2017–2020 MCI J4500 Recall: Coolant hose may fail, resulting in a low coolant warning followed by an…
NHTSA campaign 20V526000 · Engine and Engine Cooling · filed Aug 31, 2020 · verified Jul 30, 2026
The defect
Motor Coach Industries (MCI) is recalling certain 2017-2020 J4500 motor coaches. The coolant hose may fail, resulting in a low coolant warning followed by an engine shut down sequence, as well as the potential for engine coolant spilling on the roadway.
The risk
The spilled coolant may increase the risk of a crash. Additionally, transferring passengers from the disabled bus can increase their risk of injury.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
MCI will notify owners, and dealers will replace the coolant hose, free of charge. The recall began October 30, 2020. Owners may contact MCI customer service at 1-800-241-2947. MCI's number for this recall is SB 486.
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.
Affected vehicles
Related recalls
More MCI J4500 recalls
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- 2025 MCI D4520 and 4 other models — Emergency exit label may be placed in the incorrect location
- 2019–2021 MCI D45CRTLE and 2 other models — Vehicle's rear lighting may be obstructed when bikes are…
- 2021 MCI D4000 and 7 other models — Fuel tubes between the fuel rail and the injectors for…
- 2018 MCI D4000 and 8 other models — Main Distribution Panel (MDP) located within the battery…
Other campaigns involving MCI vehicles
Source: NHTSA recall database, campaign 20V526000 (manufacturer number SB 486). Data last verified Jul 30, 2026.