RecallNotify
Sign up Check my VIN
Home/ Recalls/ Kenworth/ 13V573
Campaign 13V573 Posted November 18, 2013 18 units

2007-2014 Kenworth T800/W900 Recall 13V573: Brake Delay

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

Recall 13V573 covers 18 2007-2014 Kenworth W900 and T800 trucks with slow air-brake response. Repair is free at any franchised Kenworth dealer.

Kenworth is recalling 18 2007-2014 W900 and T800 trucks equipped with Primaax tridem rear suspensions and a pusher or tag axle because the brake chambers take too long to apply or release. Slower brake application lengthens stopping distance and increases crash risk; the Kenworth dealer repair will be free once available.

Does this recall apply to your specific vehicle?

The official, free per-VIN recall check is run by NHTSA. Enter your VIN and we'll forward you directly — and add you to a free watchlist so you hear about new recalls for your vehicle.

Check my VIN at NHTSA

RecallNotify doesn't check your VIN — NHTSA's official tool does. We use your email only to alert you to new recalls.

What's wrong?

The brake chambers on 2007-2014 Kenworth W900 and T800 trucks are part of the air brake system. When the driver presses the brake pedal, air pressure moves through the system and the chambers convert that pressure into mechanical force at the brakes. When the pedal is released, the chambers also have to let the brakes release quickly enough for normal control.

On affected trucks with Primaax tridem rear suspensions and a pusher or tag axle, the brake chambers take too long to apply or release the brakes. The filing does not identify a separate broken part inside the chamber; the problem is the response time of the brake system in this axle and suspension setup. That delay means the truck does not meet the required air brake timing standard.

There is no warning sign before failure. A driver should not count on a light, sound, or pedal change to flag this defect before the brake response is too slow.

Who's affected?

Covers T800 and W900 trucks across the 2007-2014 model years, all tied to the brake system.

2008 Kenworth W900 brake system
2007 Kenworth T800 brake system
2008 Kenworth T800 brake system
2007 Kenworth W900 brake system
2009 Kenworth W900 brake system
Units affected18

The year and model narrow the scope, but the VIN decides. Check your VIN to confirm whether your specific truck is included.

What's the safety risk?

Delayed brake application lengthens the distance needed to stop the truck and increases the risk of a crash. Leave extra stopping room and schedule the recall repair soon after you confirm your VIN is included. Repair will be free at any franchised Kenworth dealer once available.

What should I do?

  1. Check your VIN to confirm your 2007-2014 Kenworth W900 or T800 is included in this recall.
  2. Contact Kenworth customer service at 1-425-468-7400 for the current repair timing before moving the truck.
  3. Reference recall number 13V573 and Kenworth recall 13KWL when you call a franchised Kenworth dealer.
  4. Drive cautiously until the air-brake-system modification is complete; leave extra stopping distance because delayed brake application lengthens stopping distance.

What happens at the repair

At the dealer, a Kenworth technician modifies the air brake system so the brake chambers apply and release within the required timing. The filing says the recall began on January 15, 2014, and the work is performed free of charge. Because the source does not confirm whether this dealer repair is open now, call a Kenworth dealer with your VIN and ask the service desk to confirm the campaign repair before bringing the truck in.

Timeline

November 18, 2013 NHTSA published the recall
January 15, 2014 Owner notification mailed

Frequently asked questions

What is recall 13V573?

Recall 13V573 covers 18 2007-2014 Kenworth W900 and T800 trucks with Primaax tridem rear suspensions and a pusher or tag axle. The brake chambers take longer than allowed to apply or release the brakes. Kenworth dealers will modify the air brake system for free.

What should I do if my 2007-2014 Kenworth W900 or T800 is on this recall?

Check your VIN to confirm your specific truck is included in recall 13V573. If it is, contact a franchised Kenworth dealer and ask for the free air brake system modification. Reference Kenworth recall number 13KWL when you call.

Is the recall repair free?

Yes. Federal recall law requires the manufacturer to repair the safety defect at no cost. For recall 13V573, Kenworth dealers will modify the affected air brake system free of charge.

What is the safety risk in recall 13V573?

The safety risk is longer stopping distance. Brakes that take longer to apply can increase the distance needed to stop the truck, increasing crash risk. If your VIN is included, arrange the free Kenworth dealer repair before relying on the truck for regular service.

When did the Kenworth brake recall begin?

Kenworth began recall 13V573 on January 15, 2014. Because that date has passed, affected owners can contact a franchised Kenworth dealer now and ask for the air brake system modification tied to Kenworth recall number 13KWL.

More information

NHTSA campaign pagenhtsa.gov/vehicle-recalls/13V573000
Kenworth customer service1-425-468-7400
NHTSA recall #13V573
NHTSA recall # (full)13V573000

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 →