EnergiCCAATS Posted December 19, 2014 at 03:10 PM Report Share Posted December 19, 2014 at 03:10 PM Had Ruby serviced for first time yesterday. Was at 11,000 miles, and oil life still had 48% but check engine light was on. Had 39.95 oil change, tires rotation, multi-point inspection done and dealer found an emissions related sensor bad (vapor pressure sensor I think?). The ticket says they reprogrammed the PCM and replaced the bad sensor. My question is, could the reprogramming of the PCM/replacing the sensor have caused the calculated battery only range to "reset" to a default value of 21 miles max on full charge? We have been averaging 26-30 miles on a full charge the last couple of months (colder weather). We averaged 30-35 in the summer months. The first thing I noticed was that when I dropped it off, I had 19 miles range remaining and when picked up had only 13 miles range, but they didn't drive it anywhere but in the service bay. I assumed it could have just drained during service if they left the power on etc, but when fully charging at home last night, the full battery now only indicates 21 miles total range. Quote Link to comment Share on other sites More sharing options...
murphy Posted December 19, 2014 at 03:39 PM Report Share Posted December 19, 2014 at 03:39 PM Reprogramming the PCM clears a lot of data values. I had to comletely reconfigure my left screen after the PCM was reprogrammed. The car would have had to be turned on to do the reprogramming. Was the heater on the whole time? That would put a dent in the battery. Hybridbear and jeff_h 2 Quote Link to comment Share on other sites More sharing options...
EnergiCCAATS Posted December 19, 2014 at 03:52 PM Author Report Share Posted December 19, 2014 at 03:52 PM I didn't have the heater on when I dropped it off, but they may have turned it on. I am going to assume the reprogramming "unlearned" my wife's very conservative driving habits (and hence high average battery range). Hopefully it will increase after she drives it a few times. Quote Link to comment Share on other sites More sharing options...
jeff_h Posted December 19, 2014 at 04:12 PM Report Share Posted December 19, 2014 at 04:12 PM Check the driving score of your first trip after the PCM update, I think it will be pretty low as thing start to get re-learned, as murphy notes above. Quote Link to comment Share on other sites More sharing options...
JATR4 Posted December 19, 2014 at 05:46 PM Report Share Posted December 19, 2014 at 05:46 PM (edited) The battery indicator has no effect on the range you get when you or your wife actually drive the car. It is only an estimate based on past driving. If the battery is fully charged and indicates 19 you can still get a range of 30 depending on your driving. Conversely, if you drive like a bat-out-of-hell you may only get 10 miles before the battery is depleted--even if the battery indicated 19 when fully charged. Edited December 19, 2014 at 05:47 PM by JATR4 Quote Link to comment Share on other sites More sharing options...
jeff_h Posted December 19, 2014 at 09:51 PM Report Share Posted December 19, 2014 at 09:51 PM The battery indicator has no effect on the range you get when you or your wife actually drive the car. It is only an estimate based on past driving. If the battery is fully charged and indicates 19 you can still get a range of 30 depending on your driving. Conversely, if you drive like a bat-out-of-hell you may only get 10 miles before the battery is depleted--even if the battery indicated 19 when fully charged. This is true, but I think the PCM update also has an effect. When I was getting my car done I was in the waiting room on laptop on MFM and it said 18 miles remaining on HVB, and then when I checked it again a few minutes later (car had not driven anywhere, odometer only changed 1/10 mile on service visit) it said 12 miles (most it has ever dropped due to HVAC has been 3 miles, so no I don't think that was it)... sure made me do a double-take when I saw the update on MFM. Hybridbear 1 Quote Link to comment Share on other sites More sharing options...
rbort Posted December 19, 2014 at 11:25 PM Report Share Posted December 19, 2014 at 11:25 PM If they disconnect the 12v battery during the service you start over fresh like a new car. The coach bars in this case would be full empty and the range at 20 miles. -=^Raja. Quote Link to comment Share on other sites More sharing options...
