Ford Transit 2015–2019 — technical service bulletin
Bulletin SSM 48543 · NHTSA communication 10171949 · issued Feb 12, 2020
Technical service bulletin
communication type
Engine and Engine Cooling
component
2015–2019
model years
5
vehicle entries
Official summary
SSM 48543 - 2015-2019 Transit - 3.2L Diesel - Overheat Due To Coolant Loss Without An External Coolant Leak Some 2015-2019 Transit vehicles equipped with a 3.2L diesel engine may exhibit an overheat condition due to coolant loss without any external coolant leaks. This may be due to an internally leaking exhaust gas recirculation (EGR) cooler. To correct this condition, install revised EGR cooler CK4Z-9U433-B. Refer to Workshop Manual (WSM), Section 303-08. Use causal part 9U433 and applicable labor operations from Section 09 of the Service Labor Time Standards (SLTS) Manual.
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.