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2017 Subaru Outback
2015 - 2018 Subaru Outback
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  • Guides
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  • How to Replace Both Headlight Bulbs on a 2015-2018 Subaru Outback
2017 Subaru Outback Headlight Bulb Replacement

2017 Subaru Outback Headlight Bulb Replacement

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10mm
10mm
Wrench
or (3/8")
Trim
Trim
Tool
Needle Nose
Needle Nose
Pliers
Safety
Safety
Glasses
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How to Replace Both Headlight Bulbs on a 2015-2018 Subaru Outback

Step-by-step low beam bulb replacement with tools, safety tips, and testing advice

How to Replace Both Headlight Bulbs on a 2015-2018 Subaru Outback

Step-by-step low beam bulb replacement with tools, safety tips, and testing advice for 2015, 2016, 2017, 2018

Orion
Orion

🔧 Headlight Bulbs - Replacement

Assumption: This guide covers the low beam headlight bulbs. On your Outback, the low beams are typically the bulbs people mean when they say “headlight bulbs.”

Replacing both bulbs is a straightforward job, but access is tight and you’ll work near hot engine parts. It’s best to replace both sides together so the light output stays even.

Difficulty Level: Beginner | Estimated Time: 0.5-1 hour


⚠️ Safety & Precautions

  • Turn the headlights off and let the bulbs cool before touching anything.
  • Do not touch the glass on halogen bulbs with bare fingers. Oil from skin can shorten bulb life.
  • Work with the engine off and the key away from the vehicle.
  • If you want extra safety, disconnect the negative battery terminal with a 10mm wrench.
  • Be gentle with the bulb connector and headlamp housing clips.

🔧 Required Tools

You'll need the following tools for this repair:

  • 10mm wrench
  • Flathead trim tool
  • Needle-nose pliers
  • Safety glasses
  • Mechanic gloves

🔩 Required Parts

HowToo sells all the parts you need for this repair:

  • Low beam headlight bulb - Qty: 2

📋 Before You Begin

  • Park on level ground and set the parking brake.
  • Turn the headlight switch off.
  • Open the hood and support it fully.
  • Let the bulbs and headlamp area cool if the lights were just used.

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open the hood and locate the rear of each headlamp

  • Open the hood and find the back side of each headlight assembly.
  • You will see a dust cover or access cap behind each bulb.
  • Take a quick photo before removal.

Step 2: Remove the access cover

  • Use your hands first to twist or pull off the rear access cover on each headlamp.
  • If the cover is tight, use a flathead trim tool gently to start it.
  • Set the covers aside clean and dry.

Step 3: Unplug the old bulb

  • Press the release tab and unplug the electrical connector from the bulb.
  • If the connector is stubborn, use needle-nose pliers carefully on the plug body, not the wires.

Step 4: Remove the old bulb

  • Rotate the bulb counterclockwise by hand and pull it out of the housing.
  • Do not force it. If it resists, make sure the connector is fully removed first.

Step 5: Install the new bulb

  • Put on mechanic gloves before handling the new bulb.
  • Insert the new bulb into the socket and rotate it clockwise until it seats firmly.
  • Reconnect the electrical connector until it clicks in place.
  • Match the tab shape before twisting.

Step 6: Reinstall the access cover

  • Reinstall the rear dust cover or access cap by hand.
  • Make sure it is fully seated so moisture cannot enter the headlamp.

Step 7: Repeat on the other side

  • Do the same steps on the second headlight bulb.
  • Use the same method so both sides are installed evenly.

Step 8: Test the headlights

  • Turn the headlights on and check both low beams.
  • Make sure both lights are bright, even, and secure.

✅ After Repair

  • Check that the headlight warning light is off.
  • Verify both beams work on low and high settings if applicable.
  • Inspect for a loose cover or any moisture inside the lamp.
  • If one side does not light, recheck the bulb connector and seating.

💰 DIY vs Shop Cost

Shop Cost: $180-$320 (parts + labor)

DIY Cost: $40-$120 (parts only)

You Save: $140-$200 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.5-1 hour.


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