Throttle Control Warning Light On problems of the 2012 Ford Fiesta

Multiple problems were reported to me by the dealer as potentially being the cause when I took the car in for loss of power while driving, intermittent check engine light and wrench light along with shuddering in the transmission while driving. The dealer replaced (for the second time in 12-months) the clutch assembly, the seals, the clutch release lever and the clutch slave but stated that while the throttle body was bad and in need of replacement, the problem was not caused by the clutch nor did it contribute to the clutch problem and would not be covered by the extended Ford warrantee of the clutch. I had taken the car in with the same issue several months back but, because the check engine light was not on at the time, they dismissed the issue as normal functioning of the clutch. The same issue was the cause for the initial clutch assembly replacement a year ago. I plan to pursue the issue of the throttle body with Ford in light of the fact they are acknowledging and taking ownership of etb issues with 1. 6m other Ford models in the same production period.