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Campaign 10V535 Posted October 27, 2010 417 units

2009-2011 Kenworth T660-T800/W900 Recall 10V535: Caliper

RN
Reviewed by the RecallNotify editorial team
Published June 3, 2026

Recall 10V535 affects 417 2009-2011 Kenworth T700, T660, W900, and T800 trucks for misinstalled brake calipers. Repair is free at any franchised Kenworth dealer.

Kenworth is recalling 417 2009-2011 T700, T660, W900, and T800 trucks equipped with AG400L air disc brakes because a brake caliper can be installed on the wrong side of the drive axle. As the outer brake pads wear, the caliper can interfere with rear suspension parts, reducing braking performance and increasing crash risk; the Kenworth dealer repair will be free once available.

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What's wrong?

The air disc brake caliper on 2009-2011 Kenworth T700, T660, W900, and T800 trucks is the clamp that squeezes the brake pads against the disc. On trucks with AG400L air disc brakes, the caliper floats side to side as the pads wear so it keeps even pressure on the disc.

In this recall, the caliper can be installed on the wrong side of the drive axle. As the outside brake pads wear, the floating caliper moves inward. That movement puts the caliper too close to the suspension bracket and rear suspension, creating interference between brake and suspension parts that need clear space to move.

There is no warning sign before failure. An owner or driver is not given a specific noise, light, or pedal change in the recall record to rely on before the parts interfere.

Who's affected?

Covers the T700, T660, W900, and T800 across the 2009, 2010, and 2011 model years, all tied to the same brake system component.

2011 Kenworth T700 brake system
2010 Kenworth T700 brake system
2009 Kenworth T700 brake system
2009 Kenworth T660 brake system
2009 Kenworth W900 brake system
Units affected417

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

What's the safety risk?

As the brake caliper interference grows, braking performance can be reduced, increasing crash risk. Until the caliper orientation is checked, schedule the repair soon and take any change in braking feel seriously. Repair will be free at any franchised Kenworth dealer once available.

What should I do?

  1. Check your VIN to confirm your 2009-2011 Kenworth T700, T660, W900, or T800 is included in this recall.
  2. Review the owner notice Kenworth mailed on November 24, 2010, and keep it with your service paperwork.
  3. Contact a franchised Kenworth dealer and ask whether recall number 10V535 still needs the free brake-caliper inspection on your truck.
  4. Schedule the brake-caliper orientation check and repair that fixes calipers installed on the wrong side of the drive axle.
  5. Drive with extra following distance until the repair is complete because reduced braking performance raises crash risk.

What happens at the repair

At the dealer, a Kenworth technician checks that each AG400L air disc brake caliper is installed in the correct orientation on the drive axle. If the caliper is on the wrong side or interferes with the suspension bracket as the brake pads wear, the technician performs the needed repair. The dealer repair will be free once available, with parts and labor covered under the recall. The source does not give a repair time, so ask the service desk how long the inspection and any repair will take when you schedule service.

Timeline

October 27, 2010 NHTSA published the recall
November 24, 2010 Owner notification mailed

Frequently asked questions

What is recall 10V535?

Recall 10V535 covers 417 2009-2011 Kenworth T700, T660, W900, and T800 vehicles with AG400L air disc brakes. The brake caliper was installed on the wrong side of the drive axle, creating interference as the brake pads wear. Kenworth dealers verify the caliper orientation and repair it for free.

What should I do if my 2009-2011 Kenworth T700, T660, W900, or T800 is on this recall?

Check your VIN to confirm your specific truck is included in recall 10V535. If it is, contact a franchised Kenworth dealer and ask for the AG400L air disc brake caliper inspection and repair. Reference recall number 10V535 when you call. The dealer repair is free.

Is the recall repair free?

Yes. Federal recall law requires the manufacturer to repair the safety defect at no cost. For recall 10V535, Kenworth dealers verify the brake caliper orientation and perform the needed repair free of charge.

What is the safety risk in recall 10V535?

The safety risk is reduced braking performance. Recall 10V535 says the brake caliper interference grows as the outer brake pads wear and the floating caliper moves inward, increasing crash risk. If your VIN is included, schedule the free Kenworth dealer repair.

What if I bought my Kenworth truck used?

The free recall repair still applies. Recall eligibility follows the VIN, not the original owner. Check your VIN to confirm whether your 2009-2011 Kenworth T700, T660, W900, or T800 is included, then call a Kenworth dealer with recall number 10V535.

More information

NHTSA campaign pagenhtsa.gov/vehicle-recalls/10V535000
Kenworth customer service425-828-5440
NHTSA recall #10V535
NHTSA recall # (full)10V535000

Source documents

This article is generated from NHTSA's primary recall filings and reviewed against the source on June 3, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →