One problem related to water pump has been reported for the 2012 Ford F-250. The most recently reported issues are listed below.
Red fluid found on garage floor. I took my truck in and Ford could not find any leak. Within a week later I took it back and showed them where it was leaking. Ford brought the master mechanic over and they determined that it was something loose on the right side up high they did not tell me what it was. Within a couple of weeks I took it back again and they determined the water pump was leaking they had the truck for 3 days. After picking up my truck within 200 feet from the Ford dealer the low power illuminated and the engine symbol lit up. They 1st told me they would have to take the top of the engine off to check it out. A hour passed and I got called and told it was the diesel fuel was gelling up and they would have to put a additive in the fuel and that I should add it again every other tank of fuel.