OWNER WAS DRIVING AND VCS AND ABS WARNING LIGHTS CAME ON AND STAYED ON WHILE DRIVING AS WELL AS TIRE PRESSURE LIGHT. BRAKES ON VEHICLE DID NOT BRAKE AS WELL GOING DOWN HILL. TIRES SLIPPED AND SKIDDED IN THE RAIN ON THE HILLS IN VENTURA COUNTY. DRIVER CALLED TOYOTA AND THEY OPENED UP A CASE NUMBER. TOYOTA HAS ATTEMPTED TO FIX THE VEHICLE 3 TIMES AND CANNOT DETERMINE THE REASON WHY THE MALFUNCTION…
2012 toyota Sienna electrical problems
severe 24 complaints filed with NHTSA · avg repair $850
Complaints
24
Recalls
0
Crashes
0
Avg fix
$850
What owners are reporting 3 most recent
NO DASHBOARD LIGHTS WHEN VAN IS STARTED, ONLY COME ON WHEN LIGHT SWITCH IS ACTIVATED. DASHBOARD ON VISIBLE ON CLOUDY DAYS. *TR
WAS DRIVING HOME FROM RUNNING ERRANDS, ABOUT A 4 MILE DRIVE AT 35 MILES/HR. AT A STOP LIGHT THERE SEEMED TO BE SOME SORT OF ELECTRICAL SURGE. ALL THE DASHBOARD LIGHTS FLASHED AND THE VEHICLE TURNED OFF. I WAS ABLE TO PUT THE CAR IN PARK AND RESTART IT. THERE WERE NO WARNING LIGHTS ON AFTER RESTARTING THE ENGINE, SO I ASSUMED IT WAS A FLUKE AND CONTINUED ON MY WAY HOME. A LITTLE FURTHER DOWN T…
Common questions
How serious is the electrical problem on the 2012 toyota Sienna?
It's a meaningful issue. 24 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $850.
At what mileage does the electrical typically fail?
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Other problem areas on this vehicle
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Severity ratings are derived from reported crashes, fires, injuries, and fatalities.
Repair cost estimates are independent-shop national averages and may differ in your area.
Some links on this page are affiliate links.