MINI Cooper Countryman 2011–2013 — technical service bulletin
Bulletin M170412 · NHTSA communication 10150349 · issued Oct 1, 2012
Technical service bulletin
communication type
Engine and Engine Cooling
component
2011–2013
model years
5
vehicle entries
Official summary
"Service Action: Retrofit of the Engine Coolant Temperature Sensor. Internal corrosion could form in the engine coolant temperature sensor. This corrosion leads to internal bridging of the contacts, which can cause an inaccurate engine temperature reading. This false reading could lead to difficulty in the engine starting and/or a ""Service Engine Soon"" lamp being illuminated."
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.