Honda Civic 2017 — technical service bulletin
Bulletin A17-020 · NHTSA communication 10098843 · issued Apr 5, 2017
Technical service bulletin
communication type
Engine and Engine Cooling
component
2017
model years
1
vehicle entries
Official summary
Service bulletin - the 3-way coolant joint was manufactured incorrectly and may be blocked internally. If the joint is blocked, a technician will not be able to fill the cooling system properly.
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.