2016 Ford Explorer Bulb Sizes (Headlight, Tail, Fog)

Quick reference

For 2016 Ford Explorer owners, understanding the correct bulb sizes is essential for any lighting maintenance or upgrade project. This guide provides a comprehensive overview of all the common bulb sizes for your vehicle, noting variations between trim levels and OEM options.

OEM Lighting Variations

The 2016 Ford Explorer offered different lighting configurations depending on the trim level. Lower trims typically came equipped with halogen reflector headlights, using an H11 bulb for the low beam and a 9005 bulb for the high beam. Higher trim levels, such as the Limited, Sport, and Platinum, often featured projector-style headlights with High-Intensity Discharge (HID) low beams, which utilize a D3S bulb. These HID systems provide a brighter, whiter light output compared to halogens. It's important to check your specific vehicle's headlight type before purchasing replacement bulbs.

Fog lights across most trims use an H11 halogen bulb. Daytime Running Lights (DRLs) and front turn signals commonly share the same 4157NAK bulb. Rear lighting, including turn signals, brake lights, and tail lights, typically uses a 3157 bulb, while the reverse lights are a 921 bulb. License plate lights are usually 168 bulbs, and side markers (front and rear) are 194 bulbs.

Inside the cabin, the dome and map lights often use 578 and 194 incandescent bulbs, respectively. However, some higher trim levels or optional packages may have come with OEM LED interior lighting, offering a crisper and more modern look.

LED vs halogen upgrade considerations

Upgrading from halogen to LED bulbs is a popular modification for many 2016 Ford Explorer owners due to the improved brightness, longer lifespan, and modern aesthetic that LEDs offer. However, there are several factors to consider before making the switch.

CANBUS Errors

Modern vehicles like the 2016 Ford Explorer utilize a Controller Area Network Bus (CANBUS) system to monitor various electrical components, including lighting. When you replace a halogen bulb with an LED, the lower power draw of the LED can trick the CANBUS system into thinking the bulb is out, leading to "bulb out" warning messages on your dashboard or hyper-flashing turn signals. To prevent these errors, you'll often need to install CANBUS-compatible LED bulbs or use external load resistors. Load resistors mimic the power draw of the OEM halogen bulbs, satisfying the CANBUS system.

Adapters Needed

While many LED bulbs are designed to be "plug-and-play," some applications may require additional adapters. For instance, some LED headlight bulbs might have larger heat sinks that interfere with the dust caps, requiring extended caps, or specific mounting collars to ensure proper fitment and beam pattern. Always consult the product specifications and any vehicle-specific installation guides provided by the LED bulb manufacturer.

Beam Pattern and Glare

When upgrading your headlights to LEDs, especially in reflector housings, it's crucial to choose LED bulbs that accurately mimic the filament placement of your OEM halogen bulbs. Poorly designed LED bulbs can create a scattered beam pattern, reducing your visibility and causing excessive glare for oncoming drivers. Projector housings, especially those designed for HID, are often more forgiving with LED conversions but still require careful selection.

How to replace each bulb

Replacing bulbs on your 2016 Ford Explorer is a relatively straightforward process, though some locations are more accessible than others. Always ensure your vehicle is off and the lights are cool before handling bulbs.

• Low Beam/High Beam: Access to headlight bulbs typically requires opening the hood. For halogen bulbs, you'll usually twist and pull the bulb out from the housing. HID bulbs (D3S) can be more complex and may involve removing an igniter and ballast; consulting your owner's manual or a repair guide is recommended. Always avoid touching the glass of new halogen or HID bulbs.
• Fog Lights: These are often accessed from underneath the front bumper or by removing the wheel well liner. Twist to remove the bulb from its housing.
• DRL/Front Turn Signal: These bulbs are typically found within the same headlight assembly and are accessible from under the hood. Twist the socket to release the bulb.
• Rear Turn Signal, Brake Light, Tail Light, Reverse Light: To access these, you'll usually need to remove the entire tail light assembly. This typically involves unscrewing a few fasteners from the inside of the trunk or tailgate and carefully prying the assembly away from the vehicle. Once the assembly is out, the bulb sockets will twist out.
• License Plate Lights: These are usually accessed by removing a few screws around the light housing on the tailgate or bumper. The bulb socket will twist out.
• Side Markers (Front/Rear): Front side markers are often integrated into the headlight assembly or a separate small housing on the fender, accessible from under the hood or wheel well. Rear side markers can be part of the tail light assembly or a separate small fixture on the bumper, accessed by removing the light housing.
• Dome/Map Lights: Carefully pry off the lens cover with a plastic trim tool to avoid scratching the plastic. The bulbs will then be exposed and can be gently pulled out.

Common lighting issues for this generation

The 2016 Ford Explorer is generally reliable, but like any vehicle, it can experience a few common lighting-related issues specific to its generation.

• Premature Halogen Bulb Failure: Some owners report that the OEM halogen bulbs (especially low beams and fog lights) can have a shorter lifespan than expected. This can be exacerbated by frequent driving on rough roads or voltage fluctuations. Upgrading to higher-quality aftermarket halogens or LEDs can often mitigate this.
• Corrosion in Tail Light Sockets: Over time, moisture can sometimes get into the tail light assemblies, leading to corrosion in the bulb sockets. This can cause intermittent bulb operation or complete failure. Cleaning the contacts with electrical contact cleaner or replacing the affected socket can resolve this.
• DRL/Turn Signal Hyper-Flashing (after LED upgrade): As mentioned previously, if you upgrade your DRLs or turn signals to LEDs without proper CANBUS decoders or load resistors, you will almost certainly experience hyper-flashing (the turn signal blinks much faster than normal), indicating that the system detects a fault.
• HID Ballast/Igniter Failure: For Explorers equipped with OEM HID headlights, the ballast or igniter can fail over time, leading to a flickering headlight, a pinkish hue, or complete failure of the HID bulb. Replacing the ballast or igniter (and often the D3S bulb simultaneously) is usually required.

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