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NHTSA ID Number: 11029641

Manufacturer Communication Number: 46-025

TSB/Document Date: 2026-03-05


Summary

Software updates are available for certain PeterbilteBay logo Model 220 BEVs that experience battery packeBay logo 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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KenwortheBay logo Truck Company
Customer Service Department
C/O PACCAReBay logo Parts
750 Houser Way North
Renton, WA 98057
(425) 828-5888

02/XX/2026
Subject: 46-025: DanaeBay logo 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 KenwortheBay logo Customer,
KenwortheBay logo 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:
DanaeBay logo 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@paccareBay logo.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 KenwortheBay logo and its dealer
network.
Sincerely,
KenwortheBay logo Customer Service

PeterbilteBay logo Motors Company
Customer Service Department
C/O PACCAReBay logo Parts
750 Houser Way North
Renton, WA 98057
(425) 828-5888

02/XX/2026
Subject: 46-025: DanaeBay logo 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 PeterbilteBay logo Customer,
PeterbilteBay logo 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: DanaeBay logo
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@paccareBay logo.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 PeterbilteBay logo and its dealer
network.
Sincerely,
PeterbilteBay logo Customer Service

XX/02/2026
Objet : 46-025 – Mise à jour du logiciel DanaeBay logo 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 KenwortheBay logo,
KenwortheBay logo 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
DanaeBay logo 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@paccareBay logo.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 KenwortheBay logo et
son réseau de concessionnaires.
Salutations,
Service à la clientèle de KenwortheBay logo.

1


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