lolder Report post Posted February 11, 2015 (edited) It appears that there are two sections to that radiator; the upper half for the electric powertrain cooling which uses coolant fluid and the lower half for the transmission fluid ( oil ) cooling. It is of interest why Ford didn't worry about transmission fluid cooling/circulation in the HEV while towing and yet did in the PHEV EnergI under normal operation. The electric powertrain would not need much cooling while towing but one would think the transmission fluid circulation should be the same because all the same gears and bearings are turning. We don't know enough about this yet but three transmission failures on this forum are three more than I would expect. There were a number of failures in 2004+ Ford Escape hybrids most attributed to a faulty motor electronics coolant pump which caused "Pull over Now" warnings. Edited February 11, 2015 by lolder Quote Share this post Link to post Share on other sites
Texasota Report post Posted February 11, 2015 We don't know enough about this yet but three transmission failures on this forum are three more than I would expect.Three transmission failures is a concern but I don't think we can conclude that there is a pattern yet. At least there does not appear to be the widespread discussion/documentation on failures like there is for the Focus/Fiesta dual-clutch transmission. It would be interesting to know what the failure rate for our eCVTs is compared to that of the traditional 6-speed transmissions in the gas fusions. 1 GrySql reacted to this Quote Share this post Link to post Share on other sites
lolder Report post Posted February 11, 2015 Aside from the failures of the Escape transmissions due to the coolant pump, failures have been almost non-existent. There have been some "Pull over now" instances but they did not require a transmission replacement. I have been on this and other Ford hybrid forums since 2009 and I cannot recall another instance of the 2010+, 2013+ hybrids having these problems until now.We are the canary in the coal mine here. 2 GrySql and hybridbear reacted to this Quote Share this post Link to post Share on other sites