When the shift lever is in D3 and sport mode is selected the transmission may downshift unexpectedly when the throttle is depressed. Our technicians tell us there is a transmission control module (TCM) software update available to correct this concern.
Unwanted transmission downshifts on Hyundai Genesis Coupe 3.8
Average mileage: 60,000 (60,000–60,000)
1 model year affected: 2010
3 people reported this problem
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Unexpected downshifting leading to gears being unusable to no transmission at all.
the car will abruptly downshifts.