DoxyLover
Posts: 517
Joined: Fri Jul 15, 2011 9:52 pm
Delivery Date: 16 Oct 2011
Leaf Number: 9214
Location: San Jose, CA

Cruise Control Oddity

I had my Leaf cruise control act up a bit yesterday. I searched and didn't find any other reports. I'm just wondering if anyone else has seen this.

I was on cruise control at 61 MPH last night. I had been on cruise for about 10 miles and everything was fine and suddenly, the car started slowing down. I looked down to see the speed drop to about 56 and then stabilize. The display showed that the cruise control was still set. My hand was nowhere near the cruise control buttons/toggle and my foot was not touching any pedal.

After establishing that nothing looked wrong on the displays (other than the speed), I flicked the toggle up a few times, slowly, until I was back at 61. It behaved fine the rest of the trip home (another 5 miles).

Note that the cruise control never actually disengaged as it would if I pressed the brake or pushed CANCEL. It was as if flicked down the toggle a few times (though I did not).

I am happy that if the cruise control decided to screw up, it slowed down instead of increasing speed. However, in all of my years of driving, including 4 years in a Gen II Prius with a similar cruise control, I have never had this happen. Just a little disconcerting.

Any thoughts?

Thanks
2011 Brilliant Silver Leaf SL
Reserved, quoted and ordered July 11, 2011
Delivered October 16, 2011 (Na. Plug-In Day)
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planet4ever
Posts: 4674
Joined: Sat Apr 03, 2010 9:53 pm
Delivery Date: 02 May 2011
Leaf Number: 1537
Location: Morgan Hill, CA, south of San Jose

Re: Cruise Control Oddity

I've probably used cruise control for close to 2000 miles so far, and never had a hiccup like that. It drifts no more than 1 mph except when going down hills. The closest I had to seeing something similar was when my wife tried to open the console compartment and grabbed the parking brake lever instead. But you would know if that happened - red lights lit up on the dash. Besides, I'm sure it didn't stabilize at a lower speed. I can't remember now whether it dropped out (probable) or slowed and went back up to speed when I yelped and she released the lever.

Ray
End of April 2013: Traded my 2011 SL for a 2013 S with charge pkg.
GerryAZ
Gold Member
Posts: 3323
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: Cruise Control Oddity

I use the cruise control a lot. I have never seen the speed drop off unless cancel, brake, or toggle switch is touched. You did not happen to bump the "shifter" to change from D to ECO, did you? That might change the speed set point. I really like how steady the cruise control holds the speed--even down hill unless the hill is too steep for regeneration to hold it back.

I would keep using it and not worry about it unless it happens again. If it happens again, take it to the dealer for diagnosis and repair because it should not do that.

Gerry
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015; traded 8/10/2019 at 82,436 miles
White LEAF 2019 SL Plus purchased 8/10/2019
Stoaty
Posts: 4490
Joined: Fri Jun 18, 2010 9:50 pm
Delivery Date: 12 Jun 2011
Leaf Number: 3871
Location: West Los Angeles

Re: Cruise Control Oddity

GerryAZ wrote:I use the cruise control a lot. I have never seen the speed drop off unless cancel, brake, or toggle switch is touched. You did not happen to bump the "shifter" to change from D to ECO, did you? That might change the speed set point.
Nope. I switch between D and ECO periodically while cruise control is on. Never had any effect on speed.
2011 Leaf with 62,000 miles given to Nephew
2013 Tesla Model S85 with 251 miles rated range at full charge
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ebill3
Posts: 1400
Joined: Fri May 27, 2011 1:23 pm
Delivery Date: 15 Sep 2011
Leaf Number: 7964
Location: Puyallup WA

Re: Cruise Control Oddity

DoxyLover wrote:I was on cruise control at 61 MPH last night.
Off topic, but curious. Why 61? Because that is really 60?

When my LEAF says 61, my Garmin GPS says 60.

Bill
All electric - red LEAF, green Tesla S. No ICE.
DarkStar
Posts: 2066
Joined: Sat Jul 17, 2010 10:06 am
Delivery Date: 25 Mar 2011
Leaf Number: 568
Location: Hillsboro, Oregon, USA
Contact: Website

Re: Cruise Control Oddity

ebill3 wrote:When my LEAF says 61, my Garmin GPS says 60.
Due to GPS sampling errors, you really can't count on them to provide an accurate speed.
Mikiko (2011 Nissan LEAF ETEC) Status:
Reserved: 04/20/10 | Ordered: 10/01/10 | EV Project Blink Installed: 03/22/11 | Delivered: 03/25/11 | VIN: 568

Oregon Electric Vehicle Association | Electric Auto Association
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ebill3
Posts: 1400
Joined: Fri May 27, 2011 1:23 pm
Delivery Date: 15 Sep 2011
Leaf Number: 7964
Location: Puyallup WA

Re: Cruise Control Oddity

DarkStar wrote:
ebill3 wrote:When my LEAF says 61, my Garmin GPS says 60.
Due to GPS sampling errors, you really can't count on them to provide an accurate speed.
Really? I'll take the GPS indicated speed over a speedo any time.

Bill
All electric - red LEAF, green Tesla S. No ICE.
DoxyLover
Posts: 517
Joined: Fri Jul 15, 2011 9:52 pm
Delivery Date: 16 Oct 2011
Leaf Number: 9214
Location: San Jose, CA

Re: Cruise Control Oddity

ebill3 wrote:
DoxyLover wrote:I was on cruise control at 61 MPH last night.
Off topic, but curious. Why 61? Because that is really 60?

When my LEAF says 61, my Garmin GPS says 60.

Bill
I was keeping my speed down to save extend range and 60 just felt too slow! :lol:

Interesting, and not surprising, that no one else has seen this. I'll keep an eye out for further occurances.

Thanks all.
2011 Brilliant Silver Leaf SL
Reserved, quoted and ordered July 11, 2011
Delivered October 16, 2011 (Na. Plug-In Day)
DarkStar
Posts: 2066
Joined: Sat Jul 17, 2010 10:06 am
Delivery Date: 25 Mar 2011
Leaf Number: 568
Location: Hillsboro, Oregon, USA
Contact: Website

Re: Cruise Control Oddity

ebill3 wrote:
DarkStar wrote:
ebill3 wrote:When my LEAF says 61, my Garmin GPS says 60.
Due to GPS sampling errors, you really can't count on them to provide an accurate speed.
Really? I'll take the GPS indicated speed over a speedo any time.
A typical GPS can only tell its "speed" by calculating the distance between two samples and comparing that by the time it took. While a lot of GPS systems say things like "60 Hz," the software usually runs at a lot slower rate to save the battery adding to the margin of error.

Personally, my experience is that the Leaf is within a mile-per-hour when traveling at 40 MPH. Depending on tire pressure, it's probably even closer than that...
Mikiko (2011 Nissan LEAF ETEC) Status:
Reserved: 04/20/10 | Ordered: 10/01/10 | EV Project Blink Installed: 03/22/11 | Delivered: 03/25/11 | VIN: 568

Oregon Electric Vehicle Association | Electric Auto Association
Jim66
Posts: 32
Joined: Sat Sep 18, 2010 3:27 pm
Delivery Date: 05 May 2011
Location: Carlsbad, CA

Re: Cruise Control Oddity

I have not seen the cruise control change speed, either. Sounds like a defective switch or wires in the steering column.
Jim W
Blue SL-e, 5/5/11

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