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2018 Hyundai Elantra
2017 - 2018 Hyundai Elantra
Sedan

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How to Replace Mirrors 2017-2020 Hyundai Elantra

How to Replace Mirrors 2017-2020 Hyundai Elantra

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Tools & Fluids

10mm
10mm
Socket
or (3/8")
1/4
1/4
Ratchet
3"
3"
Extension
1/4
1/4
Torque Wrench
Panel
Panel
Removal Tool
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How to Replace Side-View Mirrors on a 2017-2018 Hyundai Elantra (Body: Sedan)

Step-by-step guide with required tools, compatible parts, torque specs, and safety tips for 2017, 2018

How to Replace Side-View Mirrors on a 2017-2018 Hyundai Elantra (Body: Sedan)

Step-by-step guide with required tools, compatible parts, torque specs, and safety tips for 2017, 2018

Orion
Orion

🔧 Elantra - Side View Mirror Assembly Replacement

This procedure replaces the complete driver-side or passenger-side mirror assembly. The mirror is secured behind the triangular interior trim panel, so the main door panel normally stays installed.

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

Assumption: This procedure covers the factory power-adjustable mirror assembly; replacement features and connector must match the original mirror.


⚠️ Safety & Precautions

  • ⚠️ Lower the window before starting so you can support the mirror from both sides of the door.
  • ⚠️ Disconnect the negative battery cable before unplugging the mirror connector.
  • ⚠️ Support the mirror before removing the final nut. It can fall and damage the door or glass.
  • ⚠️ Wear gloves because the mirror housing and door edges can be sharp.
  • ⚠️ Do not pry with a metal screwdriver; it can damage the trim or side-curtain airbag area.

🔧 Required Tools

You'll need the following tools for this repair:

  • 10mm socket
  • 1/4-inch drive ratchet
  • 1/4-inch drive 3-inch extension
  • 1/4-inch drive inch-pound torque wrench
  • Plastic interior trim removal tool set
  • Small plastic pick
  • Magnetic parts tray
  • Work gloves
  • Safety glasses

🔩 Required Parts

HowToo sells all the parts you need for this repair:

  • Power side-view mirror assembly matching the original features - Qty: 1 per damaged side
  • Mirror mounting gasket - Qty: 1 per mirror if not included
  • Mirror mounting nuts - Qty: 3 per mirror if damaged or missing
  • Interior sail-panel retaining clips - Qty: As needed
  • Painted mirror cap - Qty: 1 per mirror if not included or transferred

The mirrors do not have to be replaced in pairs. Match the connector, power adjustment, heating, turn-signal equipment, and blind-spot equipment to the original assembly.


📋 Before You Begin

  • 📋 Park your Elantra on level ground, shift into Park, engage the parking brake, and switch the ignition off.
  • 📋 Lower the window completely before disconnecting the battery.
  • 📋 Open the hood. Use the 10mm socket and ratchet to disconnect the negative battery cable, then position it where it cannot touch the terminal.
  • 📋 Wait at least three minutes before working near the door’s side-curtain airbag area.
  • 📋 Compare the replacement mirror’s electrical connector and mounting studs with the original before disassembly.

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove the Interior Sail Panel

  • The sail panel is the small triangular trim piece inside the door, directly opposite the mirror.
  • Use a plastic interior trim removal tool to carefully pry the panel away from the door, starting at its upper edge.
  • Pull straight inward to release the retaining clips. Do not twist the panel sharply.
  • If a small electrical connector is attached, press its locking tab with the small plastic pick and unplug it.
  • Keep your free hand ready to catch the panel.

Step 2: Disconnect the Mirror Wiring

  • Locate the mirror electrical connector behind the removed sail panel.
  • Press the connector’s locking tab with the small plastic pick and pull the connector apart by its plastic body.
  • Do not pull directly on the wires.
  • Release the wiring harness from any plastic holder using the plastic trim removal tool.

Step 3: Remove the Mirror Mounting Nuts

  • Reach through the open window and hold the mirror housing firmly with one hand.
  • Use the 10mm socket, 3-inch extension, and ratchet to remove the three mirror mounting nuts.
  • Place each nut in the magnetic parts tray so it cannot fall into the door.
  • Keep supporting the mirror after the final nut is removed.

Step 4: Remove the Old Mirror

  • From outside the door, pull the mirror assembly straight away from the mounting surface.
  • Carefully guide the electrical connector and wiring through the door opening.
  • If the mirror sticks, use the plastic trim removal tool to gently separate the foam gasket. Do not lever against the painted door with metal tools.
  • Inspect the mounting surface and remove loose gasket material by hand while wearing work gloves.

Step 5: Prepare the Replacement Mirror

  • Check that the replacement mirror has three correctly positioned mounting studs and an undamaged foam gasket.
  • Compare the electrical connector with the original connector. The shape, locking tab, and terminal count must match.
  • If the replacement requires the original painted cap, use a plastic interior trim removal tool to release the cap tabs carefully and transfer it before installation.
  • Do not install the mirror if the gasket is folded, missing, or damaged. The gasket helps prevent wind noise and water entry.

Step 6: Install the Replacement Mirror

  • Guide the replacement mirror’s connector and wiring through the opening from outside the door.
  • Seat the mirror and gasket flat against the door. Make sure no wiring is trapped beneath the gasket.
  • Hold the mirror in position through the open window.
  • Start all three mounting nuts by hand to prevent cross-threading.
  • Use the 10mm socket and ratchet to tighten the nuts evenly in several passes.
  • Use the 10mm socket and inch-pound torque wrench to tighten each nut to 9 Nm (80 in-lbs).
  • Do not overtighten the nuts; excessive force can crack the mirror base.

Step 7: Connect the Mirror Wiring

  • Push the mirror connector into the door connector by hand until the locking tab clicks.
  • Gently tug the connector bodies to verify they are locked together.
  • Secure the harness in its original holder using your fingers or the plastic trim removal tool.
  • Make sure the wiring cannot interfere with the window mechanism.

Step 8: Reinstall the Sail Panel

  • Inspect the sail-panel clips. Replace any broken clips before installation.
  • If equipped with an attached connector, reconnect it by hand until it clicks.
  • Align the sail-panel clips with their door openings.
  • Press the panel into place using the palm of your hand until every clip is fully seated.
  • Do not strike the panel or press directly against a speaker grille.

Step 9: Reconnect the Battery

  • Place the negative battery cable back over its terminal.
  • Use the 10mm socket and ratchet to snug the terminal nut.
  • Use the 10mm socket and inch-pound torque wrench to tighten the negative terminal nut to 5 Nm (44 in-lbs).
  • Confirm the terminal cannot rotate by hand.

✅ After Repair

  • ✅ Switch the ignition on and operate the mirror through its full up, down, left, and right range.
  • ✅ If equipped, test mirror heating with the rear-window defogger and verify the turn signal or blind-spot indicator operates normally.
  • ✅ Raise and lower the door glass while listening for rubbing or clicking. Stop immediately if the glass contacts wiring.
  • ✅ Verify the sail panel sits flush and the mirror gasket has no visible gaps.
  • ✅ Sit in the normal driving position and adjust the mirror before driving.
  • ✅ Reset the clock and any saved radio settings if they were lost during battery disconnection.
  • ✅ If the automatic window function no longer works, close the window completely and hold the switch upward for approximately three seconds.

💰 DIY vs Shop Cost

Shop Cost: $225-$500 per mirror (parts + labor)

DIY Cost: $70-$250 per mirror (parts only)

You Save: $155-$250 per mirror by doing it yourself!

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


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