vehicles, including the Tundra, use a CANBUS (Controller Area Network Bus) system to monitor various electrical components, including lighting. LED bulbs draw significantly less power than their incandescent counterparts, which can trick the CANBUS system into thinking a bulb is out. This often results in "bulb-out" warning messages on the dashboard or hyper-flashing turn signals. To prevent these issues, you'll typically need to install CANBUS-compatible LED bulbs or use load resistors (also known as decoders) wired in parallel with the LED bulbs. Load resistors simulate the electrical load of a halogen bulb, satisfying the CANBUS system.
• Adapters and Fitment: While many LED bulbs are designed to be "plug-and-play," some larger LED bulbs, especially those with integrated cooling fans, might require minor modifications to the headlight housing dust caps or present clearance issues. Always check the dimensions of the LED bulb against the available space in your Tundra's light housing. For specific applications like low beams, ensure the LED bulb has a proper beam pattern to avoid blinding oncoming traffic. Projector headlights generally handle LED conversions better than reflector housings in terms of beam pattern integrity.
• Color Temperature: Halogen bulbs typically emit a warm, yellowish light (around 3200K). LEDs come in a wide range of color temperatures, most commonly 5000K to 6000K, which is a whiter light. Consider if the brighter, whiter light is aesthetically pleasing to you and if it improves visibility in all conditions.

How to Replace Each Bulb

Replacing bulbs on your 2016 Tundra is a relatively straightforward process for most locations. Always ensure the vehicle