TonyWilliams
Well-known member
garygid said:Where does one see the "Average Speed" displayed, please?
It's on the driver's console with miles/kWh.
garygid said:Where does one see the "Average Speed" displayed, please?
TonyWilliams said:Have you tried the calibration settings in the service menu?
(Audio Power off, Map, Map, Map, Audio Power, Audio Power, Map)
...
The adjustment in the service pages, "Navigation", "Speed Calibration", is only +/- 2.5%.
I found that it was more practical to adjust it by 2%. When I tried 2.5% my speedometer would bounce up and down 1 mph when cruise control was set. I found that annoying so I backed it off to 2% and the problem went away. FWIW.dhanson865 said:Thank you very much!
I was about to buy tires and knowing I can adjust this by 2.5% is very nice.
I did fail to get in on the first couple of tries. You have to hit the sequence at a relatively fast speed. I was doing it more slow and deliberate the first two tries. Do it faster and it works on the first try every time.
dgpcolorado said:I found that it was more practical to adjust it by 2%. When I tried 2.5% my speedometer would bounce up and down 1 mph when cruise control was set. I found that annoying so I backed it off to 2% and the problem went away. FWIW.dhanson865 said:Thank you very much!
I was about to buy tires and knowing I can adjust this by 2.5% is very nice.
I did fail to get in on the first couple of tries. You have to hit the sequence at a relatively fast speed. I was doing it more slow and deliberate the first two tries. Do it faster and it works on the first try every time.
No, and my sense was that it doesn't matter. What I found was that the set point of the cruise control changed when using that speedometer adjustment and 0.5% changes caused the cruise set point, as measured by the speedometer, to appear unstable, which I found annoying. So I dropped the adjustment to the next whole number, 2%, and the problem went away. It had nothing to do with tires or wheel rpm, it is an artifact of the electronic control of cruise setting. That's all I'm saying. I mention it in case someone else notices it and wonders why the cruise seems unstable.dhanson865 said:Do you know the RPM of the tires you were using when that happened?...
dhanson865 said:I wonder if you have to come to a stop and/or power cycle the entire car while in park to get the change to take effect?
JeffInCO said:I have a 2015 SV that came with 17" wheels. I recently switched them out for 16" winter wheels/tires, and tried to recalibrate. I tried +2.4%, +2%, -2%, -2.4% and the setting seems to have no effect on the dash speed. (I power-cycled the vehicle before driving after each setting change.)
Has anyone had success changing the calibration on a recent vehicle? If so, what steps did you take?
Thanks,
Jeff
No, will be off by 5%.Thekuai said:When my speedo reads 63 mph I am going 60mph. If I'm reading these posts correctly, I have to change it to -2.5%?
rogersleaf said:No, will be off by 5%.Thekuai said:When my speedo reads 63 mph I am going 60mph. If I'm reading these posts correctly, I have to change it to -2.5%?
My experience with that adjustment screen is it did absolutely nothing. Speedo & odometer we’re off the same 5% after changing the settings.Thekuai said:rogersleaf said:No, will be off by 5%.Thekuai said:When my speedo reads 63 mph I am going 60mph. If I'm reading these posts correctly, I have to change it to -2.5%?
I meant on the special calibration page where the max adjustment is + or - 2.5%
In most cases I would agree. However, this was a leased vehicle that I was being charged based off of the inaccurate odometer calibration (which was set to NMAC’s favor by 5%). I’m no lawyer, but think this is called fraud.powersurge said:2.5% or even 5% of speed difference is nothing.. Worry about more important things... And I say this with love in my heart.....
GerryAZ said:The menu adjustment +/- 2.5% was enough to calibrate my 2011 to within 1 mi/hr. I tried to use the menu adjustment on my 2015 when I first purchased it, but the car automatically returned the setting to zero after driving a while. I eventually found that the speedometer was within 1 mi/hr of a fast-response GPS with the original tires inflated to 44 psi. I noticed no change with the first set of replacement tires. I recently purchased new tires one size larger so I planned to use the menu adjustment to compensate. Again, the menu adjustment returned to zero after driving. I then discovered that the speedometer was still within 1 mi/hr (fast-response GPS generally indicated 1 mi/hr higher than speedometer). I eventually concluded that the navigation system GPS must send a calibration signal to the speedometer periodically (it also sends the clock signal to the eyebrow display so the clock never needs to be set). It does not calibrate the odometer so it now reads about 3.5% lower than actual distance diriven.
Edited to add: I don't know when the change was made, but the clock in the 2011 required periodic resetting and the +/- 2.5% adjustment in the menu was effective. The 2015 seems to set the clock and calibrate the speedometer automatically from the navigation system GPS.
rogersleaf said:In most cases I would agree. However, this was a leased vehicle that I was being charged based off of the inaccurate odometer calibration (which was set to NMAC’s favor by 5%). I’m no lawyer, but think this is called fraud.powersurge said:2.5% or even 5% of speed difference is nothing.. Worry about more important things... And I say this with love in my heart.....
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