Forgot to add: In 2011 we had a meeting with the Leaf's Chief Engineer;
Hidetoshi Kadota, and I explained this problem and asked why no heat pump?
So in 2013 they rolled out a heat pump, and on the base models added a
switch to disable the PTC coolant heater.   So only 2011 & 2012 models
suffer from this.

On Thu, Jan 9, 2025 at 11:56 AM (-Phil-) <p...@ingineerix.com> wrote:

> Pre 2013 has a serious problem where the liquid heater comes on if the
> climate control is on at all, there was no way to stop this w/o completely
> turning off the CC.   I used to sell a mod to change this.
>
> https://www.youtube.com/watch?v=ykjgnrZTF2c
>
> Sadly, the schematic and instructions were lost in a server crash, so no,
> I can't share it, but it was basically just installing a transistor and a
> few discretes inside the HVAC control module.  We sold these as an advanced
> replacement where we sent you a modified unit, and you sent the old one
> back.   Sadly, There isn't enough business anymore to make it work.  If I
> still had the schematic, I'd release it in the public domain.
>
> On Thu, Jan 9, 2025 at 11:44 AM Cor van de Water <cor.vandewa...@gmail.com>
> wrote:
>
>> I have a 2012 also and generally avoid using the PTC heater that warms up
>> the liquid that flows through the heater core.
>> I *so* wished that Nissan had skipped the liquid and instead heated the
>> air directly, so we would have had *instant* heat in the cabin.
>> I have the cold weather package on my Leaf and between the steering wheel
>> heater and the seat heaters, we can stay reasonable comfortable on even
>> longer trips (we regularly make 100 mi one way trips and since the car has
>> 230 mi range when drive carefully, due to its 2019 62kWh pack, I prefer to
>> make the entire 200 mi day trip on a single charge, so low accessory
>> consumption is preferred. Heating the entire cabin would eat too much into
>> the range.
>> Cor.
>>
>> On Thu, Jan 9, 2025, 11:09 AM (-Phil-) via EV <ev@lists.evdl.org> wrote:
>>
>>> Heat pump was introduced in 2013 and equipped on SV or SL models.
>>> Starting
>>> in 2018 they made it optional on SV.  I don't know what the recent models
>>> are like.
>>>
>>> On Thu, Jan 9, 2025 at 11:03 AM redscooter via EV <ev@lists.evdl.org>
>>> wrote:
>>>
>>> >   how do I know which years/ trims have the heating heat pump.
>>> >
>>> > like from 2013 - 2018  to 2019 to current
>>> >
>>> > is there certain trim models?
>>> >
>>> > were tried of a cold old  2012
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