Chrysler 300M 1998–1999 — technical service bulletin
Bulletin 240698 · NHTSA communication 601684 · issued May 22, 1998
Technical service bulletin
communication type
Visibility
component
1998–1999
model years
7
vehicle entries
Official summary
Automatic temperature control (atc) system, if left in "auto" mode when the ignition is turne doff, occasionally revers to "manual" mode when the ignition is turned back on. *ak
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.