MPG Calibration

bat,

Your link does indicate that the setting can be changed for an Outback.

The Prius mpg error has been discussed repeatedly since the gen 3 came out over 7 years ago.There is no dealer or consumer setting for a Prius. Changing the setting on a Prius therefore would involve hacking the code.

That is what mikefocke is referring to when he says "Doing so would void any warranty." He is not talking about the Outback.

 

No, he's talking about changing it in general, not by who does it. You inferred it was hacked by the owner, and not adjusted the dealer, brand doesn't matter.

If the dealer does it, (which should be possible) no warranty issues.

 

If the data item were designed to be changeable (as the item in the Outback was) and a user or dealer method provided, then changing it would not void the warranty.

But, since it isn't, then you download, disassemble, fool around, find the logic, see the data variable, change the variable, upload and then test.

 

True, but I am not suggesting any owner should hack their systems.

I am just saying it should be possible for Toyota to have the option for their dealers to do.

 

Make that more accurate and we are good.

A good place to start would be to VIEW your own posts after they are submitted.
The LINK did NOT appear in your last post......which was the biggest problem.

The other problem is: You are making a HUGE assumption that just because one make of vehicle can do it that others can too........with no real evidence to support that.

In one post you claim to know that the "electronics are the same".
While I admit that I don't know for sure that they aren't, I think it is HIGHLY unlikely that they are the same.

 

The link was in my 2nd post, (#8 of this thread), before this drama started.

 

Yes, Toyota could make that option available but has chosen not to do so. Therefore, we Prius owners have to live with the mpg error. End of story.

 

Let's all just tell him he is right......because that's all he is going to accept.
Then we can move on.

 

Thinking of going over to my Toyota dealer with my '12 Prius wagon to ask them to check my All Wheel Drive system because, you know... Subaru.

 

Yep! our 2017 Prius V reports 40 MPG, the actual calculation comes out 37.8 MPG. Also, the speedometer reads 2-3 MPH fast, compared with our dashcam's gps.

 

At least it’s a consistent error...

 

Sam Spade is a grump old man. Yep, had to reset my password just to point that out !!

 

I installed a ScanGauge shortly after purchasing my Prius V. It takes a couple of fill-ups to calibrate the mileage function by entering the number of gallons consumed. I verified, using the miles traveled from the odometer and the gallons consumed, that the ScanGauge mpg is accurate and repeatable.

Once done, I noticed that the mpg on the ScanGauge doesn't track with the dash displayed mpg. At times they are just a couple mpg different with the dash reading always being higher and at other times they vary by as much as 8 mpg. The longer the trip the more the ScanGauge and the dash display tend to converge but the dash display is always at least 3 mpg higher. Due to that variability between the two values, I am not sure that a calibration for the dash display is possible. It is more of a guideline for mileage.

Confucius say "Man with two watches never knows what time it is".