2005 Toyota Highlander Electrical System Problems
NHTSA component category: ELECTRICAL SYSTEM · data through 07/12/2026
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
Share of the 224 complaints citing each category; one complaint can cite several. Full breakdown on the 2005 Toyota Highlander overview page.
What owners report
“HEATER/AC FUNCTIONS INTERMITTENTLY THEN FAILS COMPLETELY. WELL KNOW PROBLEM WHERE PLACEMENT OF RIBBON CABLE TO POTENTIOMETER BREAKS LOOSE, PARTIALLY (INTERMITTENT FAILURE), THEN COMPLETELY (TOTAL FAILURE)…”NHTSA complaint 10371589 — filed 12/17/2010
“THE CONTACT OWNS A 2005 TOYOTA HIGHLANDER HYBRID. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 25 MPH, THE INVERTER STALLED. ALL THE WARNING LIGHTS ILLUMINATED…”NHTSA complaint 10365092 — filed 11/09/2010
“TOYOTA HIGHLANDER 2005 - 4 CYL DRIVING IN THE RAIN, OVER PUDDLES OF WATER THAT CREATE A SPLASH UP TO ABOUT 3/4 THE HEIGHT OF…”NHTSA complaint 10343774 — filed 07/17/2010
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Electrical System complaints by year filed
Frequently asked questions
Does the 2005 Toyota Highlander have electrical system problems?
Electrical System is the #3 most-reported problem area on the 2005 Toyota Highlander: 22 of 224 complaints on file (9.8%). Complaints are unverified owner reports, not confirmed defects.
How many complaints does the 2005 Toyota Highlander have in total?
224 complaints were on file with NHTSA as of 07/12/2026. Across all categories, 35 involved a crash, 4 involved a fire, 20 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.
