Our ECUs do not have a known issue with caps, BUT there is a well documented issue with 8 diodes on the PC board, If any one of the diodes fails it will fry the main processor and since that processor is a programmed chip and there is no access to the program on it, it is then irreparable. The diodes give no warning of getting ready to fail. The diodes fail due to corrosion, they can be visually inspected, if they show any corrosion they need to be replaced ASAP. This is not a difficult repair to do, but every first gen should have it done to prolong the life of the ECU.