[EQA-S.oz]

I am keeping a record of the energy consumption of my EQA250 in an Excel spreadsheet and one of the measures I record (for interest) is the Average Consumption "FROM RESET" in the Trip Data section of the Mercedes me app. (My "FROM RESET" is currently based on the total distance since new and I don't want to lose that information). My Average Consumption was sitting on around 23.9 kWh/100 km, but suddenly it has jumped to 99.9 kWh/100 km. I have no idea why. I also have no idea how to initiate the "FROM START" record - obviously a different set of parameters.

I would appreciate any insight to the operation of Trip Data within Mercedes me, as I can't find anything useful either in the Owner's Manual or online.

 

[FDR]

I am keeping a record of the energy consumption of my EQA250 in an Excel spreadsheet and one of the measures I record (for interest) is the Average Consumption "FROM RESET" in the Trip Data section of the Mercedes me app. (My "FROM RESET" is currently based on the total distance since new and I don't want to lose that information). My Average Consumption was sitting on around 23.9 kWh/100 km, but suddenly it has jumped to 99.9 kWh/100 km. I have no idea why. I also have no idea how to initiate the "FROM START" record - obviously a different set of parameters.

I would appreciate any insight to the operation of Trip Data within Mercedes me, as I can't find anything useful either in the Owner's Manual or online.

The Mercedes me trip data is not something I have previously paid much attention to but due to your post I had a look at it just now. Mine shows the ’FROM RESET‘ info in miles/kWh since new also (but hasn’t jumped to 99.9 yet!) maybe it’s like the trip meter on an analog speedometer which can only read up to say a four digit number then it has to start over again from the beginning? I think the ‘FROM START’ info on mine appears to be something that starts automatically when you start the car, as it gives figures for the last journey I made.

 

[Dar]

I am guessing the 99.9 FROM RESET is a software bug as I assume the figure hasn't been reset. It should hopefully return back close to last realistic value after a while. You could also check if Mercedes Me app shows different figure. FROM START is as FDR describes, from my experience. It's a bit confusing because the FROM START resets itself every journey, and FROM RESET is from the start day of driving the car (unless it is reset)

 

[EQA-S.oz]

Thank you for your responses, FDR and Dar.

I agree with your comments about the FROM START energy consumption monitor. My Mercedes me Trip Data page relative to that measure is also showing 99.9kWh/100 km so, as Dar suggests, a software bug may have affected this function.

I should have added that until recently I had been charging my EQA with the 240v mains charger supplied with the car and to err on the side of caution I set the charging rate to 6 amps.

I have recently installed a 16.28kW home solar system and 3 phase ZJBeny wallbox-type 'charger' and before using the 'charger' for the first time I set the charging rate (via MBUX) to 'maximum'. I'm not sure whether that was necessary in the context of using the wallbox-type 'charger' or if, indeed, it is relevant to my Trip Data issue. The higher capacity charger charged the battery at about 10 times the rate of the mains charger.

As I mentioned in my initial post, I don't want to reset my FROM RESET measure, but to avoid doing so inadvertently, does anyone know how to reset FROM RESET?

 

[Dar]

As I mentioned in my initial post, I don't want to reset my FROM RESET measure, but to avoid doing so inadvertently, does anyone know how to reset FROM RESET?

It seems to be missing in the EQA manual I have but if it is available, it likely works similar to EQC, which is reset in Trip Menu, accessed by swiping on the steering wheel's tiny touch sensitive square to control the screen behind steering wheel, as attached. I have never checked if it does reset though. BTW maximum amp is set on mine but I don't have 99.9 so unlikely that is reason for 99.9

 

[EQA-S.oz]

Thank you, Dar - that's helpful.

It's a pity the Owner's Manual isn't more comprehensive. As a general observation, it also appears to me that some of the intended meaning is lost in the translation from German into English.

I've found FROM RESET and FROM START on my dashboard screen and FROM RESET at that source is showing 23.9kWh/100 km, whereas on Mercedes me it is 99.9kWh/100 km. Clearly, something is awry with the Mercedes me interface. I think I'll leave it be and see if it sorts itself out in time.

 

[dBC]

Yeh, the two trip meters (FROM RESET and FROM START) behave almost identically. You can manually reset either of them by pressing the little black button while that trip meter is being displayed. A short press will prompt you if you want to reset, a long press will just go ahead and reset it.

FROM START auto-resets at the start of each journey. A new journey is declared after the vehicle has been parked for more than 4 hours. So a trip out to lunch, then to the shops, and then home will all count as one journey (i.e. no auto-reset).

I too keep a spreadsheet and use the FROM RESET tripmeter for each recharge. That kinda' mimics what I do in an ICE vehicle... I just need to remember to screenshot it, and reset it as I leave the service station / charging station.

