2017 MCI J4500 Recall: Affected vehicles may experience a multiplexing programming error that…
NHTSA campaign 16V702000 · Service Brakes, Air · filed Sep 30, 2016 · verified Jul 30, 2026
The defect
Motor Coach Industries (MCI) is recalling certain model year 2017 J4500 motorcoaches manufactured March 14, 2016, to August 23, 2016. The affected vehicles may experience a multiplexing programming error that will not provide any visual or audible warnings if the vehicle's primary service brake air reservoir system has low pressure. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 121, "Air Brake Systems."
The risk
If the driver is unaware that the service brakes have low air pressure, the brakes may apply automatically, increasing the risk of a crash.
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 correct the programming of the multiplexing system, free of charge. The recall began on October 18, 2016. Owners may contact MCI customer service at 1-800-241-2947. MCI's number for this recall is SB 439.
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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Other campaigns involving MCI vehicles
Source: NHTSA recall database, campaign 16V702000 (manufacturer number SB 439). Data last verified Jul 30, 2026.