One problem related to cruise control has been reported for the 2010 Infiniti EX35. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2010 Infiniti EX35 based on all problems reported for the 2010 EX35.
My brand new Ex35 infinity adaptive and standard cruise control ("acc")crashed (quit working) on me 4x in the first 2 months I owned the car. In addition during that period when the adaptive cruise control worked, it did not work fully or properly. Finally, Infiniti declared a recall for the crashing acc and purportedly "fixed" it on 01/20/10. However, after the "fix" it became evident that a safety warning feature of the that chimes and flashes when another car cuts in between you and the car in front. This feature existed on the 2010 Ex35 before the "fix", is described in the Ex35 manual and worked on my previous car (a 2008 fx35) that had acc. Infiniti's response is that this feature is no longer part of the system and if the manual states otherwise, their 2010 Ex35 manual is wrong.