MCI J4500 2026 — technical service bulletin
Bulletin ITS61573 · NHTSA communication 11037435 · issued Sep 14, 2026
Technical service bulletin
communication type
Structure
component
2026
model years
1
vehicle entries
Official summary
Instructions to clean and treat rusted surface on specific tubes showing rust on bottom of the center chassis.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.