Is that 32 city-38 hwy calculated by checking the amount of gas you put in, then calculating the MPG?Rationally speaking, is that these cars sensors all rely upon one another. and when one fails eventually it will cause them all to fail due to the computer receiving bad
which would lead me to wanting to get rid of it.
Besides that, I have always kept my car's running smoothly without issue and not creating a headache for someone else if I ever sold it..... Currently I am averaging 32 city-38 hwy which isn't anything to sneeze at especially with the price of fuel nowadays.
Yes, and now that you know which components are involved in calculating the values you are concerned about you can narrow down which may be the possible culprit.The service Manuel states that it is calculated and displayed approx every 30 seconds....This is not being done, and therefore I am concerned because if the ECU doesn't get the correct information, then the information display is not going to be correct....potentially causing a response from the ECU in the fuel economy readout which is now showing that I am getting 32+MPG at 60 mph.
If you've scanned the ECM and ABS modules and there are no faults, then the issue is probably with the combination meter since it is responsible for taking the data from the ECM and ABS module and calculating/displaying the results you're looking at.yes I agree, my Murano get approx 350-425 mpg mostly hwy driving with 91 octane.
not concerned with the mpg actuality but just the readouts....the ECU or sensor is not allowing the readout to show as a 30 second updated interval as it should, I would think that the readouts on the LCD screens should all be reading close to the same info at any given moment. +/- 30 seconds
I have verified the large center screen (distance to empty) against the actual miles driven on the odometer and that reads and is calculating correctly.....it's only the center mini LCD that reads incorrectly as seen in the attached photo.....Note this photo was taken 20 mins after I was on the hwy at a red light, so the speedometer is correct.
forget city mpg. You can’t that on the highway. Best I’ve gotten is 25/26 and that’s if I reset it while on the highwayRespectfully, 32-38 MPG in city driving isn't happening with any Murano ever made.
If the gas gauge works, I'm not sure why running out of gas is a concern. You should use the gas gauge as your reference, not the average MPG reading or "Miles remaining."
That said, I understand why you'd like it to calculate correctly, which is obviously is not. I also can't tell you whether this is a gauge, sensor, or ECU problem. I tend to think of the ECU as a place to look.
There are others here who are better with the computer aspects of the Muranos. Hopefully they will join in.
Honestly, I doubt there is any fix on this. Its not an exact meter. It needs driving time to recalculate and readjust the readout. If you reset it and turn on your AC and see the reading, drive a mile and reset it and turn off your ac, the reading will change but not right away. So yeah, it'll drive you nuts unnecessarily. Its probably been like that ever since and you just happen to notice it now.If you've scanned the ECM and ABS modules and there are no faults, then the issue is probably with the combination meter since it is responsible for taking the data from the ECM and ABS module and calculating/displaying the results you're looking at.
I think what the other posters are getting at is that this kind of problem is more or less an example of the kind of nuisances that one might have to live with when owning a 10+ year-old car and in most cases it's not worth the time or money to fix it. But, if you're loosing sleep at night over this then by all means fix it.