Buster42
Posts: 3
Joined: Tue Sep 01, 2020 10:01 am
Delivery Date: 06 Apr 2018

2018 LEAF Sudden acceleration problem

Tue Sep 01, 2020 10:11 am

My 2018 LEAF has a disturbing issue and my dealer can't figure out the problem.

Occasionally, when I am driving fast (60mph) and then take my foot off the accelerator to slow down (in ECO mode), the moment I touch the brake the car will accelerate at full power. If push down hard on the brake, it will stop the acceleration, but not before I've lurched forward.

It only happens about once a week, but it is scary and I am now forced to slow down much sooner than I need to just in case it accelerates when I hit the brake. The dealership in my town is pretty useless and they could not find any problem.

Does anyone one else have this issue? I would like to take it up with Nissan directly, but I would have more luck getting their attention if it happened to more than one vehicle.

Learjet
Posts: 89
Joined: Tue Mar 24, 2020 8:04 pm
Delivery Date: 11 Mar 2020
Leaf Number: 309454
Location: Louisiana, USA

Re: 2018 LEAF Sudden acceleration problem

Tue Sep 01, 2020 4:48 pm

doesn't happen with ECO off? I would leave it off :shock:
2019 Nissan Leaf SL Plus

SageBrush
Posts: 5155
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: NM

Re: 2018 LEAF Sudden acceleration problem

Tue Sep 01, 2020 5:28 pm

Choice #1: OP is trolling
Choice #2: OP wants his car declared a lemon
Choice #3: See choice #1
2013 LEAF 'S' Model with QC & rear-view camera
Bought Jan 2017 from N. California
Two years in Colorado, now in NM
03/18: 58 Ahr, 28k miles
11/18: 56.16 Ahr, 30k miles
09/20: 54.3 Ahr; 38k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018

DougWantsALeaf
Posts: 1970
Joined: Fri May 10, 2013 8:21 pm
Delivery Date: 18 May 2013
Leaf Number: 407811
Location: Chicago North Side

Re: 2018 LEAF Sudden acceleration problem

Tue Sep 01, 2020 6:18 pm

Only thought is if you have cruise control on and going below the limit set. When taking foot off of accelerator about 1/2 second later the throttle will hit, but you might think it was due to foot touching the brake.
2019 S Plus (97.98% SOH) & 2019 SV Plus (94.84% SOH) Both Silver
2013 Leaf SV sold 2019 with 11 bars
100 Mile Club Member (Number 87)
Max Miles on 13 Leaf: 120 miles
Max Miles on 19 SV+: 242 Highway miles @ 4.5 miles/kWh

alozzy
Posts: 1568
Joined: Fri Jan 20, 2017 4:25 pm
Delivery Date: 18 Jan 2017
Location: Vancouver, BC
Contact: Website

Re: 2018 LEAF Sudden acceleration problem

Tue Sep 01, 2020 7:24 pm

Have experienced a similar sensation with my 2013 on uneven, bumpy roads. Try disabling the traction control for awhile and see if it still happens.
Vancouver, CA owner of a 2013 Ocean Blue SV + QC, purchased 01/2017 in WA
Zencar 12/20/24/30A L1/L2 portable EVSE
1-1/4" Curt #11396 hitch
After market, DIY LED DRLs
LeafSpy Pro + Konnwei KW902 ELM327 BT OBDII dongle
Loving my first BEV :D

LeftieBiker
Moderator
Posts: 15269
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: 2018 LEAF Sudden acceleration problem

Tue Sep 01, 2020 8:06 pm

alozzy wrote:
Tue Sep 01, 2020 7:24 pm
Have experienced a similar sensation with my 2013 on uneven, bumpy roads. Try disabling the traction control for awhile and see if it still happens.

The ABS 'float' doesn't feel like full power is being applied, and the car doesn't accelerate.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
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alozzy
Posts: 1568
Joined: Fri Jan 20, 2017 4:25 pm
Delivery Date: 18 Jan 2017
Location: Vancouver, BC
Contact: Website

Re: 2018 LEAF Sudden acceleration problem

Tue Sep 01, 2020 9:18 pm

Yes, but on descents it feels just like it's accelerating.

Anyways, it does no harm to rule out the possibility.
Vancouver, CA owner of a 2013 Ocean Blue SV + QC, purchased 01/2017 in WA
Zencar 12/20/24/30A L1/L2 portable EVSE
1-1/4" Curt #11396 hitch
After market, DIY LED DRLs
LeafSpy Pro + Konnwei KW902 ELM327 BT OBDII dongle
Loving my first BEV :D

Buster42
Posts: 3
Joined: Tue Sep 01, 2020 10:01 am
Delivery Date: 06 Apr 2018

Re: 2018 LEAF Sudden acceleration problem

Fri Sep 04, 2020 9:58 am

It's definitely not ABS and the acceleration is stronger than reengaging the cruise control. The dealer thought it could be something with the cc reengaging, so I've tested be manually resuming the cc after slowing down and it is not the same feeling.

I'm going to drive it a week with ECO off to see if it still happens. Or I could just drive with e-pedal....

alozzy
Posts: 1568
Joined: Fri Jan 20, 2017 4:25 pm
Delivery Date: 18 Jan 2017
Location: Vancouver, BC
Contact: Website

Re: 2018 LEAF Sudden acceleration problem

Fri Sep 04, 2020 5:15 pm

Ok, but I didn't say anything about ABS :-)
Vancouver, CA owner of a 2013 Ocean Blue SV + QC, purchased 01/2017 in WA
Zencar 12/20/24/30A L1/L2 portable EVSE
1-1/4" Curt #11396 hitch
After market, DIY LED DRLs
LeafSpy Pro + Konnwei KW902 ELM327 BT OBDII dongle
Loving my first BEV :D

Buster42
Posts: 3
Joined: Tue Sep 01, 2020 10:01 am
Delivery Date: 06 Apr 2018

Re: 2018 LEAF Sudden acceleration problem

Wed Sep 09, 2020 4:27 pm

@alozzy

Sorry, just re-read you post. I will play with the traction control.

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