ydrape
Posts: 39
Joined: Sat Jul 01, 2017 10:50 am
Delivery Date: 11 May 2017
Leaf Number: 329614
Location: Montréal, Qc

Re: Brakes Fail upon Powering On

Wed Dec 23, 2020 6:14 pm

Your estimate is in the order of the repair made under warranty for my car.

If you can stop the car without having the bad noise, your problem is probably in the category «Intermittent».

You don't have to pay for repairing a defect for wich Nissan has aknowledged and proceeded to a recall (in Canada).

I think the recall was also made in USA.

Be safe!
2015 SL Leaf made 03/2015
purchased used May 2017; 12/12 bars
Sts Bat: aHR = 58, SOH = 93% Hx = 89%

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bobkart
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Posts: 147
Joined: Sat Dec 22, 2018 12:17 am
Delivery Date: 14 Dec 2018
Leaf Number: 307853
Location: Pacific Northwest
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Re: Brakes Fail upon Powering On

Wed Dec 23, 2020 6:21 pm

Thekuai wrote:
Wed Dec 23, 2020 6:04 pm
It will still allow you to drive normal otherwise. The brake will still somewhat work with increased effort and pedal travel. You will just look like an amateur.
Then it looks like my intelligent brake controller hasn't failed. There's no detectable change in braking behavior after getting the car back, including no increased effort or pedal travel. I think the last 'proof' is the additional Regen bubbles I can get on a gradual downhill slope by applying light brake pedal pressure . . . I just got back from confirming this to be the case.
Pearl White 2016 Leaf S, 24kWh battery
Silver Enkei Racing RPF1 16x7 Wheels
Ohmmu T12403 LiFePO4 12V Battery
Nissan All-Season Floor Protectors

ClipperCreek LCS-25P
2x REC 325Wp Solar Panels
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bobkart
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Posts: 147
Joined: Sat Dec 22, 2018 12:17 am
Delivery Date: 14 Dec 2018
Leaf Number: 307853
Location: Pacific Northwest
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Re: Brakes Fail upon Powering On

Wed Dec 23, 2020 6:30 pm

ydrape wrote:
Wed Dec 23, 2020 6:14 pm
If you can stop the car without having the bad noise, your problem is probably in the category «Intermittent».
Agreed. But that leaves out the root cause of the problem (intermittent or not). From what I've read in this (and other related) threads, a failing 12V battery can trigger the problem, or at least symptoms of it. CANBUS flakiness brought on by a failing 12V battery can lead to DTCs that suggest the ABS (or Intelligent Brake Controller) has failed, when it actually hasn't. Distinguishing between actual failure and only apparent failure is key, and my position at this time is that, if at any time the ABS/IBC can be shown to be functioning, that strongly suggests ('proves'?) that the part hasn't actually failed. Of course I mean 'failed' in the sense that the state can't be reversed back to 'not failed' except by repair or replacement of the part in question. I welcome counterarguments to that position, as it's not something anyone would want to be wrong about.
Pearl White 2016 Leaf S, 24kWh battery
Silver Enkei Racing RPF1 16x7 Wheels
Ohmmu T12403 LiFePO4 12V Battery
Nissan All-Season Floor Protectors

ClipperCreek LCS-25P
2x REC 325Wp Solar Panels
10kWh LiFePO4 Battery Bank
BAFX OBD2 Reader, LeafSpy Pro

GerryAZ
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Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: Brakes Fail upon Powering On

Wed Dec 23, 2020 6:33 pm

Bobkart,

You should be fine with a 2016 (with a new 12V battery). A weak 12V battery will not maintain sufficient voltage during the startup process to keep all of the control and communication modules functioning properly even though it may not test really bad. The 2015's did have some intelligent brake controller issues and I eventually had mine replaced (under the aftermarket extended warranty that I purchased when I bought the car) after getting tired of periodically resetting the DTC's and disconnecting/reconnecting the 12V battery to restore normal operation. It eventually got to the point of happening at least once a month before I had the intelligent brake controller (includes the master cylinder) replaced. I saw the dealer invoice that was close to $3,000 so the aftermarket warranty paid for itself.

Note for reference: The hydraulic brakes still work without electric assist, but the pedal will get close to the floor (may feel like it is on the floor because the pedal becomes really hard to press) and require much higher effort without assist. Also, there was a recall on the 2015 intelligent brake controller that was related to cold weather (just a software/firmware update).
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

ydrape
Posts: 39
Joined: Sat Jul 01, 2017 10:50 am
Delivery Date: 11 May 2017
Leaf Number: 329614
Location: Montréal, Qc

Re: Brakes Fail upon Powering On

Wed Dec 23, 2020 6:34 pm

Thekuai wrote:
Wed Dec 23, 2020 6:09 pm
Is the recall released yet? I paid out of pocket and I'm wondering if I can be refunded
You can check here.

https://www.nhtsa.gov/recalls
2015 SL Leaf made 03/2015
purchased used May 2017; 12/12 bars
Sts Bat: aHR = 58, SOH = 93% Hx = 89%

User avatar
bobkart
Forum Supporter
Posts: 147
Joined: Sat Dec 22, 2018 12:17 am
Delivery Date: 14 Dec 2018
Leaf Number: 307853
Location: Pacific Northwest
Contact: Website YouTube

Re: Brakes Fail upon Powering On

Wed Dec 23, 2020 6:39 pm

GerryAZ wrote:
Wed Dec 23, 2020 6:33 pm
You should be fine with a 2016 (with a new 12V battery).
Great news; thanks Gerry!
Pearl White 2016 Leaf S, 24kWh battery
Silver Enkei Racing RPF1 16x7 Wheels
Ohmmu T12403 LiFePO4 12V Battery
Nissan All-Season Floor Protectors

ClipperCreek LCS-25P
2x REC 325Wp Solar Panels
10kWh LiFePO4 Battery Bank
BAFX OBD2 Reader, LeafSpy Pro

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