JATR4 Posted December 19, 2014 at 11:54 PM Report Share Posted December 19, 2014 at 11:54 PM This is true, but I think the PCM update also has an effect. When I was getting my car done I was in the waiting room on laptop on MFM and it said 18 miles remaining on HVB, and then when I checked it again a few minutes later (car had not driven anywhere, odometer only changed 1/10 mile on service visit) it said 12 miles (most it has ever dropped due to HVAC has been 3 miles, so no I don't think that was it)... sure made me do a double-take when I saw the update on MFM.Even with the update it shouldn't matter what the battery indicator says. If the battery is fully charged you should get a range based on how you drive. It could read 12 and you could get 25 or it could read 25 and you could get 12--or any number. Your range on a fully charged battery is dependent only on how you drive, what accessories you use, and the weather. It appears that the update erases previous memory but that shouldn't affect the actual range you get with a fully charged battery--even if the indicator is different than prior to the update. I expect the actual range of the battery to decrease--no idea how much--as the battery ages. Quote Link to comment Share on other sites More sharing options...
EnergiCCAATS Posted January 13, 2015 at 08:29 PM Author Report Share Posted January 13, 2015 at 08:29 PM After over 3 weeks have passed, it really hasn't improved any. I can only guess the "timing" just hit of consistently colder weather, but still don't understand why it was averaging 26-30 (on the display/MFM and actual driving) and now my wife says the best she has gotten is 22, and lately even lower (like today she only got about 15 - same exact route she has always taken to work, and she used to always consistently make it the 21 miles with miles to spare on the indicator). Really hope the dealer didn't completely screw something up. Quote Link to comment Share on other sites More sharing options...
EnergiCCAATS Posted January 13, 2015 at 08:30 PM Author Report Share Posted January 13, 2015 at 08:30 PM On another note.....my GMC Acadia was totaled last week when I was rear-ended by a utility/bucket truck. Seriously thinking about getting a FFE myself. Quote Link to comment Share on other sites More sharing options...
Rexracer Posted January 14, 2015 at 04:14 PM Report Share Posted January 14, 2015 at 04:14 PM After over 3 weeks have passed, it really hasn't improved any. I can only guess the "timing" just hit of consistently colder weather, but still don't understand why it was averaging 26-30 (on the display/MFM and actual driving) and now my wife says the best she has gotten is 22, and lately even lower (like today she only got about 15 - same exact route she has always taken to work, and she used to always consistently make it the 21 miles with miles to spare on the indicator). Really hope the dealer didn't completely screw something up. As JATR4 said, it doesn't matter what the meter says, what is she actually achieving? Was she actually going 26-30 miles on a charge, and now she is only going 15 in the same driving? The big one, is she running the heater now, and before she wasn't I can cycle my heat on off and go from 22-24 down to 14-16. If you do look for another Energi, look used. I have seen SE's in the NW for 21-23 with 10-20k miles on them. Thats a lot of savings. And as a friend pointed out, you can get a Leaf for 11k with 28k miles on it also. Even if you got another SUV, if you do any amount of driving each day, putting the miles on a Leaf would be handy. Quote Link to comment Share on other sites More sharing options...
lonzo71 Posted January 14, 2015 at 06:42 PM Report Share Posted January 14, 2015 at 06:42 PM Personally, I think it was a combo of things, with weather being the biggest. I wouldnt worry about the dealership doing something wrong by now since its been a few weeks. Same thing happened to me, they did an reinstall or something to the emission and everything was like new. Now thats its winter, you wont see those numbers till spring. Using the heater just kills the numbers in half! or close to it, it seems... Quote Link to comment Share on other sites More sharing options...
EnergiCCAATS Posted January 23, 2015 at 03:25 AM Author Report Share Posted January 23, 2015 at 03:25 AM Well, yesterday (the day I picked up my new Energi) she was back up to 30 miles elec range, so everything seems to be back to learning her driving. Either that, or Ruby sensed the new dog about to be in town and wanted to "show out"....lol. Quote Link to comment Share on other sites More sharing options...
Fat Fusion Posted January 23, 2015 at 04:00 AM Report Share Posted January 23, 2015 at 04:00 AM Glad it's all worked out. The guys above covered anything I would. Quote Link to comment Share on other sites More sharing options...
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