zharry Posted July 25, 2015 Report Share Posted July 25, 2015 Has anyone notice a decrease in MPG after the 15B04 recall that reprogrammed the battery electronics? I had been getting 46 mpg but with two fill ups down to 39 mpg. Ideas? zharry Quote Link to comment Share on other sites More sharing options...
raadsel Posted July 25, 2015 Report Share Posted July 25, 2015 Mine has been down but I can't say that the 15B04 effected it. Based on the types of trips I've taken, as well as how hot it has been (feel like temps have been over 100 everyday), the difference is likely for those reasons. Quote Link to comment Share on other sites More sharing options...
Kelleytoons Posted July 25, 2015 Report Share Posted July 25, 2015 It's possible it's just now more accurate (most folks have said the actual gauge "off" when compared to the real mileage found by measuring gas at fillups). That's assuming you're talking about the gauges themselves. Quote Link to comment Share on other sites More sharing options...
obob Posted July 26, 2015 Report Share Posted July 26, 2015 Has anyone notice a decrease in MPG after the 15B04 recall that reprogrammed the battery electronics? I had been getting 46 mpg but with two fill ups down to 39 mpg. Ideas? zharry Just a long shot but did you get new tires around the same time? New tires, even the same kind, have higher rolling resistance and a greater circumference which will lower car calculated mpg. I do not have a noticeable drop. Robert Fugate 1 Quote Link to comment Share on other sites More sharing options...
Robert Fugate Posted July 26, 2015 Report Share Posted July 26, 2015 (edited) I'm surprised no one, even on other forums don't question the gasoline quality. From different times of the year summer/winter blend to percentage of ethanol. That's not counting are you actuality getting a full gallon 100% from the pump instead of maybe 97%? Edited July 26, 2015 by Robert Fugate Quote Link to comment Share on other sites More sharing options...
hybridbear Posted July 26, 2015 Report Share Posted July 26, 2015 Any reprogramming of the PCM clears out the stored values in the tables that control vehicle operation. It takes up to 1000 miles for the car to relearn your driving style & behavior. Jus-A-CMax and bemyax 2 Quote Link to comment Share on other sites More sharing options...
Robert Fugate Posted July 26, 2015 Report Share Posted July 26, 2015 (edited) Do you have an article on this about needing to relearn your driving style & behavior? The PCM makes sure your engine is running at it's most efficient for emissions, and electric motor operation. https://en.wikipedia.org/wiki/Powertrain_control_module Edited July 26, 2015 by Robert Fugate Quote Link to comment Share on other sites More sharing options...
nsteblay Posted July 27, 2015 Report Share Posted July 27, 2015 I had the update and haven't noticed any differences.Your fluctuations in MPG are probably related to something else. My CMax has a 44.2 average so far for the year - 13,200 miles of mostly work commuting (mixed congested freeway and city driving). My velocity is average traffic speed. Jan 39.1Feb 39.1Mar 42.7Apr 48.6May 48.2Jun 49.0Jul 46.9 Temperature and type of trips are the big differentiator. In winter heater causes engine to run more and I lose mileage. In heat of summer air conditioner impacts but not nearly as much as the heater in winter. Pure freeway driving with minimal stop and go reduces mileage significantly, so long trips at consistently higher speeds have an impact. I use the Automatic OBD reader for my gas mileage readout - every trip I take is tracked. ptjones 1 Quote Link to comment Share on other sites More sharing options...
raadsel Posted July 27, 2015 Report Share Posted July 27, 2015 Do you have an article on this about needing to relearn your driving style & behavior? The PCM makes sure your engine is running at it's most efficient for emissions, and electric motor operation. https://en.wikipedia.org/wiki/Powertrain_control_module It made sense to me when I heard it because my car "forgot" my EV+ locations. I saw EV+ today for the first time since I had the update done a week ago. Quote Link to comment Share on other sites More sharing options...
raadsel Posted July 27, 2015 Report Share Posted July 27, 2015 It's possible it's just now more accurate (most folks have said the actual gauge "off" when compared to the real mileage found by measuring gas at fillups). That's assuming you're talking about the gauges themselves. I filled up today and my mpgs seemed slightly better than normal (maybe 1 mpg), compared to what I've previously gotten at fill up. The one difference today, my computed mpg was only about .5 mpg lower than what the dash read which, if future fill ups stay consistent, would be more accurate than normal. The key here is that it would need to stay this way over the next few fill ups to be meaningful. One difference I am noticing is that I kick into EV mode with less of a battery charge. I'm not sure if this is a programming difference or just from having the "user driving style" reset. Quote Link to comment Share on other sites More sharing options...
jcwcmax Posted July 28, 2015 Report Share Posted July 28, 2015 Yup, me too. After the recall update, I went from a steady 42.5 avg to 41.7. They must have changed the algorithm to reflect more accurate usage. Average daytime temps in Phoenix have been steady at 105 to 109, so weather conditions didn't affect it. After the update the dash did not reset the avg. mpg, to zero, nor did it seem to fluctuate until after driving the car after the update. As a side note, the ECO cruise control also seemed to change, seemingly becoming a bit more aggressive on acceleration. I drive very fixed routes to and from work and have noticed this, as its' invariably set to 45 mph cruise speed. Quote Link to comment Share on other sites More sharing options...
pomtrey Posted August 1, 2015 Report Share Posted August 1, 2015 yes both my husband and i notice a difference in mileage. we've had our car since December 2012 and do mostly city driving. initially we got 44ish in the city and less on the highway. now it's the complete opposite--we struggle to get 38 city and get 42-44 highway. it's frustrating; nothing else has changed, just the recalls. i feel the algorithm has changed to favor highway driving since most people seem to have complained about that early on. would love our old city mileage back. Quote Link to comment Share on other sites More sharing options...
