Posts: 1
Joined: Sun Mar 10, 2019 11:34 am
Delivery Date: 01 Sep 2018

has your Leaf's PTC heater failed? reply here

Sun Mar 10, 2019 11:39 am

Hi all,

I am looking to gather a list of customers affected by premature PTC heater failures in their Leaf.

I have anecdotal evidence that many Nissan Leaf customers have had their PTC heater fail under extreme cold conditions.

Faulted part number is: 27143-3NF1A

If you have had this problem, please post here with as much detail as you would like.

Ideally include:
- year+model of leaf
- geographical location / area
- date purchased
- date of PTC heater fault and quoted cost to repair
- if you actually have paid for repair (or under warranty)
- any worth-mentioning extended warranty
- external refs/links
- etc

Thank you.

Also being tracked on reddit: ... urce=share

Posts: 19
Joined: Mon May 07, 2018 9:52 am
Delivery Date: 31 Mar 2018
Leaf Number: 301349
Location: Saskatchewan, Canada

Re: has your Leaf's PTC heater failed? reply here

Sun Mar 10, 2019 1:10 pm

I had PTC heater failures in extreme cold on February 5th and 7th, 2019.

-2018 SL
-Saskatchewan, Canada
-purchased March 31st, 2018
-codes read and sent to Nissan engineers February 8th
-new PTC heater and wiring loom ordered February 14th (have not arrived yet)
-should be a warranty repair

Both failures happened after the car was parked outside for several hours in temperatures below -30C. The first time the battery was at 23% SOC and the second it was at 79%. I have driven in these temps many times this winter and the heater has worked perfectly before and since the failures so I'm not convinced it is a physical PTC "failure". To me it seems more like a software/battery management issue or, if the wiring loom was run without enough slack, it's possible the contraction in extreme cold could cause some issues.
2018 Leaf SL, 28,120 km, SOH - 94.08%, Hx - 118.08, AHr - 108.606

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