DougWantsALeaf
Posts: 3476
Joined: Fri May 10, 2013 8:21 pm
Delivery Date: 18 May 2013
Leaf Number: 407811
Location: Chicago North Side

Propilot and steering

We recently moved our SV+ to the stock S+ 16" rims. The steering didn't lighten up like we experience in our S+ (now with EV01+ rims). I am beginning to hypothesize that the augmentation if propilot adds a bit of sluggishness to the steering. My adult children both comment that they only like to drive the S+, as the SV+ feels heavy to drive. The difference is quite noticeable.

We are going to switch tires and rims in a month, so a good time for per post efficiency experiment.
2019 S Plus (92.7% SOH) & 2019 SV Plus (90.6% SOH) Both Silver
2013 Leaf SV sold 2019
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
LeftieBiker
Moderator
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Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Propilot and steering

You don't think that turning Pro Pilot's steering assist on and off will suffice to test it?
Brilliant Silver 2021 Leaf SV40 W/ Pro Pilot & Protection
2009 Vectrix VX-1 W/18 Leaf modules, & 2 lithium E-bicycles.
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DougWantsALeaf
Posts: 3476
Joined: Fri May 10, 2013 8:21 pm
Delivery Date: 18 May 2013
Leaf Number: 407811
Location: Chicago North Side

Re: Propilot and steering

No, even with propilot off the SV+ steering is heavier than the S+. Steering aside, I am now curious to see if flipping the tires/rims in a month flips the efficiency... my hypothesis is that it won't completely. Something else also works in the S+ favor beyond smaller rims/tires.
2019 S Plus (92.7% SOH) & 2019 SV Plus (90.6% SOH) Both Silver
2013 Leaf SV sold 2019
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
DougWantsALeaf
Posts: 3476
Joined: Fri May 10, 2013 8:21 pm
Delivery Date: 18 May 2013
Leaf Number: 407811
Location: Chicago North Side

Re: Propilot and steering

I have to say the 23 propilot must have better hardware than my 19 propilot. It engages so much faster and can handle situations better with fewer disengagement.

Oddly, I swear my 19 propilot can handle a few sharper freeway turn sections now, when it would bail when I first got the car.
2019 S Plus (92.7% SOH) & 2019 SV Plus (90.6% SOH) Both Silver
2013 Leaf SV sold 2019
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
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knightmb
Posts: 1792
Joined: Mon Jan 12, 2015 7:41 pm
Delivery Date: 26 Feb 2021
Leaf Number: 306291
Location: Franklin, TN

Re: Propilot and steering

DougWantsALeaf wrote: Sun Dec 04, 2022 12:36 pm I have to say the 23 propilot must have better hardware than my 19 propilot. It engages so much faster and can handle situations better with fewer disengagement.

Oddly, I swear my 19 propilot can handle a few sharper freeway turn sections now, when it would bail when I first got the car.
It's possible those curves had the lines painted better or washed (maybe they were covered in mud and dirt), that aids pro-pilot. I've noticed the same thing when streets were repainted with brighter lines, pro-pilot could engage the second you pressed the button instead of having a delay to "learn" the road conditions. My guess is everyone's pro-pilot after ours (2019, 2020), probably does get better as the learning data fed into them gets better and better.
2020 Leaf SL Plus - (Manufacture Date March 2020)
2018 Leaf SL - (Manufacture Date February 2018)
2013 Leaf SV - (8 faithful years of service before trade in at 75,679 miles LeafSpy-Data)
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DougWantsALeaf
Posts: 3476
Joined: Fri May 10, 2013 8:21 pm
Delivery Date: 18 May 2013
Leaf Number: 407811
Location: Chicago North Side

Re: Propilot and steering

Good point, I hadn't thought about the lines themselves.
2019 S Plus (92.7% SOH) & 2019 SV Plus (90.6% SOH) Both Silver
2013 Leaf SV sold 2019
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
CeladonCityNPC
Posts: 53
Joined: Fri Apr 29, 2022 1:29 pm
Delivery Date: 15 Aug 2021

Re: Propilot and steering

DougWantsALeaf wrote: Wed Nov 23, 2022 9:43 pm We recently moved our SV+ to the stock S+ 16" rims. The steering didn't lighten up like we experience in our S+ (now with EV01+ rims). I am beginning to hypothesize that the augmentation if propilot adds a bit of sluggishness to the steering. My adult children both comment that they only like to drive the S+, as the SV+ feels heavy to drive. The difference is quite noticeable.

We are going to switch tires and rims in a month, so a good time for per post efficiency experiment.
Have you checked that the power steering fluid reservoir under the hood is filled up to the mark? You'd assume it would make some noises if it wasn't, but it doesn't in all cases.
LeftieBiker
Moderator
Posts: 19413
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Propilot and steering

The Leaf uses electric power steering. I'd be surprised to see a hydraulic reservoir for it.
Brilliant Silver 2021 Leaf SV40 W/ Pro Pilot & Protection
2009 Vectrix VX-1 W/18 Leaf modules, & 2 lithium E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.
GerryAZ
Gold Member
Posts: 3464
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: Propilot and steering

Electric power steering on the LEAF is contained in the steering column--no hydraulic pump/reservoir involved.

I don't often use Propilot on my 2019 SL Plus, but test it once in a while. It seems to have been programmed to match the characteristics of the OEM Michelin Energy Saver A/S tires. The replacement tires I use are much better quality and yield heavier steering feel. Propilot hunts under some conditions now--does not respond quickly enough to keep the car in the lane, then overcorrects until it encroaches on the opposite lane marker, then overcorrects back in the other direction. This continues until I take control to keep the car centered in the lane. It happens under various road conditions. I think the heavier steering feel of the Michelin Cross Climate 2 tires I have now (and the Bridgestone DriveGuard run flat tires I had before) track straighter so the Propilot does not apply enough steering torque to change direction initially and then overshoots in each direction trying to correct itself.
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
DougWantsALeaf
Posts: 3476
Joined: Fri May 10, 2013 8:21 pm
Delivery Date: 18 May 2013
Leaf Number: 407811
Location: Chicago North Side

Re: Propilot and steering

I have crossclimate2s for a few more weeks on my Leaf with PP, so will watch for that when using the system.

If find the steering for both the Energysavers and the crossclimate2s to be heavier than the steering on our S+.
2019 S Plus (92.7% SOH) & 2019 SV Plus (90.6% SOH) Both Silver
2013 Leaf SV sold 2019
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

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