Brakes Fail upon Powering On

[ggtronic]

same issue feb. 7 2018 in Québec Canada : car was outside -10degC , went out to eat breakfast , 30 minutes later get out of restaurent and my 2015 Leaf had almost no break : break pedal do nothing for the first 75% action and the last 25% throw finally block the wheels... strange pump+clicking noise on the passenger side firewall while braking

I do not believe into 12v battery problem at ALL :
my 12v battery was replace under warranty 3 month ago

i do not believe into brake fluid problem :
air or water would create a different scenario and would gradually happend instead of instant problem

i suspect the actuator to failed because of humidity problem in relays or contact ?
deffinitely look like software/electric problem !

[RegGuheert]

i suspect the actuator to failed because of humidity problem in relays or contact ?
deffinitely look like software/electric problem !

That would be my guess, too. Have you not had the fix applied, yet?

BTW, I thought part of the fix was to have the software increase the voltage of the charging system under certain cold conditions to try to help resolve this issue.

[ElectricEddy]

i suspect the actuator to failed because of humidity problem in relays or contact ?
deffinitely look like software/electric problem !

That would be my guess, too. Have you not had the fix applied, yet?

BTW, I thought part of the fix was to have the software increase the voltage of the charging system under certain cold conditions to try to help resolve this issue.

NTB15-089
http://newyork.cbslocal.com/2016/03/12/ ... ke-recall/
Check mait records to ensure this has been done

[ydrape]

i suspect the actuator to failed because of humidity problem in relays or contact ?
deffinitely look like software/electric problem !

That would be my guess, too. Have you not had the fix applied, yet?

BTW, I thought part of the fix was to have the software increase the voltage of the charging system under certain cold conditions to try to help resolve this issue.

NTB15-089
http://newyork.cbslocal.com/2016/03/12/ ... ke-recall/
Check mait records to ensure this has been done

I had exactly the same problem as ggtronic last november when it was 32 F and relatively high humidity. The car was towed to dealer. Later, I talked about the recall to the technical adviser and after reading the DTC, he was categoric that the problem has no relation to the recall. To have all DTC removed, they had to replace the Brake Master Cylinder, the ABS Hydraulic Assembly Module and Harness, all under guarantee. Since that, everything is OK with the car. Before i had the brake failure, nothing was wrong with this car for the 6 months I had it and the mileage was around 10,000.

[CTinker]

I had the same problem outlined in this post.

The DTC’s from Leafspy were: C118a 0109 and C1A61 0109

“Codes stored C118a, C1A61 History codes. Checked for power and ground to control unit, OKAY. Will need to start with new brake controller and then test further”
Estimate $2395.84 for new Brake Controller.

They said the battery was fine and I haven’t seen the voltage go below 12v on Leafspy. After reading the data they mentioned that the Brakes were being supplied with power and then it just dropped.

The car already had the brake controller reprogrammed in 2015. I believe that is the voluntary recall.

The car runs fine now and I can’t see myself spending $2400 to fix a problem that isn’t occurring now and might not even be fixed. I filed a complaint on Safercar.gov as suggested in the post.

Is there any other fix? Should I shell out the money for a new brake controller? My only plan moving forward would be to replace the battery next winter.

[RegGuheert]

Is there any other fix?

I would purchase a high-quality trickle charger and keep your 12V battery topped off, particularly in cold weather.

Should I shell out the money for a new brake controller?

I wouldn't until I addressed the possibility that the 12V battery may have been low. (LeafSpy and Nissan technician comments not withstanding.)

[alozzy]

@CTinker The NTB15-089 recall should be fixed for free. I'd take it to a dealer, don't mention that you have any brake problems and tell them you want the recall work done. Once the recall work is completed (software fix), see if your brake issues go away. Only if they return then consider other options.

[ggtronic]

i repeat : 12v battery are not the cause of this bad failure...

dealer kept my 2015 Leaf for 3 days with no fix ... they believe the
IPDM might be the problem with intermitent contact or load protect fail ?
283$cad for replacement ... i'm waiting for a free recall fix unless the problem come back too often...


.


video of my problem :
https://youtu.be/3SCwORR3qbQ

[pinkbutterfly10]

I have exactly the opposite problem. Brakes lock up on powering on. Had it dragged on and off a flatbed to the dealer. Dealer seems clueless. I just replaced the 12v battery hoping that's the problem. Will wait and see.

[TLeaf13]

i repeat : 12v battery are not the cause of this bad failure...

dealer kept my 2015 Leaf for 3 days with no fix ... they believe the
IPDM might be the problem with intermitent contact or load protect fail ?
283$cad for replacement ... i'm waiting for a free recall fix unless the problem come back too often...


.


video of my problem :
https://youtu.be/3SCwORR3qbQ

My 2013 Leaf makes the very same noises. I removed the VDC fuse which stopped the noises, but the brakes still require way more pressure on the pedal than they should. A new 12V battery did not help this problem. I wrote about it here: http://mynissanleaf.com/viewtopic.php?f ... 4&p=509048

I also made a video, but haven't yet posted it. The dealer wants $2800+ to maybe fix it (they wrote further testing may be needed).