99.9 is how it displays infinity. After a reset it has to start somewhere, and infinity probably makes sense since at that instant the divisor is zero (no kms travelled). My ICE vehicle does the same, only its version of infinity is 30L/100km. In both case, the minute the wheels start rolling, the consumption plummets down to something more reasonable because it's no longer dividing by zero.

 

[dBC]

I have recently installed a 16.28kW home solar system and 3 phase ZJBeny wallbox-type 'charger' and before using the 'charger' for the first time I set the charging rate (via MBUX) to 'maximum'. I'm not sure whether that was necessary in the context of using the wallbox-type 'charger'

Nice setup! At least in the EQC, that maximum charge rate only applies when using the nonna-cable (10A mains plug). Once plugged into an EVSE it appears to be ignored. What charge rate are you getting out of that setup? I'm guessing 11kW?

 

[FDR]

I have recently installed a 16.28kW home solar system and 3 phase ZJBeny wallbox-type 'charger' and before using the 'charger' for the first time I set the charging rate (via MBUX) to 'maximum'. I'm not sure whether that was necessary in the context of using the wallbox-type 'charger'

If you hadn’t altered the charge setting on your car from 6amps to max the car would be limited to 6amps no matter which EVSE you used so you wouldn’t have gained the benefit of your new EVSE allowing your car to charge to its maximum of 11kwh.
I use the three alternative charging settings for this via the MBUX, I have “Home” set up for the 240volt ”granny” charger (which I would only use for emergencies) restricted to 6amp and 80% charge, the ”Standard” profile for using my 3 phase 22 kWh Zappi home EVSE or away from home rapid charging, set for max amps and limited to 80% charge and the “Work” profile set to max amps and 100% for when I need a full charge. This provides a quick way to alter charging to suit my needs.

 

[dBC]

If you hadn’t altered the charge setting on your car from 6amps to max the car would be limited to 6amps no matter which EVSE you used so you wouldn’t have gained the benefit of your new EVSE allowing your car to charge to its maximum of 11kwh.

That's a definite difference then between the EQA and the EQC. On the EQC it even mentions "for charging at mains sockets" on the Maximum Charge Current screen. In this shot I've got it set to 8 amps, but you can see it's happily drawing 32A (7.3 kW) from the EVSE.

 

[FDR]

That's a definite difference then between the EQA and the EQC. On the EQC it even mentions "for charging at mains sockets" on the Maximum Charge Current screen. In this shot I've got it set to 8 amps, but you can see it's happily drawing 32A (7.3 kW) from the EVSE.
View attachment 1388

That’s not something I have ever tried but according to the manual when the high voltage battery is charging it is limited to the set amps. It says that the charge would be limited to suit the cable I.e. even if it was set to maximum and an 8amp cable was used the charge would be limited to 8amps.

 

[dBC]

Does your screen display say "for charging at mains sockets"? If so, I expect it behaves the same as the EQC and your owners manual is lacking detail.

 

[FDR]

Only one way to know for certain, I just went out to try it and you are correct, I set the charge limit to 8 amps and plugged in my 22kwh EVSE and the car charged at 11kwh, behaving the same as yours. Looks like the manual is only partly right and should say limits only apply to mains sockets.

 

[EQA-S.oz]

Thanks for expanding on this topic, everyone.

dBC: that reset information is useful and makes sense. My EQA also says the charge rate setting is for charging from the mains (socket) and yes, my wallbox-type charger shows a charge rate of 11kW.

FDR: what is the source of your screenshot? I assumed it was the onboard Owner's Manual (which I've never used), so I went out and briefly explored it. I found it very clunky and I couldn't find a page similar to that which you've posted, which looks like a page from my hard copy Owner's Manual, although my hard copy manual only has 436 numbered pages.

I'm pleased to note that you and dBC agree that the MBUX charge current setting only relates to mains socket charging.

 

[FDR]

My screenshot is from the owners manual I downloaded from the Mercedes Benz website. When I first got the car I found I kept needing information on various aspects of the car which came to mind when I was in the house, the paper version of the manual being left in the car locked in the garage! The downloaded manual is also easier to search and has all the same information albeit on different page numbers. My hard copy Owners Manual has 447 numbered pages including the index so might be a different version from yours.
With regard to the charge current settings both the hard copy and my downloaded manuals have confusing info on this, page 167 of my hard copy has a section titled “Setting the maximum permissible charging current for charging at a mains socket “ referring to the page in my screenshot (page 177 in the hard copy) on “configuring the charging settings”. Page 177 clearly states “when the high voltage battery is charged the charging current is limited to the selected amperage”. Neither page says this reduced amperage ONLY applies to using a mains socket, which dBC and I have proved to be the case.
I’m afraid I can’t offer much help on your original question on the trip meter except to say I reset my trip meter in the car (car trip now shows 870 miles) and the “From reset distance travelled“ in the app is still showing only 0.6 miles less than the “overview total miles reading“ so I have no idea how to achieve a “reset” in the app unless it refers to a total system reset (presumably a System reset had been done during the car’s delivery process to result in a “From reset” figure the same as the total on the odometer).

