How to change/replace Full LED Headlight Assembly Toyota Prius 2023?

The 2023 Prius (5th Gen XW60) requires full bumper removal, triple-beam LED programming, and auto-leveling recalibration. Here’s a real workshop-grade guide:

2023 TOYOTA PRIUS FULL LED HEADLIGHT ASSEMBLY REPLACEMENT
Applies to: 2023+ Prius LE, XLE, Limited, Prime SE/XSE/XSE Premium – 5th Gen

1. Why That Other Guide Fails for 2023

– 2023 Prius has no bulbs to change — it’s a sealed triple projector LED unit
– Headlight is held by 4 hidden bolts behind bumper + fender, not accessible from top
– Has auto-leveling sensor + CANBUS driver — if you don’t disconnect 12V, you can fry ECU
– Needs aiming initialization with Toyota Techstream after install

2. Parts & Tools Needed

Parts:
– Full Assembly: Toyota OEM Part # 81110-47E50 (Left) / 81130-47E50 (Right) for LE/XLE, or 81110-47F10 / 81130-47F10 for Limited with adaptive cornering
– Aftermarket option: TYC 20-9740 / Eagle Eyes TY1237-B001L
– Hardware Kit: Bumper clips 52161-02020 (buy 10, you will break them), fender liner clips 90467-07215
– Dielectric grease, clear RTV for sealing if aftermarket

Tools:
– 10mm socket (primary), 8mm socket, plastic trim removal kit
– Ratchet with 12″ extension + universal joint
– Torque wrench (55 in-lbs for headlight bolts)
– OBD2 scanner with Techstream or Autel to clear DTC B2416

3. Critical Safety Protocols

1. Hybrid System OFF: Park, Power OFF, wait 5 mins. Disconnect 12V negative in trunk (right side). This disables LED driver which runs 35V boost.
2. Do NOT touch orange HV cables near inverter.
3. Never pull headlight harness while 12V is connected — causes “Headlamp System Malfunction” that only dealer can reset.
4. Wear gloves — new LED lens scratches instantly.

4. Step 1: Remove Front Bumper (MANDATORY for 2023)

1. Open hood, remove 8 plastic clips on top radiator cover (pry center up)
2. Remove 2x 10mm bolts under that cover at top of grille
3. Turn wheels full left/right to access fender liner: Remove 3 screws + 2 clips per side where liner meets bumper
4. Underneath: Remove 8x 8mm screws + 4x clips from under-tray
5. Unclip bumper: Pull firmly from fender edge — 3 snap clips each side. Have second person hold. It’s light but long.
6. Disconnect fog light + temp sensor connectors before fully pulling away.

5. Step 2: Remove Old LED Assembly

1. Now you see 4 bolts: 2 on top (10mm), 1 side near fender (10mm), 1 bottom hidden near crash bar (10mm with extension)
2. Pull assembly slightly forward, disconnect 3 connectors: Main 16-pin power, auto-leveling 2-pin, side marker
3. Press tab and pull — don’t yank wires. If Limited trim, also disconnect adaptive motor connector.
4. Lift out assembly straight — there are 2 alignment pins at bottom.

6. Step 3: Install New LED Assembly

1. Transfer any rubber grommets or lower guide from old to new
2. Connect harnesses BEFORE mounting — listen for click
3. Seat alignment pins first, then install 4 bolts hand-tight
4. Torque to 55 in-lbs (6.2 Nm) — plastic housing cracks if over-torqued
5. Apply thin bead of dielectric grease on connectors

7. Step 4: Reassembly & Initialization

1. Reinstall bumper reverse order — start with fender clips, ensure gap is even <4mm
2. Reconnect 12V battery
3. Power ON: Check low beam, high beam, DRL, sequential turn signal
4. Aiming Reset (Critical):
– Park 25ft from wall on level ground
– In car: Headlight leveling must be initialized — With Techstream: Chassis > AFS > Utility > Height Sensor Calibration
– Without scanner: Turn lights on, wait 10 sec, you will hear leveling motors whir — that is auto-calibrating
5. Adjust vertical aim: 10mm screw on top of assembly — clockwise = up

8. Final Checks & Pro Tips

– If you get warning “Headlight System Malfunction Visit Dealer” — you didn’t disconnect 12V. Clear codes B2416/B2419 with scanner
– Aftermarket assemblies often fog — add extra butyl sealant around edges before install
– 2023 Prius LE vs Limited are NOT interchangeable — Limited has adaptive, LE does not — VIN check required
– Torque for bumper: Top bolts 70 in-lbs, under-tray 45 in-lbs

Starting with the 2023 model year (5th generation), the Toyota Prius uses sealed, factory-integrated full LED headlight assemblies.

Unlike older Prius models, there are no individual bulbs (like H11 or 9005) to unscrew or swap out. If a headlight goes out on a 2023 Prius, the entire headlight housing assembly must be replaced.

Important Notice: Full Assembly Replacement Required

Do not attempt to twist or force internal components out of the headlight housing. The 2023 Prius high/low beams are non-serviceable LED diodes soldered directly onto circuit boards inside the sealed unit.

Parts & Tools Needed

Parts Involved:
- Replacement Full LED Headlight Assembly (Left/Driver Side: OEM Part #81070-47B00 or Right/Passenger Side: OEM Part #81140-47B00).
Tools Required:
- 10mm socket and ratchet wrench
- Flat-head screwdriver or trim clip removal tool
- Painter’s tape (to protect painted bumper edges)
- Work gloves and safety glasses

Step-by-Step Replacement Instructions

1.Prepare the Vehicle & Safety:5 min.

Park on a flat surface, engage the parking brake, and turn the ignition off completely. Pop the hood and disconnect the negative terminal on the 12V battery to prevent electrical short circuits. Apply painter’s tape along the bumper seams surrounding the headlight housing to protect the paint from scratches.

2.Remove the Front Engine Cover & Clips:10 min.

Use a trim clip removal tool or flat-head screwdriver to gently pop up and remove the plastic push-pins securing the top engine bay cover / radiator support cover. Lift the plastic cover off and set it aside.

3.Unfasten the Front Bumper Cover:20 min.

To extract the headlight assembly, the front bumper cover must be partially unbolted and pulled forward:

Remove the 10mm bolts along the underside of the front bumper splash shield.
Remove the plastic push-pins inside the front wheel arch liner on the side you are replacing.
Carefully pull the edge of the bumper cover outward from the fender bracket until the tabs snap free.

Verification: The bumper cover should hang forward enough on the side you’re servicing to reveal the lower mounting tabs of the headlight housing.

4.Unbolt the Headlight Housing:10 min.

Locate the top and side mounting bolts securing the headlight assembly to the frame (typically three 10mm bolts and one alignment clip). Remove these bolts using your 10mm socket.

5.Disconnect the Main Wiring Harness:5 min.

Wiggle the headlight housing slightly forward. Depress the release tab on the primary electrical connector plug at the back of the housing and pull it straight off. Lift the old headlight assembly completely out of the car.

6.Install New Assembly & Verify:15 min.

Line up the new LED headlight assembly and plug the main wiring harness firmly into the socket until it clicks.
Reconnect the 12V battery temporarily and switch on the lights to verify that the high beam, low beam, and daytime running lights (DRL) function properly.
Re-mount the assembly with the 10mm bolts, snap the bumper cover back into position, and reinstall all trim clips and lower splash shield bolts.

Verification: Turn on the headlights and cycle between low and high beams to ensure full functionality before driving.