2020 Subaru Outback Bulb Sizes & Replacement Guide

Looking to replace a bulb on your 2020 Subaru Outback? Whether you're upgrading to LEDs or just need to swap out a burnt-out halogen, this guide has you covered with all the essential bulb sizes and replacement tips.

Quick reference

OEM Halogen vs. LED Differences

The 2020 Subaru Outback offered significant lighting variations depending on the trim level. Lower trims typically came equipped with halogen bulbs for the low beams, high beams, fog lights, and daytime running lights (DRLs). Higher trims, such as the Limited and Touring, often featured full LED headlights, fog lights, and integrated LED DRLs. These LED systems are designed as sealed units and are generally not user-serviceable for individual bulb replacement. The brake lights and tail lights on most 2020 Outback models were LED from the factory, integrated into the tail light assembly.

LED vs. Halogen Upgrade Considerations

Upgrading your halogen bulbs to LEDs can provide a brighter, whiter light and a more modern look. However, there are a few important considerations for your 2020 Outback:

• CANBUS Errors: Modern vehicles like the Outback use a CANBUS (Controller Area Network Bus) system to monitor electrical components. When you swap a halogen bulb for an LED, the lower power draw of the LED can trick the CANBUS system into thinking the bulb is out, leading to "bulb out" warnings on your dashboard. To prevent this, you'll need LED bulbs with built-in CANBUS decoders or external load resistors.
• Adapters and Fitment: Some aftermarket LED bulbs may be physically larger than their halogen counterparts, requiring more space behind the headlight housing. Always check for proper clearance before purchasing. Additionally, certain LED kits might require specific adapters or wiring harnesses to connect seamlessly with your Outback's electrical system.
• Beam Pattern: Not all LED bulbs are created equal. Poorly designed LED bulbs can create a scattered beam pattern, leading to reduced visibility for you and glare for oncoming drivers. Look for LED bulbs designed to mimic the filament placement of the original halogen bulbs to ensure a proper beam pattern, especially for headlights and fog lights.

How to Replace Each Bulb

Replacing bulbs on your 2020 Outback is generally a straightforward process, but some locations are trickier than others. Always consult your owner's manual for specific instructions and safety precautions.

• Low Beam/High Beam Headlights: Access is usually from behind the headlight assembly in the engine bay. For halogen bulbs, twist to unlock the bulb, unplug the connector, and replace. For LED integrated units, replacement is not typically a DIY task.
• Fog Lights: Often accessed from underneath the front bumper or by removing fender liner clips. Twist to unlock and replace.
• DRL (Halogen): Similar to low beam access. Twist socket to remove bulb.
• Front Turn Signal: Accessed from behind the headlight assembly. Twist socket to remove bulb.
• Rear Turn Signal/Reverse Light: Typically accessed by removing the tail light assembly. This usually involves removing a couple of retaining screws and carefully pulling the assembly straight out. Once out, twist the bulb sockets to remove.
• Brake/Tail Lights (LED): Generally integrated into the tail light assembly. If a segment fails, the entire assembly may need replacement, which is best left to a professional.
• License Plate Lights: Usually involves removing a couple of screws from the clear housing on the tailgate. Pop out the old bulb and insert the new one.
• Front Side Marker: Found within the headlight assembly. Twist socket to remove bulb.
• Rear Side Marker (LED): Integrated into the LED tail light assembly, not user-serviceable.
• Dome/Map Lights: Carefully pry off the clear lens cover with a plastic trim tool. The bulbs are usually push-in type or festoon bulbs that clip into place.

Common Lighting Issues for this Generation

The 2020 Subaru Outback, being a relatively new model, doesn't have a long history of widespread lighting issues. However, some owners have reported:

• "Bulb Out" Warnings after LED Upgrades: As mentioned, this is a common occurrence when upgrading halogen bulbs to LEDs without proper CANBUS decoders.
• Condensation in Headlight/Tail Light Assemblies: While not a "bulb" issue, some owners have reported condensation inside the sealed light units. If this occurs, it may indicate a seal failure, and the entire assembly may need to be replaced.
• Intermittent Operation of Factory LED Components: Rarely, an OEM LED component (like a DRL strip or a segment of the tail light) might flicker or fail. This typically requires replacing the entire LED assembly.

If you experience any persistent lighting problems or are unsure about a replacement, don't hesitate to seek professional help.

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