22523 High Voltage Cables Labeled Incorrectly – 2022-2023 IC Bus EV School Buses

November 17, 2022 NHTSA CAMPAIGN NUMBER: 22V850000

High Voltage Cables Labeled Incorrectly

A misidentified electrical cable may be mistaken for a de-energized cable by a technician or first responder, increasing the risk of electrical shock and injury.


NHTSA Campaign Number: 22V850

Manufacturer Navistar, Inc.


Potential Number of Units Affected 149



Navistar, Inc. is recalling certain 2022-2023 IC EV school buses. The high voltage positive cables that connect the battery packs to the manual service disconnects (MSD) may have been mislabeled.



Dealers will reinstall the battery cables and replace the associated warning labels, free of charge. Interim owner notification letters were mailed January 13, 2023. Remedy parts are expected to become available in the 1st Quarter of 2023. Owners may contact Navistar’s customer service at 1-800-448-7825. Navistar’s number for this recall is 22523.



Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.


MARCH 2023


High-Voltage positive cables on certain IC Bus@ Electric CE Series school bus models built 10/13/2020 thru 10/18/2022 with feature codes 0008TLC (210 kWh Total Battery Capacity) or  0008TLD (315 kWh Total Battery Capacity)



The high-voltage positive cables from the battery packs to the Manual Service Disconnects (MSDs) may have incorrect identification marking tape that indicates a lower level 2 isolation (MSD removal) instead of indicating a level 3 isolation (battery fuse removal). An incorrectly identified cable may indicate to a first responder, technician, or customer that the cable is de-energized, when it may not be, possibly increasing the risk of electrical shock resulting in personal injury or death.



This safety recall involves certain IC Bus® Electric CE Series school bus models built 10/13/2020 thru 10/18/2022 with feature codes 0008TLC (21 O kWh Total Battery Capacity) or 0008TLD (315 kWh Total Battery Capacity).



Description Tool Number
Lift Assembly 08-529-01
Plastic Bag Source Locally
Plastic Blade (Boxcutter, Pick) Source Locally



Part Number Part Description Quantity
4309053C1 Tape, High-Voltage Wrap White 1
4309732C1 Label, High-Voltage Black 3 Per Cable
306132C1 Strap, Cable Lock As Needed





Chronology :

  • 10/14/2022 – Navistar’s eMobility group meets with Engineering, R&Q, After Sales, and Compliance to discuss the issue and initiates investigation to determine the impact to International and IC vehicles.
  • 10/18/2022 – Navistar Manufacturing contains the issue at all assembly plants.
  • 11/07/2022 – Navistar finalizes the suspect population.
  • 11/10/2022 – Navistar declares a Safety Recall.
  • 11/22/2022 – To date, there have been no warranty claims, field service reports, or any other data related to this issue.


2 Affected Products


IC BUS EV 2022-2023


6 Associated Documents

Defect Notice 573 Report

RCLRPT-22V850-4773.PDF 214.096KB



Recall Acknowledgement

RCAK-22V850-6265.pdf 646.216KB



Recall 573 Report – November 22, 2022

RCLRPT-22V850-2567.PDF 214.21KB



ISSUED Interim Owner Notification Letter(Part 577)

RIONL-22V850-1202.pdf 35.076KB



Remedy Instructions and TSB

RCRIT-22V850-2497.pdf 541.829KB



ISSUED Owner Notification Letter(Part 577)

RCONL-22V850-6400.pdf 42.373KB



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Last update on 2023-11-13 / Affiliate links / Images from Amazon Product Advertising API

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