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Toyota Prius Engine Wire Harness Can Wear and Short

NHTSA campaign 18V579000 · Reported Sep 5, 2018 · Toyota Motor Engineering & Manufacturing

critical How serious is it? About this label

An electrical short from this wear can increase the risk of a fire. The notice does not tell owners to stop driving.

Key facts

NHTSA campaign number	18V579000
Reported to NHTSA	Sep 5, 2018
Manufacturer	Toyota Motor Engineering & Manufacturing
Part affected	Electrical System:wiring
Vehicles covered	1 model/year combination, model years 2018
Do-not-drive advisory	No
Park-outside advisory	No
Repair	Free at any franchised dealer

What's wrong, in plain English

Toyota is recalling certain Prius vehicles because a section of the engine wire harness that connects to the hybrid Power Control Unit could rub against its cover. Over time, that contact can cause the wire to wear and create an electrical short circuit. Dealers will inspect the wire harness assembly and replace it if any damage is found, and will add a protective sleeve or tape to help prevent this from happening again.

What you should do

1. Check your VIN at nhtsa.gov/recalls to see if your vehicle is included.
2. Contact a Toyota dealer, or call Toyota customer service at 1-888-270-9371.
3. The inspection and any needed repair will be done free of charge.

Where do I find my VIN, and what do I tell the dealer?

Your VIN is the 17-character code on the lower left of the windshield, on your registration and usually on your insurance card. Enter it at nhtsa.gov/recalls to see whether this recall is still open on your car. When you call the dealer, say you have an open safety recall and give them NHTSA campaign number 18V579000. More in how recalls work.

Affected vehicles (1)

2018 Toyota Prius

Who to contact

Toyota — official Toyota recall lookup

Customer service: 1-800-331-4331

Any franchised dealer for the brand can do the repair. Phone numbers are taken from manufacturer sites and recent NHTSA notices; if one has changed, the number in your own recall letter is the one to use.

The bigger picture

Toyota Electrical Recalls Cover Fire Risks, Stalling, and Missing Displays · all 18 Toyota recalls in this area

Other Toyota Prius recalls

Jan 28, 2026Toyota Prius Rear Door May Open While Drivinghigh
Oct 30, 2025Toyota, Lexus and Subaru rearview camera may freezemedium
Jul 23, 2024Toyota accessory weight label may show wrong numberslow
Apr 17, 2024Toyota Prius Rear Doors May Open Unexpectedlyhigh
Sep 22, 2021Toyota Prius Software Error May Cause Power Losshigh
Dec 11, 2019Toyota Prius Instrument Display May Go Blankmedium

All 9 Prius recalls

Official notice

Component: ELECTRICAL SYSTEM:WIRING
Summary: Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2016-2018 Toyota Prius vehicles. A portion of the engine wire harness connected to the hybrid Power Control Unit (PCU), could contact the cover at this connection and wear, causing an electrical short circuit.
Safety risk: An electrical short can increase the risk of a fire.
Remedy: Toyota will notify owners, and dealers will inspect the engine wire harness assembly and replace it if damage is found. A protective sleeve or protective tape will be included to prevent any future damage. These repairs will be performed free of charge. The recall began October 30, 2018. Owners may contact Toyota customer service at 1-888-270-9371. Toyota's number for this recall is J0T.

Verify your specific vehicle by VIN at nhtsa.gov. Recall repairs are free of charge by law.