PianoAl
Posts: 222
Joined: Mon May 16, 2016 4:15 pm
Delivery Date: 20 May 2016

Speedometer Reads 6% High

Fri Jun 24, 2016 9:16 am

Every time I've passed one of those "Your Speed" displays

Image

The speed shown on the LEAF's speedometer is about 6% high. For example, the sign will say I'm going 50 MPH, and the dashboard display will say I'm going 53.

True for you?
2016 Nissan LEAF Model S, Purchased May 2016

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DuncanCunningham
Posts: 518
Joined: Thu Mar 26, 2015 10:02 am
Delivery Date: 15 Apr 2015
Location: Bountiful, UT

Re: Speedometer Reads 6% High

Fri Jun 24, 2016 10:47 am

mine is off a little in 30 zones.. I can be doing 33 on my reading and 30 on the speed display reader.

I've heard, in the past, that car mph reading can be up to 10% off calibration.
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LeftieBiker
Posts: 9418
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: Speedometer Reads 6% High

Fri Jun 24, 2016 11:25 am

2MPH is pretty typical, and the error is consistent. I just set the cruise control for 2-3mph over the limit.
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PianoAl
Posts: 222
Joined: Mon May 16, 2016 4:15 pm
Delivery Date: 20 May 2016

Re: Speedometer Reads 6% High

Fri Jun 24, 2016 12:00 pm

I do the same. I wonder whether my odometer will also be 6% high??
2016 Nissan LEAF Model S, Purchased May 2016

LeftieBiker
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Re: Speedometer Reads 6% High

Fri Jun 24, 2016 12:24 pm

PianoAl wrote:I do the same. I wonder whether my odometer will also be 6% high??


Probably. This has come up with battery warranty claims. Nissan doesn't care.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

baustin
Posts: 658
Joined: Tue Feb 24, 2015 1:23 pm
Delivery Date: 09 Mar 2015
Leaf Number: 402162
Location: North Las Vegas, NV

Re: Speedometer Reads 6% High

Fri Jun 24, 2016 2:41 pm

The size of the tires on the vehicle can affect this. I have not checked my Leaf to see if it is correct, but I see this on my truck. I installed tires that are one size larger than the truck was shipped with. When the speedometer shows 65mph, the GPS display shows I am going 68mph.

If the Leafs are all calibrated for the largest size tire option available for the car, but it ships with a smaller size, I believe that would result in the discrepancy being reported.
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dhanson865
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Leaf Number: 16156
Location: Tennessee

Re: Speedometer Reads 6% High

Fri Jun 24, 2016 10:05 pm

You can adjust it down 2.5% on the car (might require a SV/SL to have the center screen though), the rest is up to buying different size tires.

(Turn the Audio Power off, then press Map, Map, Map, Audio Power, Audio Power, Map)

The adjustment in the service pages, "Navigation", "Speed Calibration", is only +/- 2.5%.

If you can't get to that screen you might be able to get the dealer to use their scantool to set the -2.5% speedometer setting.

Then when you go to get new tires pick a tire with a RPM nearest to 815 revs per mile or 25.5" diameter. Doesn't have to match the OEM tire sizes just pick the size that matches the RPM/diameter.
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dhanson865
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Leaf Number: 16156
Location: Tennessee

Re: Speedometer Reads 6% High

Fri Jun 24, 2016 10:14 pm

baustin wrote:The size of the tires on the vehicle can affect this. I have not checked my Leaf to see if it is correct, but I see this on my truck. I installed tires that are one size larger than the truck was shipped with. When the speedometer shows 65mph, the GPS display shows I am going 68mph.

If the Leafs are all calibrated for the largest size tire option available for the car, but it ships with a smaller size, I believe that would result in the discrepancy being reported.


The tire size between the OEM 16" and OEM17" is good for 2.x/3.x% depending on which way you do the math (815/837 vs 837/815). The rest is based on that stupid law that says that the car has to be sold with a speedometer that reads 0% to +10% on speed. There is a fine for the manufacturer if the speed is under reported but not if over reported less than 10%. So they make sure it will over report on even the largest tire that will fit.

Then you the consumer can remove the OEM tires and put on tires that correct that error and you as a consumer are allowed to adjust any calibration setting the speedometer might have.
Blue 2012 Leaf 195/65/15 tires, 15" Rims
Silver 2012 Leaf 16" stock wheels
wiki/index.php?title=Real_World_Battery_Capacity_Loss
(efficiency 3.x KW vs 6.x KW)
please join Truedelta.com and input your repairs.

bowthom
Posts: 652
Joined: Sun Jul 18, 2010 12:22 pm
Delivery Date: 23 Feb 2011
Leaf Number: 307
Location: Portland Oregon

Re: Speedometer Reads 6% High

Sat Jun 25, 2016 10:56 pm

Hello,
According to mfr specs and DOT regs a speedo error range must be +2.5/-0, so all speedos read fast when delivered.
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TomT
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Re: Speedometer Reads 6% High

Sun Jun 26, 2016 8:12 am

Nope, the speedo on my 2017 Volt is dead on... Our 2013 CUV is also dead on... Nissan is simply lazy or playing a game...

bowthom wrote:According to mfr specs and DOT regs a speedo error range must be +2.5/-0, so all speedos read fast when delivered.
59,991 miles/12 bars/289 Gids/68.54 AHr/101% SOH/101.64% Hx 7May15 w/ new Lizard (barely made the warranty).
71,770 miles/12 bars/256 Gids/59.04 AHr/88% SOH/87.92% Hx 3Mar16 at lease return.

Now driving a 2016 Volt Premier.

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