Recall 13V235 affects 87,060 2010 Toyota Prius and Hs vehicles for a brake booster pump leak. Repair is free at any franchised Toyota dealer.
Toyota is recalling 87,060 2010 Prius and Hs vehicles because nitrogen gas from the brake booster pump assembly can leak into the brake fluid. That leak can reduce brake hydraulic pressure, affect stopping distance, and increase the risk of a crash; the Toyota dealer repair will be free once available.
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What's wrong?
The brake booster pump assembly on affected 2010 Prius and Hs vehicles helps the brake system build and hold hydraulic pressure. That pressure turns pedal force into braking force at the wheels. Brake fluid is meant to stay liquid and firm under pressure, so the system can respond predictably when you press the pedal.
In this recall, nitrogen gas from a component inside the brake booster pump assembly can leak into the brake fluid. Gas compresses in a way brake fluid does not. Once gas enters the fluid, the brake system loses the firm hydraulic feel it relies on, and braking response can change from what the driver expects.
There is no warning sign before failure. If the brake pedal suddenly feels different, braking takes more effort, or the vehicle does not slow as expected, treat that as a brake problem and have the vehicle handled by a Toyota dealer.
Who's affected?
Covers Prius and Hs cars from the same model year, each tied to the brake system.
| 2010 Toyota Prius | brake system |
|---|---|
| 2010 Lexus Hs | brake system |
| Units affected | 87,060 |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific car is included.
What's the safety risk?
Nitrogen released into the brake fluid reduces hydraulic pressure at the brake pedal. Under certain circumstances, that loss of pressure affects stopping distance and increases the risk of a crash. There is no specific warning sign listed, so treat any change in brake feel as a reason to stop and call a Toyota dealer. Repair will be free at any franchised Toyota dealer once available.
What should I do?
- Check your VIN to confirm your 2010 Toyota Prius or Hs is included in this recall.
- Watch for Toyota owner mail if you have not received a recall notice.
- Contact a franchised Toyota dealer and ask about the free brake booster pump assembly replacement that restores proper brake pressure.
- Reference recall number 13V235 when you call Toyota or the dealer.
- Drive cautiously until the repair is complete. Leave extra following distance and avoid hard braking.
What happens at the repair
When the repair is open for your VIN, a Toyota technician replaces the affected brake booster pump assembly, the part that helps provide hydraulic brake assist. Toyota's remedy calls for replacement of the affected assembly at no charge. The final dealer repair will be free once available. Before scheduling, ask the Toyota service desk to confirm that campaign 13V235 is open for your VIN and that the replacement assembly is ready.
Timeline
| June 5, 2013 | NHTSA published the recall |
|---|---|
| August 7, 2013 | Owner notification mailed |
Frequently asked questions
What is recall 13V235?
Recall 13V235 covers 87,060 2010 Toyota Prius and Lexus Hs vehicles with a brake booster pump assembly defect. Nitrogen gas can leak into the brake fluid, reduce brake pedal hydraulic pressure, affect stopping distance, and increase crash risk.
What should I do if my 2010 Toyota Prius or Lexus Hs is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 13V235. If it is, contact a franchised Toyota dealer and ask for the brake booster pump assembly replacement. Reference recall number 13V235 when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost. Toyota dealers will replace the affected brake booster pump assemblies free of charge under recall 13V235.
What is the safety risk?
The safety risk is reduced braking performance. If nitrogen enters the brake fluid, the brake pedal can lose hydraulic pressure under certain circumstances. That can affect stopping distance and increase the risk of a crash.
What if I bought my 2010 Prius or Hs used?
The free repair still applies. Federal recall law follows the vehicle, not the first owner. Check your VIN to confirm whether your specific 2010 Prius or Hs is included, then call a franchised Toyota dealer with recall number 13V235.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/13V235000 |
|---|---|
| Toyota customer service | 1-800-331-4331 |
| NHTSA recall # | 13V235 |
| NHTSA recall # (full) | 13V235000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Recall Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Recall Document (PDF) (PDF)
- Download Owner Notice (PDF)
- Download Quarterly Report (PDF)
- Download Defect / Noncompliance Notice (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on June 2, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →