PROBLEM GUIDE
Here's what owners are experiencing, based on our research of real owner reports and repair data.
Last updated May 2026
685
complaints filed for the 2012 model year
2010–2015
Model years affected
$1,500 – $7,500+
Typical repair cost, by problem
Click a problem for the full write-up — symptoms, what we found, and typical repair costs where we have them.
Tell us what's happening and get a preliminary diagnosis, typical cost range, and trusted shops near you.
Answer a few questions and get a preliminary read plus shops near you.
Start my diagnosis →Sudden brake failure without warning at highway speed
Check engine light: On
By far the largest complaint category for this vehicle (650+ of 685 total complaints): buzzing/hissing every 8-12 seconds, ABS/Brake/Traction Control lights illuminating simultaneously, diagnostic code C1391 (accumulator leak), and reports of sudden brake failure 'without warning' at highway speed.
Owners excluded despite meeting the mileage requirement
Check engine light: On
Toyota's voluntary Customer Support Programs (ZJB, ZKK, 21TE01, 23TE07) cover the brake booster defect above, but expire at 10 years/150,000 miles from manufacture — many owners report being excluded despite meeting the mileage requirement but exceeding the time limit.
Requires full replacement
Check engine light: On
Hybrid battery pack failures occur between 100,000-280,000 miles, requiring replacement.
Requires full inverter replacement
Check engine light: On
Inverter failure from road debris damage has been documented, requiring inverter replacement.
Two independent reports
Check engine light: On
Head gasket failures have been documented in two independent reports.
the single most expensive documented repair for this nameplate
Check engine light: Off
A front wheel bearing replacement at an unusually high cost is the single most expensive documented repair recorded for this nameplate.
The center multi-function display may fail
Check engine light: Off
The center multi-function display may fail. This is among the more frequently reported issues on this generation, with 880 owner reports on file.
The fuel gauge may read incorrectly
Check engine light: Off
The fuel gauge may read incorrectly. This is among the more frequently reported issues on this generation, with 352 owner reports on file.
The check engine light comes on due to a failed three-way coolant control valve
Check engine light: On
The check engine light comes on due to a failed three-way coolant control valve. This is among the more frequently reported issues on this generation, with 257 owner reports on file.
The power inverter coolant pump may fail
Check engine light: Off
The power inverter coolant pump may fail. This is among the more frequently reported issues on this generation, with 101 owner reports on file.
Stalling or loss of power occurs due to debris in the mass air flow sensor
Check engine light: On
Stalling or loss of power occurs due to debris in the mass air flow sensor. This is among the more frequently reported issues on this generation, with 38 owner reports on file.
The hybrid transmission may fail prematurely
Check engine light: Off
The hybrid transmission may fail prematurely. This is among the more frequently reported issues on this generation, with 28 owner reports on file.
Hard starting occurs if the car has been sitting for several days
Check engine light: Off
Hard starting occurs if the car has been sitting for several days. This is among the more frequently reported issues on this generation, with 21 owner reports on file.
Restriction of the hybrid battery cooling fan may cause illumination of the check engine light
Check engine light: On
Restriction of the hybrid battery cooling fan may cause illumination of the check engine light. This is among the more frequently reported issues on this generation, with 19 owner reports on file.
Toyota's voluntary Customer Support Programs (ZJB, ZKK, 21TE01, 23TE07) cover the brake booster defect, but expire at 10 years/150,000 miles from manufacture — many owners report being excluded despite meeting the mileage requirement but exceeding the time limit. Enter your VIN to get the confirmed, current recall picture for your specific car.
The information on this page is for general educational purposes only and is not a diagnosis. It is compiled from aggregated owner-reported data and publicly available sources, not from an inspection of your vehicle. Symptoms described here can have multiple causes, and the presence of a commonly reported problem does not mean your vehicle has it. Repair cost ranges are estimates that vary by region, shop, vehicle condition, and parts availability. Recall and service campaign information may be incomplete or out of date — verify current recall status with NHTSA or your manufacturer. MyGearGuru is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer; manufacturer and model names are used for identification only. Always consult a qualified technician before making repair decisions.
Brake booster/actuator pump assembly failures dominate this vehicle's complaint volume by an extreme margin — 650+ of 685 total complaints — with buzzing/hissing every 8-12 seconds, simultaneous ABS/Brake/Traction Control warning lights, and reports of sudden brake failure without warning at highway speed. This is the single most concentrated complaint pattern found to date for one defect.