NHTSA vehicle safety data
2021 BYD K9S Recalls & Complaints
The 2021 BYD K9S has 1 NHTSA recall campaign on file as of October 21, 2026. try.vin has no NHTSA owner complaints on file for the 2021 BYD K9S. Recall repairs are usually free at an authorized BYD dealer.
NHTSA recall and complaint data for the 2021 BYD K9S. Recall data is refreshed daily from NHTSA.
Incorrect Fuse May Overheat and Cause Fire
NHTSA #24V374000 · Visibility — Rearview Mirrors/Devices · NHTSA notice
Reported May 28, 2024 · BYD Coach & Bus
Potentially affected: 227 vehicles
Repair completion: 100% (latest rate the manufacturer reported to NHTSA; dataset updated October 21, 2026)
Owners notified June 10, 2024 · Recall influenced by NHTSA's Office of Defects Investigation
Defect description
BYD Coach & Bus (BYD) is recalling certain 2019-2023 BYD RIDE C10M, K7M, K8M, K9M, K9S, K9MD, and K11M transit buses. The rearview mirror control switch module may have been manufactured with an incorrect fuse.
Safety consequence
An incorrect fuse may overheat and increase the risk of a fire.
Manufacturer remedy
BYD will replace the fuse in the mirror control switch module with a 1-AMP fuse, free of charge. Owner notification letters were mailed June 10, 2024. Owners may contact BYD customer service at 1-661-940-3250.
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.safercar.gov.
Other BYD K9S model years
Check your 2021 BYD K9S VIN
Not every recall applies to every VIN in a given year. Enter the 17-character VIN from your BYD K9S at nhtsa.gov/recalls to see whether your specific vehicle has an unrepaired recall.
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