2015 Toyota Prius · symptom sheet
Brake warning light stays on
- 25owner reports
- 150,000median miles
- $3,000median quote
- 2involved a crash
Newest report Aug 11, 2026 · checked Oct 2, 2026
25 of the 92 reports of brake wear on the 2015 Prius describe brake light on.
Part of Brakes grind, pulse or wear early (92 reports) · also: brake booster failure, ABS light on
Tick what matches of 25 reports
Brake light on on other Prius years
Report counts are for each model year on its own, so a newer car has had less time to collect them. Model years with too few reports of it for a sheet: 2016.
What got replaced
Few of these reports name the part that was replaced.
Recalls and investigations
No recall on the brakes covers the 2015 model year as of Oct 2, 2026.
NHTSA investigations into the brakes on the Prius
Brake actuator valve wear. Open.
Brake actuator valve wear. Closed jan 21, 2021.
Braking performance, hybrid vehicle. Closed jul 12, 2010.
What owners paid
5 of the 25 reports quote a price. Each dot is one quote. The middle half runs $3,000 to $3,706.
When it happens
The middle half of failures fell between 94,100 and 150,000 miles, from the 14 reports that gave a mileage.
What owners wrote
“While driving, my brakes became mushy and ineffective. Brake warning lights came on, also. It was very scary driving in rush hour traffic with little to no brakes. There was no reliability. Just keeping as much as possible space between cars, using Hazard lights &prayer.”
Filed Jan 12, 2026
“Brake booster failed. ABS lights on. Brake light on. Traction control light on. Was sitting at stop with foot gently on brake when lights turned on. Attempted to restart car to clear lights, lights would not turn off after normal restart x3. Brake no longer function correctly, and the factory installed ABS are no longer functioning. Braking distance greatly increased, and no longer as safe to operate.”
Filed Aug 4, 2025
“While driving my Prius on the highway, the ABS and traction control warning light suddenly came on. The brakes started feeling different right away, and it didnât feel safe to drive. I took it to a Toyota dealership, and they found that the brake booster and pump had failed. I looked online and saw that many other Prius owners had the same issue, so it doesnât seem like an isolated case.”
Filed Jul 30, 2025
“2015 Toyota Prius ABS warning light came on . Went to car mechanic . Brake Actuator & Pump code leaking. It happen on 7/27/25 under 100,000 miles. Currently Anti Sway and ABS braking disable.”
Filed Jul 28, 2025 · 100,000 miles
Should you keep driving it?
This page can't tell you that. 2 of 25 reports involved a crash and 1 people were hurt. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.
File your own report with NHTSA. Complaint counts are how a problem gets an investigation. How reports land on this sheet.
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