April 24, 2023 NHTSA CAMPAIGN NUMBER: 23V291000
High Voltage Battery Pack May Short Circuit
A battery short circuit may increase the risk of a fire.
NHTSA Campaign Number: 23V291
Manufacturer Nova Bus
(US) Inc.
Components ELECTRICAL SYSTEM
Potential Number of Units Affected 7
Summary
Nova Bus (US) Inc. (Nova Bus) is recalling certain 2022-2023 LFS battery electric transit buses. The coolant line in the high voltage battery pack may not be fully seated and locked, which can result in the loss of coolant and an electrical short circuit.
Remedy
Nova Bus will work with Akasol, the battery pack manufacturer to inspect the battery packs, and replace them as necessary, free of charge. Owner notification letters are expected to be mailed June 16, 2023. Owners may contact Nova Bus customer service at 1-800-350-6682. Nova Bus’s number for this recall is CR5406.
Notes
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.
Chronology :
2023-04-05: During Trucks NA product reviews of Akasol’s battery packs at the Volvo Trucks and Mack Trucks manufacturing plants and Akasol US plant, discrepancies related to battery packs assembly were detected and this information is brought to the Trucks NA Product Safety Working Group and a safety investigation is opened.
2023-04-10: Nova Bus issues a preventive delivery stop for its plants.
2023-04-12: Trucks NA Product Safety Working Group meets and reviews findings from our plants and Akasol US plant battery pack assembly operations and makes recommendation that this be raised to the Trucks NA Product Safety Committee.
2023-04-12 Nova Bus Product Safety Committee is informed of the situation. No determination is made.
2023-04-13 Nova Bus Product Safety Working Group evaluates this Potential Safety-Related Issue and raise it to the Nova Bus Product Safety Committee.
2023-04-14: Trucks NA Product Safety Committee evaluates this Potential Safety-Related Issue and determines a Safety-Related Defect exists.
2023-04-17: Nova Bus Product Safety Committee evaluates this Potential Safety-Related Issue and determines a Safety-Related Defect exists.
2023-04-24: Nova Bus submits a vehicle recall report to NHTSA.
Nova Bus has not received any consumer complaint, field report, warranty claim, property damage claim, and neither notice or claim of injury or death associated with this defect.
2 Affected Products
Vehicle
| MAKE | MODEL | YEAR |
| NOVA BUS | LFS | 2022-2023 |
2 Associated Documents
Recall Acknowledgement
RCAK-23V291-4838.pdf 691.381KB
Defect Notice 573 Report
RCLRPT-23V291-2062.PDF 214.394KB
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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-291 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Nova Bus (US) Inc. Submission Date : APR 24, 2023 NHTSA Recall No. : 23V-291 Manufacturer Recall No. : CR5406 Manufacturer Information : Manufacturer Name : Nova Bus (US) Inc. Address : 260 Banker Road PLATTSBURGH NY 12901 Company phone : 450-472-6410 Population : Number of potentially involved : 7 Estimated percentage with defect : 13 % Vehicle Information : Vehicle 1 : 2022-2023 Nova Bus LFS Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : NR Descriptive Information : All battery electric vehicles equipped with Akasol Gen3 high voltage battery packs manufactured by Akasol US. Production Dates : MAR 15, 2022 – FEB 24, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : Coolant connections in the high voltage battery pack may not be properly assembled and under certain conditions may result in a coolant leak and coolant accumulation inside the battery pack. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : Under certain conditions, coolant in high voltage battery pack may cause an electric short and may lead to a thermal runaway of the battery pack which may increase the risk of a vehicle fire. Occurrence may happen with vehicle is in operation, charging or parked. Nova Bus has not received any consumer complaint, field report, warranty claim, property damage claim, and neither notice or claim of injury or death associated with this defect. Therefore, we consider this as a proactive measure to protect the public from the potential safety risk associated with this defect. Description of the Cause : Battery pack supplier manufacturing defect(s) in the assembly of the battery Part 573 Safety Recall Report 23V-291 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 packs due to inadequate process controls and detection related to those defects. Identification of Any Warning that can Occur : When the vehicle is in operation, a low coolant and/or thermal runaway detection tell-tale warning to the driver may illuminate. Involved Components : Component Name 1 : Battery Component Description : High voltage battery pack Component Part Number : NR Supplier Identification : Component Manufacturer Name : Akasol Inc. Address : 1400 E. 10 Mile Road Suite 15 Hazel Park Michigan 48030 Country : United States Chronology : 2023-04-05: During Trucks NA product reviews of Akasol’s battery packs at the Volvo Trucks and Mack Trucks manufacturing plants and Akasol US plant, discrepancies related to battery packs assembly were detected and this information is brought to the Trucks NA Product Safety Working Group and a safety investigation is opened. 2023-04-10: Nova Bus issues a preventive delivery stop for its plants. 2023-04-12: Trucks NA Product Safety Working Group meets and reviews findings from our plants and Akasol US plant battery pack assembly operations and makes recommendation that this be raised to the Trucks NA Product Safety Committee. 2023-04-12 Nova Bus Product Safety Committee is informed of the situation. No determination is made. 2023-04-13 Nova Bus Product Safety Working Group evaluates this Potential Safety-Related Issue and raise it to the Nova Bus Product Safety Committee. 2023-04-14: Trucks NA Product Safety Committee evaluates this Potential Safety-Related Issue and determines a Safety-Related Defect exists. 2023-04-17: Nova Bus Product Safety Committee evaluates this Potential Safety-Related Issue and determines a Safety-Related Defect exists. 2023-04-24: Nova Bus submits a vehicle recall report to NHTSA. Part 573 Safety Recall Report 23V-291 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Nova Bus has not received any consumer complaint, field report, warranty claim, property damage claim, and neither notice or claim of injury or death associated with this defect. Description of Remedy : Description of Remedy Program : Nova Bus will release a service document to inspect the coolant connections inside the battery packs. Akasol will perform the inspection. If any defect is detected the battery pack will be removed and replaced with certifies battery pack. All costs associated with this corrective measure will be covered by Nova Bus. All affected vehicles are still under warranty. Pre-notification remedies will be addressed using the Nova Bus general reimbursement plan on file with NHTSA. How Remedy Component Differs from Recalled Component : Akasol Gen 3 battery packs which have undergone additional inspection by Akasol at the Nova Bus plants or at the Akasol’s plant in US are certified batttery packs. Identify How/When Recall Condition was Corrected in Production : There is a delivery stop since 2023-04-10 pending battery packs certification from Akasol inspection. Recall Schedule : Description of Recall Schedule : Note Nova Bus does not have a dealer network and the dates entered for the planned dealer notification begin/end date are only to avoid NHTSA Recall Portal error while submitting the recall report. Planned Dealer Notification Date : JUN 16, 2023 – JUN 16, 2023 Planned Owner Notification Date : JUN 16, 2023 – JUN 16, 2023 * NR – Not Reported
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