NHTSA ID Number: 11026418
Manufacturer Communication Number: 46-019
TSB/Document Date: 2025-12-05
Summary
Repair procedures and warranty information for model 520EV are now available. Certain Peterbilt
579EV and 520EV chassis have the First Responder Guide (FRG) label incorrectly showing the cut loop on the wrong side and are missing the Low Voltage Battery Disconnect Switch and Do Not Jump Start labels. These labels are now available for installation.
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TSB/Document ID: 46-019
Replacement Service Bulletin Number:
MFR Communication Date: 2025-11-04
MFR Internal Campaign ID/Software Version: 46-019
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: UNKNOWN OR OTHER
MFR Component System:
MFR Component Subsystem:
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Peterbilt
Motors Company
Customer Service Department
C/O PACCAR
Parts
750 Houser Way North
Renton, WA 98057
(425) 828-5888
XX/XX/2025
Subject: 01-090: 520EV Cab Heater Deaeration Return Line and
46-019: 520EV Battery Electric Vehicle Labels
Expiration Date: 11/01/2026
FIELD SERVICE CAMPAIGN
This notice applies to your vehicle(s) with VIN(s) listed at the bottom or back of this page.
Dear Peterbilt
Customer:
Peterbilt
Motors Company has determined that certain model 520EV vehicles built from
02/26/2020 through 11/05/2024, may have an issue with trapped air in the cab heater coolant
system that may cause insufficient cab heat. Some chassis were also built without certain vehicle
information labels.
What is the problem?
Trapped air in the cab heater coolant system may reduce
heating. Additionally, some chassis were built before certain
vehicle information labels were available.
What will your dealer do?
Install an updated cab heater coolant return line routing kit and,
if needed, vehicle information labels.
What should you do?
Contact your dealer to schedule a repair appointment.
To locate your nearest dealer please scan the QR code at the top of this letter or use Find a Dealer
at www.Peterbilt.com. When scheduling this service, please refer to campaigns 01-090: 520EV
Cab Heater Deaeration Return Line, 46-019: 520EV Battery Electric Vehicle Labels, and the
VIN(s) listed in this letter. This service may require up to 4 hours of labor. There will be no charge
to you if completed by 11/01/2026.
If you no longer own the vehicle(s), please send an e-mail to servicebulletins@paccar
.com with
the complete VIN(s) and the name and address of the new owner.
We appreciate your attention to this matter and value your loyalty to Peterbilt
and its dealer
network.
Sincerely,
Peterbilt
Customer Service
XX/XX/2025
Objet : 01-090 – 520EV : Ligne de retour de désaération du chauffage de cabine et
46-019 – 520EV : Étiquettes des véhicules électriques à batterie
Date d’expiration : 01/11/2026
CAMPAGNE DE SERVICE SUR LE TERRAIN
Cet avis concerne votre (vos) véhicule(s) dont le(s) NIV(s) se trouve(nt) au bas ou au verso de la présente.
Cher client Peterbilt
:
Peterbilt
Motors Company a constaté qu’il est possible que certains véhicules de modèle 520EV, fabriqués
entre le 26/02/2020 et le 05/11/2024, pourraient présenter un problème d'air emprisonné dans le système de
refroidissement du chauffage de la cabine, ce qui pourrait entraîner un chauffage insuffisant de la cabine.
Certains châssis ont également été fabriqués sans certaines étiquettes d'information sur le véhicule.
Quel est le problème ?
L'air emprisonné dans le système de refroidissement du chauffage de la
cabine peut réduire le chauffage. De plus, certains châssis ont été
fabriqués avant que certaines étiquettes d'information sur le véhicule ne
soient disponibles.
Que fera votre concessionnaire ? Installera une trousse de mise à jour de routage de la ligne de retour de
liquide de refroidissement du chauffage de cabine et, au besoin, des
étiquettes d'information sur le véhicule.
Que devez-vous faire ?
Communiquer avec votre concessionnaire afin de prendre rendez-vous
pour une réparation.
Afin de localiser votre concessionnaire le plus près veuillez balayer le code QR dans le coin supérieur droit de
la présente ou consulter Trouver un concessionnaire sur www.Peterbilt.com. Au moment de prendre rendezvous pour ce service, veuillez vous référer aux campagnes 520EV : Ligne de retour de désaération du
chauffage de cabine et 46-019 – 520EV : Étiquettes des véhicules électriques à batterie, ainsi qu’au(x) NIV(s)
listé(s) à la présente. Ce service peut nécessiter jusqu’à 4 heures de main-d’œuvre et sera effectué sans frais
s’il est complété avant le 01/11/2026
Si vous n’êtes plus le propriétaire de ce(s) véhicule(s), veuillez faire parvenir un courriel à
servicebulletins@paccar
.com avec le(s) NIV(s) complet(s), ainsi que le nom et l’adresse du nouveau
propriétaire.
Nous apprécions le soin que vous portez à cette affaire et valorisons votre fidélité envers Peterbilt
et son
réseau de concessionnaires.
Salutations,
Service à la clientèle de Peterbilt![]()
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