RAM 1500 2021 — technical service bulletin
Bulletin S2108000190 · NHTSA communication 10219964 · issued Aug 17, 2021
Technical service bulletin
communication type
Lane Departure
component
2021
model years
1
vehicle entries
Official summary
Temperature Gauge Running Hot, Engine Cooling Warning Lamp On, Cluster Chime For The Condition, Radiator Cooling Fan Does Not Turn On
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.