Pinpoint Test D : Engine Coolant In The Transmission Fluid

WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

Normal Operation and Fault Conditions
- Transmission fluid warmer internal leak (for Raptor and vehicles equipped with the 3.3L Duratec - V6)
  - INSTALL a new transmission fluid warmer. REFER to: Transmission Fluid Warmer - Raptor . REFER to: Transmission Fluid Warmer - 3.3L Duratec-V6 .
  - CARRY OUT the necessary repairs for a Water in Transmission Fluid concern. For 6-Speed Automatic Transmission, REFER to: Preliminary Inspection . For 10-Speed Automatic Transmission, REFER to: Preliminary Inspection . For 6-Speed Automatic Transmission, REFER to: Transmission . For 10-Speed Automatic Transmission, REFER to: Transmission .
- Transmission fluid cooler internal leak (for all other vehicles)
  - INSTALL a new transmission fluid cooler. REFER to: Transmission Fluid Cooler - 2.7L EcoBoost (238kW/324PS)/3.5L EcoBoost (272kW/370PS)/5.0L 32V Ti-VCT . REFER to: Transmission Fluid Cooler - 3.0L Power Stroke Diesel .
  - CARRY OUT the necessary repairs for a Water in Transmission Fluid concern. REFER to: Preliminary Inspection . REFER to: Transmission .
Possible Sources
- Transmission fluid warmer
- Transmission fluid cooler
Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods