Is anyone using the leaf PTC cabin air heater? I have found info for the coolant heater but have been searching high and low for details to control the air heater with no luck. This one is out of a 2019 part number 27143-3NK1B
Re: Leaf PTC Cabin Air Heater
Posted: Tue Dec 30, 2025 5:43 am
by arber333
cnstrct wrote: ↑Mon Dec 29, 2025 11:30 pm
Is anyone using the leaf PTC cabin air heater? I have found info for the coolant heater but have been searching high and low for details to control the air heater with no luck. This one is out of a 2019 part number 27143-3NK1B
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Could be this link? He is also refering to LIN protocol for "dry" heater...
Thanks arber333, looks like you're right, they do refer to a dry heater with separate ino file, thanks!
UPDATE. I am also sharing controller code for "dry" PTC heater (from LEAF made after 2013). It was tested and reported as fully working. Please only use it if you using PTC in custom project and not in LEAF vehicle. As LEAF made after 2013 has two other slave modules connected to LIN bus.
Hello. I am new to this forum and seem to have hit a wall implementing control for the Leaf PTC Cabin Heater. Were you able to get this working? I get similar LIN bus messages from the heater and it doesn't heat up.
Re: Leaf PTC Cabin Air Heater
Posted: Mon Jan 12, 2026 12:05 am
by cnstrct
Sorry @Dddrewshki I haven't had a chance to try it yet.