The inner tail light on a 2016 Toyota Highlander typically uses a 3157 dual-filament bulb; this is the common size for the inner rear lamp in most North American 2014–2016 Highlanders. Always verify by checking your owner's manual or inspecting the bulb in your vehicle, as regional trims or LED packages can vary.
Overview of the bulb size for the Highlander
The inner tail light is part of the rear lamp assembly and handles both running (tail) and braking/turn signals. The 3157 dual-filament bulb is designed to operate in that dual-function role in the Highlander’s inner lamp for many markets. If your Highlander uses LED tail lights or a regional variant, the bulb may not apply.
North American models and common variants
For most 2014–2016 Highlanders sold in North America, the inner tail light uses a 3157 dual-filament bulb; some markets or trims may differ slightly in the exact base variant (3157 vs. 3157A), or may rely on an LED assembly.
Note: The backup light in the same assembly is usually a separate bulb (often 921 or 194), not a 3157.
How to confirm the exact bulb in your Highlander
Builds and options vary by market and trim, so follow these checks to confirm the correct bulb size before purchasing or swapping.
Before you begin, ensure you have the right safety precautions and access to the tail light assembly.
- Consult the owner's manual for the bulb size listing for the inner tail light in the rear lamp assembly.
- Remove the tail light access cover or the socket to inspect the bulb; check the base type and the number of filaments or look for the bulb part number stamped on the base.
- Compare the bulb to a known 3157 dual-filament bulb to verify fit and functionality (two circuits: tail and brake/turn).
- If in doubt, bring the old bulb or a photo to a parts store or check Toyota's official parts portal for your VIN and region.
Following these steps helps ensure you purchase the correct bulb and maintain proper lighting performance on the Highlander.
Related bulbs you might encounter
Beyond the 3157, a few related bulb sizes and variants may appear in rear lighting configurations, depending on trim or regional spec.
- 3157: Dual-filament bulb widely used for tail and brake/turn functions in the Highlander's inner tail light.
- 3157A: A variant sometimes used in certain markets; check base compatibility for your vehicle.
- 7443/7440: Other dual-function rear bulbs used in some regions; verify the socket and base before swapping.
- 921 (also labeled as 194): Common backup/reverse light bulbs used in the same area but separate from the inner tail light bulb.
In short, the standard inner tail light bulb for a 2016 Highlander is typically the 3157 dual-filament type, with verification recommended for your exact build.
Summary
Summary: The inner tail light on most 2016 Toyota Highlanders uses a 3157 dual-filament bulb, delivering both running and braking/turn signaling. Confirm with the owner's manual or by inspecting the bulb in your specific vehicle, as variations can occur across markets and trims. If you encounter LED lighting or regional differences, consult Toyota's service information or a trusted parts specialist to avoid incorrect replacements.