I own 2008 F250 with a 5.4 Triton. The unit has 55000 Km on it. About a month ago the wrench symbol showed up on the dash display, it stayed on for about 5 minutes and then it went out. I checked for error codes and there were none. I read the manual and it said if it goes out basically don't worry about it. This evening I was out with the unit and the symbol came on again and you could feel that the truck went into a different operating mode, this time it stayed on for about 30 seconds and again it went out. Again I checked for an error code, again none showed up, however I may have been to late as the symbol had been turned off.
I tow a 5th wheel and this concerns me as I do not want it to go into limp mode for an unkown reason.
Have any of you folks any ideas as to why this is happening