2018 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 255 complaints citing each category; one complaint can cite several. Full breakdown on the 2018 Toyota Highlander overview page.
What owners report
“1.) Bluetooth connects without issue to iPhone (for both media and phone) however during a phone call (incoming/outgoing) the car system will drop the call…”NHTSA complaint 11445074 — filed 12/27/2021
“Unable to start vehicle twice. In both instances, foot was placed on the brake before pressing Start button and brake was extremely stiff. When Start…”NHTSA complaint 11434415 — filed 09/26/2021
“Upon turning on the vehicle the brake peddle locked and the steering wheel. Message prompted "braking power low, stop in safe place". After that all…”NHTSA complaint 11420820 — filed 06/14/2021
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Electrical System complaints by year filed
Frequently asked questions
Does the 2018 Toyota Highlander have electrical system problems?
Electrical System is the #5 most-reported problem area on the 2018 Toyota Highlander: 24 of 255 complaints on file (9.4%). Complaints are unverified owner reports, not confirmed defects.
How many complaints does the 2018 Toyota Highlander have in total?
255 complaints were on file with NHTSA as of 07/12/2026. Across all categories, 21 involved a crash, 1 involved a fire, 24 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.