 

[dBC]

I’m afraid I can’t offer much help on your original question on the trip meter except to say I reset my trip meter in the car (car trip now shows 870 miles) and the “From reset distance travelled“ in the app is still showing only 0.6 miles less than the “overview total miles reading“

I think you might be confusing trip meters there. If you include the simple trip meter then the car actually has 3 trip meters: SIMPLE, FROM-START and FROM-RESET. They're completely independent of each other - resetting one will not have any impact on the other two. They're all viewable and resetable from the driver's seat. The reset procedure for each is identical (described in my post above).

Two of them (FROM-START and FROM-RESET) are also viewable from the app, which can be handy for taking screenshots at charging stations for later entry into your spreadsheet if you're that way inclined. AFAIK there's no way to view the SIMPLE reading from the app.

The SIMPLE trip meter gets displayed alongside the odometer and behaves like trip meters have since the 60s. It simply counts distance since you last reset it. It rolls over at 1000, i.e. only has 3 digits to the left of the decimal place.

The FROM-START and FROM-RESET trip meters are more advanced. As well as distance since reset, they track running time, average speed and average consumption since reset (again, completely independently from each other and the SIMPLE trip meter). As described in my post above, the FROM-START trip meter has a handy auto-reset once the car has been parked for > 4 hours.

EQA-S.oz I reset my FROM-RESET trip meter every time I recharge so the longest distance it's ever seen is about 330km. I suspect (but haven't confirmed) that it too is a 3 digit trip meter. It wrapping at 1000 might be the cause of some of your issues. It's possible it's just not designed for the way you're using it (measuring since delivery).

You can see 3 different distances are being tracked:

EQC FROM-RESET tripmeter.

EQC FROM-START tripmeter

EQC SIMPLE tripmeter

220S SIMPLE tripmeter.

 

[Dar]

To confirm, the FROM RESET goes over 1000km for me at 21615km (more than 3 numbers left of decimal point) so I don't think Mercedes made a mistake there!

Apparently I have travelled 21615km since reset compared the odometer 21614km, another bug else odometer was reset before delivery but FROM RESET was not reset!

If I switch on car into READY, but not drive anywhere, I can confirm the consumption is "infinite" 99.9

I took a screenshot recently, when SIMPLE was around 700, that showed 99.9 in Mercedes Me app even after driving 17.6km. FROM RESET was as expected, but FROM START wasn't. Car likely showed the correct FROM RESET value as EQA-S.oz discovered (I didn't check myself).

 

[Dar]

I also just noticed more bugs from above photos:

FROM RESET in car: 21615km
ODOMETER in car: 21614km
FROM RESET in app: 21615.7km
ODOMETER in app: 21613km

 

[FDR]

I think you might be confusing trip meters there. If you include the simple trip meter then the car actually has 3 trip meters: SIMPLE, FROM-START and FROM-RESET. They're completely independent of each other - resetting one will not have any impact on the other two. They're all viewable and resetable from the driver's seat. The reset procedure for each is identical (described in my post above).

Two of them (FROM-START and FROM-RESET) are also viewable from the app, which can be handy for taking screenshots at charging stations for later entry into your spreadsheet if you're that way inclined. AFAIK there's no way to view the SIMPLE reading from the app.

The SIMPLE trip meter gets displayed alongside the odometer and behaves like trip meters have since the 60s. It simply counts distance since you last reset it. It rolls over at 1000, i.e. only has 3 digits to the left of the decimal place.

The FROM-START and FROM-RESET trip meters are more advanced. As well as distance since reset, they track running time, average speed and average consumption since reset (again, completely independently from each other and the SIMPLE trip meter). As described in my post above, the FROM-START trip meter has a handy auto-reset once the car has been parked for > 4 hours.

EQA-S.oz I reset my FROM-RESET trip meter every time I recharge so the longest distance it's ever seen is about 330km. I suspect (but haven't confirmed) that it too is a 3 digit trip meter. It wrapping at 1000 might be the cause of some of your issues. It's possible it's just not designed for the way you're using it (measuring since delivery).

You can see 3 different distances are being tracked:

View attachment 1390
EQC FROM-RESET tripmeter.


View attachment 1391
EQC FROM-START tripmeter

View attachment 1392
EQC SIMPLE tripmeter

View attachment 1393
220S SIMPLE tripmeter.

Thanks for the clarification on that, I have to admit I haven’t had a great interest in these extra readings, the Simple trip meter does all I need.

 

[Parkwood]

The eco coach app also has some excellent data about consumption screenshot attached.
It is not available in all markets but I use it all the time and it has a lot of useful behavioural prompts. You can exchange points earned for monetry vouchers to use against charge costs or pay to offset carbon.