Kelleytoons Posted August 2, 2015 Report Share Posted August 2, 2015 I certainly hope this isn't the case -- it doesn't make much sense they would tweak the car in any way to change the mpgs (although the more I hear about this "fix" the less likely I am to do it. I still am of the "ain't broke don't fix it" school). Quote Link to comment Share on other sites More sharing options...
jcwcmax Posted August 4, 2015 Report Share Posted August 4, 2015 Me too, dropped from 42.6 AVG to 41.7 after update....same daily route, no variables in daily driving, They must have tweaked the algorithm that works out mpg to make it more realistic. Quote Link to comment Share on other sites More sharing options...
stevedebi Posted August 4, 2015 Report Share Posted August 4, 2015 Me too, dropped from 42.6 AVG to 41.7 after update....same daily route, no variables in daily driving, They must have tweaked the algorithm that works out mpg to make it more realistic.I don't know. Honda got dinged big time for their "fix" to the Civic hybrid. The batteries were wearing out too fast, so they tweaked the algorythms such that it got less MPG, but longer battery life. Unlike your experience, it was a very big hit as I recall. I'm not saying Ford did this, but it is a possibility. Quote Link to comment Share on other sites More sharing options...
C-MaxSea Posted August 6, 2015 Report Share Posted August 6, 2015 (edited) Nope: Definately no drop from 46 to 39. We have not 'seen' any drop in mpg's; still getting 45-50+ on all our trips. A more 'realistic' gauge reading, a possibility, we will all see as we compare the 'Trip 1 or 2' (Tank) dash reading with our fill-ups. Nick Edited August 6, 2015 by C-MaxSea Quote Link to comment Share on other sites More sharing options...
DavidMBailey Posted August 6, 2015 Report Share Posted August 6, 2015 As I mentioned elsewhere, my 2013 SEL appears to be getting better mileage after the update. I haven't analyzed it closely, but it appears to be 5 mpg at 45 mph and 3 mpg on the freeway. Quote Link to comment Share on other sites More sharing options...
Jus-A-CMax Posted August 10, 2015 Report Share Posted August 10, 2015 No drop, if anything, slightly better with the EV. EV+ is the same...not that I am trying hard to clock those big tanks lately.. Quote Link to comment Share on other sites More sharing options...
revanoff2 Posted September 4, 2015 Report Share Posted September 4, 2015 How can I determine if the update has been applied? I've been searching (maybe not hard enough?) but have not found a way for me to determine whether it has been performed. Any help would be fantastic. On a separate note, my car finally learned what "home" is... saw EV+ for the first time yesterday. :yahoo: ~Revanoff~ Quote Link to comment Share on other sites More sharing options...
raadsel Posted September 4, 2015 Report Share Posted September 4, 2015 (edited) How can I determine if the update has been applied? I've been searching (maybe not hard enough?) but have not found a way for me to determine whether it has been performed. Any help would be fantastic. On a separate note, my car finally learned what "home" is... saw EV+ for the first time yesterday. :yahoo: ~Revanoff~ As far as I can tell, if you go to the Ford Owner website, under Service & Maintenance>Recalls, after entering your VIN, it will show you the recalls/service programs that are open for your vehicle. If the 15B04 Service Action isn't listed, then it is not "open"; which should mean it has been performed on your car. Edited September 4, 2015 by raadsel Quote Link to comment Share on other sites More sharing options...
WNY Posted September 5, 2015 Report Share Posted September 5, 2015 Since only purchasing the car 2 weeks ago, it had 3/4 of tank, finally did a fill up of 12.69 gallons, when the gauge read 18 miles to empty. They had not reset the trip previously, so I;m not sure the exactly mileage yet. But the AVG has been increasing slightly. the Avg. on the gauge was around 37mpg when i first got it. Everything was reset when they did all the updates at the dealership. It's avg. right now 39.4mpg and has been slowly increasing with mixed hiway/city driving. probably 80% hiway/20% city. Next tank will know much better, I know when I filled it up, it came back and said 525 miles to empty on the trip. So, if I figured 525 to empty / 12.69 gallons it took to fill it up, that comes out to approx. 41.4mpg. Mine has learned my home and work with the EV+ about 1/8-1/4 mile from the destination. Quote Link to comment Share on other sites More sharing options...
DaveofDurham Posted September 5, 2015 Report Share Posted September 5, 2015 As far as I can tell, if you go to the Ford Owner website, under Service & Maintenance>Recalls, after entering your VIN, it will show you the recalls/service programs that are open for your vehicle. If the 15B04 Service Action isn't listed, then it is not "open"; which should mean it has been performed on your car.I just went to the Ford Owner Website and entered my VIN. One action that I know I have not had done comes up with a red circle with an ! inside of it. Another action that I don't know if I have had done comes up with an orange circle with an ! inside of it. Anyone know what the orange circle means? Quote Link to comment Share on other sites More sharing options...
raadsel Posted September 5, 2015 Report Share Posted September 5, 2015 I just went to the Ford Owner Website and entered my VIN. One action that I know I have not had done comes up with a red circle with an ! inside of it. Another action that I don't know if I have had done comes up with an orange circle with an ! inside of it. Anyone know what the orange circle means? I've had a similar question but, as near as I can figure out, the red ones are actual recalls, ones where not having it fixed is considered a safety issue and the yellow are customer service programs, where it doesn't directly impact the safe operation. For example, the battery issue is an inconvenience, since the car may not start but does not impact the safety of driving the car. Quote Link to comment Share on other sites More sharing options...
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