I tried to search MDS or eco mode but nothing came up but in reality I know this must have been covered before. When I first got the truck in June it had 12k miles on it. Now I have 17k and before about 3 weeks ago I rarely if ever saw eco light on. Now it’s on all the time while cruising. Let’s say I’m going 35mph and the trucks in 6th and eco mode. The problem is I feel a slight hesitation coming out of eco mode it’s almost a little shutter and it sounds like it’s lugging the truck down. I’m not sure what to make of it. The trans seems to also be slow downshifting in this same time frame if that makes sense. I’ll come to a slow stop and still be in like 5th gear at 10mph then when I go to accelerate I feel it hard upshift to 3rd after a slight lag. Not sure what’s happening but it just started all this a few weeks ago. What’s y’all’s opinion is it the truck just getting a little more broken in? Seems weird to me might be a dealer trip
On when MDS works / ECO lights, posted this a bit ago
ECO is MDS, and comes on as follows:
- engine reaches operating temp
- tow haul is off
- no gear limit is set
- load is less than 25%, is in gears 4-8 and RPMs > 1000 (or something like that)
- stays on until load exceeds 50%, RPM drops to <1000, etc
- comes back on when load remains less than 25% for at least four seconds straight
Load is as the ECU measures it, and is reported on OBD2, CAN. Load is also RPM sensitive, not a measure of how much you‘re pushing the gas pedal.