Although electrolytic capacitors are prone to drying out over time, the usual cause of intermittent cruise function is cracked solder connections at other capacitors. These are the red and green rectangular ones in the photo. Cracks are only visible under a magnifying glass once the conformal coating has been removed. Some people have resoldered the whole board but have not added fresh solder only to have the problem reappear at a later time or have not removed the conformal coating and end up with contaminated joints.