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Campaign 12V537 Posted November 14, 2012 669,705 units

2004-2009 Toyota Prius Recall 12V537: Steering Shaft

RN
Reviewed by the RecallNotify editorial team
Published June 2, 2026

Recall 12V537 affects 669,705 2004-2009 Toyota Prius vehicles for insufficiently hardened steering extension shaft splines. Repair is free at any franchised Toyota dealer.

Toyota is recalling 669,705 2004-2009 Prius vehicles because metal splines in the steering intermediate extension shaft were built with insufficient hardness. Over time, the splines can wear and fail, causing loss of steering ability and increasing crash risk; the Toyota dealer repair will be free once available.

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What's wrong?

The steering intermediate extension shaft on the 2004-2009 Toyota Prius is part of the mechanical link between the steering wheel and the steering gear. Inside that link, metal splines act like interlocking teeth, carrying the driver's steering input from the wheel down to the gear that turns the front wheels.

In NHTSA campaign 12V537, Toyota says those splines were built with insufficient hardness. That means the metal was not as hard as designed for the load it carries. Softer splines are more vulnerable to wear or deformation, which weakens the connection inside the steering shaft assembly.

There is no warning sign before failure. Do not rely on a dashboard light, noise, or gradual change in steering feel to confirm whether this Prius is affected.

Who's affected?

Each listed Prius year carries both steering gear and steering system component labels.

2004 Toyota Prius steering gear
2004 Toyota Prius steering system
2008 Toyota Prius steering gear
2008 Toyota Prius steering system
2009 Toyota Prius steering gear
Units affected669,705

A matching year and model does not confirm inclusion. Check your VIN to confirm whether your specific hatchback is included.

What's the safety risk?

The steering extension shaft splines can wear over time and fail, causing a loss of steering ability and increasing the risk of a crash. If your VIN is included, avoid unnecessary trips and schedule the inspection soon. Repair will be free at any franchised Toyota dealer once available.

What should I do?

  1. Check your VIN to confirm your 2004-2009 Toyota Prius is included in this recall.
  2. Contact a franchised Toyota dealer to ask about the free steering extension-shaft inspection and replacement for your VIN.
  3. Reference recall number 12V537 when you call the dealer or Toyota customer service.
  4. Bring the recall notice if Toyota mailed one, or bring your VIN and recall number to the appointment.
  5. Drive cautiously until the repair is complete. Leave extra room for steering response and stop driving if steering feel changes.

What happens at the repair

Toyota's remedy is an inspection of the steering intermediate extension shaft assembly. At the dealer, a Toyota technician checks the extension shaft splines for the insufficient hardness condition named in recall 12V537. If the shaft is one of the affected parts, the technician replaces it. Toyota states the recall began during December 2012, and the inspection and replacement are free of charge.

Timeline

November 14, 2012 NHTSA published the recall
December 20, 2012 Owner notification mailed

Frequently asked questions

What is recall 12V537?

Recall 12V537 covers 669,705 2004-2009 Toyota Prius vehicles with steering intermediate extension shaft splines that were built with insufficient hardness. Over time, the splines can wear and fail, causing loss of steering ability and increasing crash risk. Toyota dealers inspect and replace the affected shaft for free.

What should I do if my 2004-2009 Toyota Prius is on this recall?

Check your VIN to confirm your specific Prius is included in recall 12V537. If it is, contact a franchised Toyota dealer to schedule the steering extension shaft inspection. The dealer replaces the shaft for free if it has insufficient hardness. Reference recall number 12V537 when you call.

Is the recall repair free?

Yes. Federal recall law requires manufacturers to repair safety defects at no cost, and Toyota's remedy says dealers will inspect the steering extension shaft and replace it if needed free of charge. Use Toyota recall number 12V537 when scheduling service.

What is the safety risk with recall 12V537?

The safety risk is loss of steering ability. The affected steering intermediate extension shaft splines can wear over time and fail, which increases crash risk. If your VIN is included, have a Toyota dealer inspect the shaft and complete the free replacement before relying on the vehicle for regular driving.

What if I bought my Toyota Prius used?

The free recall repair still applies. Federal recall law follows the vehicle, not the original owner. Check your VIN to confirm whether your specific Prius is included, then call a franchised Toyota dealer and reference recall number 12V537. You can also contact Toyota at 1-800-331-4331.

More information

NHTSA campaign pagenhtsa.gov/vehicle-recalls/12V537000
Toyota customer service1-800-331-4331
NHTSA recall #12V537
NHTSA recall # (full)12V537000

Source documents

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 →