You can purchase an OBD-II device, which will report the engine RPM, but your Clarity has no way to display that number.On a side note, is there anyway to check engine RPM while driving?
You can purchase an OBD-II device, which will report the engine RPM, but your Clarity has no way to display that number.On a side note, is there anyway to check engine RPM while driving?
Another point for MM. I had my MM popped up last week stating A1 is needed soon (4 weeks to next service) at 6500 miles. I had my tires rotated at a friend's garage and reset the 1, checking the MM again shows 5 months which also corresponding to 12 months since I bought the Clarity. It does look like the A is shown every time there's a need for other services (like "1" for tire rotation). So if you do this, no need for oil change so early (I only had 20 gallons burned).
I don't think from what I've read here that it takes work load into account at all. My first reminder just came on at 6000 miles and I run on HV three fourths of the time. Others who have burned just a tank or two of gas say theirs also came on at 6000 miles.However, the algorithm seems to take into account the running time, work load history, and temperature history of the ICE as well as trying to minimize dealer service instances. The one year change interval, even with very low miles, is not unreasonable at all.
LeoP
The conjecture that the MM "A" value comes on when any other service is needed (the numbered services) is supported by some other posts to this forum. I suspect that the tires need rotating every 6000 miles as on other Honda's (with specific tire rotation mileage requirements). So when the tires need rotating, the MM also shows an "A". Others have just rotated the tires and reset only the "1". Then the MM often went off and the next service time often then showed a one year time from the last oil change (for those that drive mainly in EV mode).
The recent post in another section of this forum links to an SAE article specifically about the Clarity. In that article, the BSFC (brake specific fuel consumption ) is said to be calculated by the PCU to optimize that parameter of engine operation. The BSFC is calculated from the ratio of the fuel consumption rate to the power produced by the engine at any given time. The power produce is the engine workload (the power can be calculated from the engine rpm - air flow rate - VTEC settings- ignition timing - plus others mapping table if there is not a torque sensor in the power train). It is not unreasonable to think the the Honda engineers use this work load history for MM calculations (as is done and documented in the oil change monitoring by other manufactures).
LeoP
The conjecture that the MM "A" value comes on when any other service is needed (the numbered services) is supported by some other posts to this forum. I suspect that the tires need rotating every 6000 miles as on other Honda's (with specific tire rotation mileage requirements). So when the tires need rotating, the MM also shows an "A". Others have just rotated the tires and reset only the "1". Then the MM often went off and the next service time often then showed a one year time from the last oil change (for those that drive mainly in EV mode).
The recent post in another section of this forum links to an SAE article specifically about the Clarity. In that article, the BSFC (brake specific fuel consumption ) is said to be calculated by the PCU to optimize that parameter of engine operation. The BSFC is calculated from the ratio of the fuel consumption rate to the power produced by the engine at any given time. The power produce is the engine workload (the power can be calculated from the engine rpm - air flow rate - VTEC settings- ignition timing - plus others mapping table if there is not a torque sensor in the power train). It is not unreasonable to think the the Honda engineers use this work load history for MM calculations (as is done and documented in the oil change monitoring by other manufactures).
LeoP
I know that I read somewhere on a Honda website (not Clarity specific) that the MM will try to aggregate sevices in order to reduce the number of service visits (and increase dealer profit?). This is supported by several posts that showed oil change intervals lengthened when tire rotation interval was reset. I think that’s pretty good proof.LeoP
So what explains the variability of the MM if it is set to remind folks to do a tire rotation at x miles? Owners report approx range of 6000 to 7500 miles when the MM light comes on?
Other than odometer miles...what can the computer cipher on to recommend tire rotations...total revolutions? lol
Since I am brand new to Honda...how does the MM work in traditional ICE vehicles? Does it recommend tire rotations and oil changes at the same time as well?
Hard for me to connect the dots for the argument Honda makes a recommendation for tire rotation then, well you're at it...we suggest you change the oil too?
Inquiring minds.
I know that I read somewhere on a Honda website (not Clarity specific) that the MM will try to aggregate sevices in order to reduce the number of service visits (and increase dealer profit?). This is supported by several posts that showed oil change intervals lengthened when tire rotation interval was reset. I think that’s pretty good proof.
You can purchase an OBD-II device, which will report the engine RPM, but your Clarity has no way to display that number.
Look on the black info panel on the driver's door opening. Our Clarity was manufactured in October, 2017:Never figured out my manufacturing date.