Mazda MAZDA6 2018–2019 — technical service bulletin
Bulletin 01-023-19-3648 · NHTSA communication 10169538 · issued Dec 17, 2019
Technical service bulletin
communication type
Equipment
component
2018–2019
model years
2
vehicle entries
Official summary
Some vehicles may exhibit engine overheating with one or more of the following symptoms: ï · â  EXCESSIVE ENGINE TEMPERATURE: ENGINE OUTPUT WILL BE LIMITEDâ  displayed in the instrument cluster ï · Red overheating indicator illuminated ï · Engine temperature gauge reading in the red zone (260à °F / 126à °C or more) NOTE: This condition usually happens when the vehicle is in stop and go traffic. This is caused by the cooling fan not running properly due to improper control software of the Powertrain Control Module (PCM), resulting in high coolant temperature. To correct this is
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.