2012 Toyota Sienna 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 246 complaints citing each category; one complaint can cite several. Full breakdown on the 2012 Toyota Sienna overview page.
What owners report
“TAKATA RECALL & DOOR RECALL - I AM TRYING TO SELL MY VEHICLE PRIVATELY BECAUSE I PURCHASED A NEW VEHICLE AND NOW I AM UNABLE…”NHTSA complaint 10956585 — filed 02/23/2017
“ALL UNDERWOOD COMPONENTS ARE NOT ONLY VULNERABLE, BUT ATTRACTIVE TO RODENTS. WHILE PARKED OVERNIGHT ON 4 CONSECUTIVE NIGHTS, RODENTS HAVE CHEWED THROUGH WIRES DESPITE ATTRACTIVE…”NHTSA complaint 10787185 — filed 10/30/2015
“THE CONTACT OWNS A 2012 TOYOTA SIENNA. WHILE DRIVING APPROXIMATELY 40 MPH, THE REAR DRIVER SIDE SLIDING DOOR SUDDENLY OPENED. WHILE ATTEMPTING TO SHUT THE…”NHTSA complaint 10694119 — filed 03/13/2015
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Electrical System complaints by year filed
Frequently asked questions
Does the 2012 Toyota Sienna have electrical system problems?
Electrical System is the #4 most-reported problem area on the 2012 Toyota Sienna: 24 of 246 complaints on file (9.8%). Complaints are unverified owner reports, not confirmed defects.
How many complaints does the 2012 Toyota Sienna have in total?
246 complaints were on file with NHTSA as of 07/12/2026. Across all categories, 10 involved a crash, 4 involved a fire, 13 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.
