2004 Toyota Prius Electrical System Problems

NHTSA component category: ELECTRICAL SYSTEM · data through 07/14/2026

153Electrical System complaints

25.1%Of all 610 complaints

#2Most-reported category

Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.

How electrical system ranks on this vehicle

EXTERIOR LIGHTING164 · 26.9%

ELECTRICAL SYSTEM153 · 25.1%

VEHICLE SPEED CONTROL48 · 7.9%

ENGINE AND ENGINE COOLING45 · 7.4%

ENGINE AND ENGINE COOLING:ENGINE29 · 4.8%

Share of the 610 complaints citing each category; one complaint can cite several. Full breakdown on the 2004 Toyota Prius overview page.

What owners report

“DT: WHILE DRIVING AT A STEADY PACE, THE VEHICLE STALLED.”NHTSA complaint 10124826 — filed 07/15/2005

“DT: OWN 2004 TOYOTA PRIUS AND ON 6 DIFFERENT OCCASIONS WHILE DRIVING IN THE CITY, THE ENGINE HAS STALLED OUT. THE CONSUMER HAD TO STOP…”NHTSA complaint 10123953 — filed 07/08/2005

“DT: CONSUMER WAS APPROACHING AN INTERSECTION WHILE DRIVING IN A 2004 TOYOTA PRIUS AT 45 MPH AND WHEN ALL OF THE DAS LIGHT ILLUMINATED. AS…”NHTSA complaint 10124672 — filed 06/28/2005

Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.

Electrical System complaints by year filed

Frequently asked questions

Does the 2004 Toyota Prius have electrical system problems?

Electrical System is the #2 most-reported problem area on the 2004 Toyota Prius: 153 of 610 complaints on file (25.1%). Complaints are unverified owner reports, not confirmed defects.

How many complaints does the 2004 Toyota Prius have in total?

610 complaints were on file with NHTSA as of 07/14/2026. Across all categories, 38 involved a crash, 2 involved a fire, 29 reported injuries, and none reported deaths.

What does NHTSA's electrical system category include?

NHTSA assigns each complaint to standard component categories; this page reports the ELECTRICAL SYSTEM category exactly as NHTSA defines and records it.

About this data — Complaint figures on this page are consumer reports submitted to the National Highway Traffic Safety Administration (NHTSA), a U.S. government agency. NHTSA does not verify individual complaints; a complaint is not proof that a defect exists, and counts reflect what owners chose to report, not confirmed failure rates. Recall information comes from official NHTSA safety recall campaigns; recall repairs are free at authorized dealers. Always check your specific vehicle by VIN at nhtsa.gov/recalls. CarModelProblems.com is an independent site and is not affiliated with NHTSA or any vehicle manufacturer. Data through 07/14/2026.