My 2020 has the Auto Stop/Start and on a recent trip to Kansas I noticed that the hours continue to rack up on the tripometer even with the engine off via the Auto S/S.

I monitored it during the trip and I am almost positive that the engine hours continue to accumulate even with the engine off. I know it could not amount to a significant amount short term, but in the long run (I usually keep a truck 6-8yrs, last one was 6yrs and the previous was 11yrs) I think it could make a difference in resale value.

My questions are, are the engine hours/idle hours controlled by the ignition switch or are they controlled by the ECM only when the engine is actually running? What controls the engine/idle hours? What controls the tripometer hours?

I used the search function and found nothing using the terms I thought would give me some hits, just using hours I got way too many hits that had no relevance, so if this has been answered, I apologize and would appreciate a link to the previous discussion.

 

Never really thought about it but, engine hours would be a good indication of how the truck was driven or how it was used. I would think twice about buying a used vehicle with 20k miles and 4k hours engine time.

I don't think there is much to worry about with resale. I bet most people would just look at the mileage with a used vehicle.

Would be interesting to know what the average mileage / engine hours numbers are. Probably varies by a wide margin regionally.

 

Engine idle is a little deceiving as it is also accounting for all the electronic systems that are used to run the engine. Those remain energized when the vehicle is powered, even when the engine isn't running.

I would not suggest worrying about it. Almost no one has any idea what is a good ratio for the hours, and those that have a clue are going to **** bricks because they are thinking more along the lines of what they see in their lawnmower (very low) or backhoe (very high).