It won't, mine has not been tracking tank averages ever since I set mine to automatically reset Trip A with each fill-up. It's been one of the 3 things on my list for the dealer to address with the first service visit.My numbers lost their average fuel stats too, when I changed that setting to make Trip A reset automatically after each fill-up. After getting gas it reset ok, but the history looks like that on mine too now. Still waiting to have to fill up again to see if this first full tank "sticks".
1st time I've seen this written in a long time - we've been resetting BMW's for years doing this...like a big CTRL-ALT-DELETE for the car - works every time...every tech I know has a 16 gauge wire with two alligator clips at the ends hanging from his snap-on box for this...looks like a software glitch.
if this car rolled in my bay like that i would start with disconnecting the positive and negative battery terminals, removing them from teh battery and holding them together for about a minute. this will drain all the capacitors in the vehicle, effectively resetting everything. then i'd go on a road test to see how it is.
WOW, great catch,..I'll try this on my next fill up and report back. I really hope this is it.My '13 LX was doing the same thing. On the last two fills it wouldn't drop down the mpg data. Only the miles. I have it set to reset A after refuel.
What I had done on the first two was just start the car right up. It would reset just the miles.
What I did last time was turn to ACC then let it load. Then to ON for a few seconds. It won't set yet. Then start. It registered the miles and mpg from previous tank and dropped them down.
Yeah, it's a bugger and something Honda needs to fix. I make sure the key is out when I refuel. When your done switch to the first position and wait five or ten seconds, then to the next position for 5 or 10 seconds, then start. See if that does it for you and let us know.Sorry to resurrect this thread. I have the Canadian EXL and I'm having a worse time with trip reset.
Trip A is set to reset after refuel like everybody else.
After refuel, start engine right away, trip is reset but history is not updated.
Another refuel, turn to ACC then ON (until it displays trip A), start engine. Same thing, trip is reset but history is still not updated.
If I press and hold the reset rod, it behaves well. Trip reset and history updated.
Note I've only refueled my car twice. Maybe the behavior will change after a couple of times as suggested.