The Recall Desk
Our severity:SevereNHTSA·20V739000·Announced 2020-11-25

Peterbilt 520 Recalled for Incorrect Brake Relay Connections

PACCAR is recalling 2020-2021 Peterbilt 520 vehicles because incorrectly connected brake components may destabilize the vehicle during stability control events, increasing crash risk.

What this means for you

Our assessment, not the agency’s: severity 4/5 (Severe).

The hazard poses a serious risk of illness, injury, or structural failure. Stop using the product immediately and contact the manufacturer for a refund or repair.

Our severity reasoning: The recall involves a structural vehicle defect in the braking system that could destabilize the vehicle and increase the risk of a crash, meeting the criteria for a Severe rating.

Plain-English summary

PACCAR Incorporated is recalling certain 2020-2021 Peterbilt 520 vehicles. The recall addresses a defect where the stability control brake relay may have the Spring Brake Modulating (SBM) Valve or the lift axle hose incorrectly connected.

This incorrect connection means that a stability control event intended to actuate only the ABS controlled wheel ends could instead actuate lift axle brakes or modulate park brake chambers. This malfunction could destabilize the vehicle, increasing the risk of a crash.

PACCAR will notify owners, and dealers will inspect the suspect chassis and correct the brake relay plumbing if needed, free of charge. PACCAR issued an interim notification to owners on January 4, 2020, and mailed owner notification letters on January 25, 2021. Owners may contact Peterbilt customer service at 1-940-591-4220 or the NHTSA Vehicle Safety Hotline at 1-888-327-4236.

The recalled product

Product
PETERBILT 520
Brand
PETERBILT
Manufacturer
PACCAR Incorporated
Category
Vehicle — Commercial Truck
Hazard
Affected units
11

Is your product affected?

Check your packaging against the codes below. If any of them match, the product is part of this recall.

Model numbers (1)

  • 520

Distribution

Distributed nationwide across the United States.

Related recalls

Same brand · PETERBILT

Same manufacturer · PACCAR Incorporated

See all →

Same hazard · brake failure

See all →

Similar recalls