NHTSA ID Number: 11029641
Manufacturer Communication Number: 46-025
TSB/Document Date: 2026-03-05
Summary
Software updates are available for certain Peterbilt
Model 220 BEVs that experience battery pack
cell imbalances.
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TSB/Document ID: 46-025
Replacement Service Bulletin Number:
MFR Communication Date: 2026-02-26
MFR Internal Campaign ID/Software Version: 46-025
Communication Type: Service Campaign
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System: Software
MFR Component Subsystem:
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Kenworth
Truck Company
Customer Service Department
C/O PACCAR
Parts
750 Houser Way North
Renton, WA 98057
(425) 828-5888
02/XX/2026
Subject: 46-025: Dana
Software Update for Battery Electric Vehicles (BEV) with
282 kWh Batteries
Expiration Date: 03/01/2027
FIELD SERVICE CAMPAIGN
This notice applies to your vehicle(s) with VIN(s) at the bottom or back of this page.
Dear Kenworth
Customer,
Kenworth
Truck Company has determined that certain K270 and K370 BEVs manufactured
between 03/18/2021 and 10/28/2024 with 282 kWh batteries may experience cell imbalance.
What is the problem?
Certain 282 kWh batteries may experience cell imbalance,
which may lead to reduced range and inconsistent
performance.
What will your dealer do?
Update software on the Battery Management System and
Vehicle Control Unit modules
What should you do?
Contact your dealer to schedule a repair appointment. This
service may require up to 2.0 hours of labor.
To locate your nearest dealer please scan the QR code at the top of this letter or use the Dealer
Locator at www.Kenworth.com. When scheduling this service, please refer to campaign 46-025:
Dana
Software Update for BEV with 282 kWh Batteries and the VIN(s) listed in this letter. There
will be no charge to you if completed by 03/01/2027.
If you no longer own the vehicle(s), please send an email 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 Kenworth
and its dealer
network.
Sincerely,
Kenworth
Customer Service
Peterbilt
Motors Company
Customer Service Department
C/O PACCAR
Parts
750 Houser Way North
Renton, WA 98057
(425) 828-5888
02/XX/2026
Subject: 46-025: Dana
Software Update for Battery Electric Vehicles (BEV) with
282 kWh Batteries
Expiration Date: 03/01/2027
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 220 BEVs manufactured during
04/30/2021 through 10/02/2024 with 282 kWh batteries may experience cell imbalance.
What is the problem?
Certain 282 kWh batteries may experience cell imbalance,
which may lead to reduced range and inconsistent
performance.
What will your dealer do?
Update software on the Battery Management System and
Vehicle Control Unit modules
What should you do?
Contact your dealer to schedule a repair appointment. This
service may require up to 2.0 hours of labor.
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 campaign 46-025: Dana![]()
Software Update for BEV with 282 kWh Batteries and the VIN(s) listed in this letter. There will
be no charge to you if completed by 03/01/2027.
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/02/2026
Objet : 46-025 – Mise à jour du logiciel Dana
des véhicules électriques à batterie avec
batteries 282 kWh
Date d’expiration : 01/03/2027
CAMPAGNE DE SERVICE SUR LE TERRAIN
Cet avis concerne votre (vos) véhicules dont le(s) NIV(s) se trouve(nt) au bas ou au verso de la présente.
Cher client Kenworth
,
Kenworth
Truck Company a constaté que les batteries 282 kWh de certains véhicules électriques à batterie
de modèles K270 et K370, fabriqués entre le 18/03/2021 et le 28/10/2024, peuvent subir un déséquilibre
des cellules.
Quel est le problème ?
Certaines batteries de 282 kWh peuvent présenter un déséquilibre
des cellules, ce qui peut entraîner une autonomie réduite et des
performances incohérentes.
Que fera votre concessionnaire ?
Mettre à jour le logiciel des modules de gestion de la batterie et de
l'unité de contrôle du véhicule.
Que devez-vous faire ?
Communiquer avec votre concessionnaire afin de prendre rendezvous pour une réparation. Ce service peut nécessiter jusqu’à 2.0
heures de main-d’œuvre.
Afin de localiser votre concessionnaire le plus près, veuillez balayer le code QR dans le coin supérieur
droit de la présente ou utiliser le Localisateur de concessionnaire sur www.Kenworth.com. Au moment de
prendre rendez-vous pour ce service, veuillez-vous référer à la campagne 46-025 – Mise à jour du logiciel
Dana
des véhicules électriques à batterie avec batteries 282 kWh, ainsi qu’au(x) NIV(s) listé(s) à la
présente. Ce service sera sans frais s’il est complété avant le 01/03/2027.
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 l’attention que vous portez à cette affaiire et valorisons votre fidélité envers Kenworth
et
son réseau de concessionnaires.
Salutations,
Service à la clientèle de Kenworth
.
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