openinverter.org wiki - User contributions [en]

VAG PTC Air Heater

2025-12-07T17:56:49Z

PracticalEVConv: Added some notes for the high voltage connector in VAG vehicles. Even if the connector part number is the same, there are different variants of them. Some will require modifications (e.g. cutting the top guides) for the connector to fit.

[[Category:VAG]]
[[File:VW-1EA963581-PTC-heater.jpg|348x348px|thumb|VW 1EA963581 PTC heater]]

==Overview<ref name=":0" />==
PTC heater assembly found in VW ID series (ID.3, ID,4, ID.Buzz, etc.), as well as other VAG EVs (Seat, Skoda, Audi, etc).

*According to VW, the nominal voltage is 150 to 475V, but findings suggest it’s usable from 180VDC.
*It is made by Valeo and has a operational range between 0 and 6kW.

==Part Numbers==
{| class="wikitable"
|+
!VAG Part Number
!Vehicles Used it
!Tested?
!
|-
|1EA963581AQ
|
|No
|
|-
|1EA963581BM
|
|No
|
|-
|1EA963581BN
|
|No
|
|-
|1EA963581C
|
|No
|
|-
|1EA963581D
|
|Yes
|
|-
|1EA963581F
|
|Yes
|
|-
|1EA963581G
|
|No
|
|}

==Connectors==
[[File:VW-1EA963581-PTC-heater(connections).jpg|thumb|VW 1EA963581 PTC heater connections<ref>The High-Voltage System in the ID.4: https://static.nhtsa.gov/odi/tsbs/2021/MC-10186407-0001.pdf</ref>]]

===High-Voltage Connection===
TE HVU 280 series

* Mating housing: 1-2318082-2 (key B)
*Contacts:
**TE-NO: 2-968859-3 (WIRE SIZE 4mm²)
**TE-NO: 2-968857-3 (WIRE SIZE 2.5mm²)
*Seals:
**TE-NO: 828985-1 (WIRE SIZE 4mm²)
**TE-NO: 963292-1 (WIRE SIZE 2.5mm²)
Or it can be salvaged at a junk yard from these part numbers:

* VW 1EA 973 702 X (The connector itself. Note: The 5119B variant fits the PTC perfectly unlike 3220B that requires some minor modifications)
* VW 1EA 971 475 B (A HV cable that connects to the PTC Heater. It uses the correct 5119B variant)

===Low-Voltage Connection===
VW 1J0 973 703

=== Potential Equalization ===
M6x1 lug

==Dimensions and 3D Model==
3D Model available at GrabCAD: <ref>3D Model available on GrabCAD: https://grabcad.com/library/vw-idx-air-ptc-1</ref>

heater matrix is 244mm long x 204mm wide x 27mm thick

the length of the entire unit is 284mm long

==Control==

===EVCreate CAN Gateway<ref name=":0">Volkswagen air PTC heater control via LIN bus: https://www.evcreate.com/volkswagen-air-ptc-heater-control-via-lin-bus/</ref>===

===DIY with Teensy<ref>https://github.com/Tom-evnut/ID3-LIN-Bus/tree/main/Teensy%20Arduino%20Lin%20examples/T4_2Lin_explorer_ID34_PTC</ref>===

==Case Studies==
Volvo P80 heater core adapter (to be published)

<references />
[[Category:Heater Air]]

VAG PTC Air Heater

2025-11-13T17:35:22Z

PracticalEVConv: Added hints where you can salvage the connector from in "High-Voltage Connection". Also tested this myself.

[[Category:VAG]]
[[File:VW-1EA963581-PTC-heater.jpg|348x348px|thumb|VW 1EA963581 PTC heater]]

==Overview<ref name=":0" />==
PTC heater assembly found in VW ID series (ID.3, ID,4, ID.Buzz, etc.), as well as other VAG EVs (Seat, Skoda, Audi, etc).

*According to VW, the nominal voltage is 150 to 475V, but findings suggest it’s usable from 180VDC.
*It is made by Valeo and has a operational range between 0 and 6kW.

==Part Numbers==
{| class="wikitable"
|+
!VAG Part Number
!Vehicles Used it
!Tested?
!
|-
|1EA963581AQ
|
|No
|
|-
|1EA963581BM
|
|No
|
|-
|1EA963581BN
|
|No
|
|-
|1EA963581C
|
|No
|
|-
|1EA963581D
|
|Yes
|
|-
|1EA963581F
|
|Yes
|
|-
|1EA963581G
|
|No
|
|}

==Connectors==
[[File:VW-1EA963581-PTC-heater(connections).jpg|thumb|VW 1EA963581 PTC heater connections<ref>The High-Voltage System in the ID.4: https://static.nhtsa.gov/odi/tsbs/2021/MC-10186407-0001.pdf</ref>]]

===High-Voltage Connection===
TE HVU 280 series

* Mating housing: 1-2318082-2 (key B)
*Contacts:
**TE-NO: 2-968859-3 (WIRE SIZE 4mm²)
**TE-NO: 2-968857-3 (WIRE SIZE 2.5mm²)
*Seals:
**TE-NO: 828985-1 (WIRE SIZE 4mm²)
**TE-NO: 963292-1 (WIRE SIZE 2.5mm²)
Or it can be salvaged at a junk yard from these part numbers:

* VW 1EA 973 702 X (The connector itself)
* VW 1EA 971 475 B (A HV cable that connects to the PTC Heater)

===Low-Voltage Connection===
VW 1J0 973 703

=== Potential Equalization ===
M6x1 lug

==Dimensions and 3D Model==
3D Model available at GrabCAD: <ref>3D Model available on GrabCAD: https://grabcad.com/library/vw-idx-air-ptc-1</ref>

heater matrix is 244mm long x 204mm wide x 27mm thick

the length of the entire unit is 284mm long

==Control==

===EVCreate CAN Gateway<ref name=":0">Volkswagen air PTC heater control via LIN bus: https://www.evcreate.com/volkswagen-air-ptc-heater-control-via-lin-bus/</ref>===

===DIY with Teensy<ref>https://github.com/Tom-evnut/ID3-LIN-Bus/tree/main/Teensy%20Arduino%20Lin%20examples/T4_2Lin_explorer_ID34_PTC</ref>===

==Case Studies==
Volvo P80 heater core adapter (to be published)

<references />
[[Category:Heater Air]]

VAG PTC Air Heater

2025-11-13T17:22:55Z

PracticalEVConv: Changed part number in "Connectors" for "Low-Voltage Connection". The part number "VW 1J0 973 723" belongs to a bigger connector variant which does not fit "1EA963581F" VAG PTC Heater. However the smaller "VW 1J0 973 703" fits perfectly (the 2nd to last number is different). Tested this myself.

[[Category:VAG]]
[[File:VW-1EA963581-PTC-heater.jpg|348x348px|thumb|VW 1EA963581 PTC heater]]

==Overview<ref name=":0" />==
PTC heater assembly found in VW ID series (ID.3, ID,4, ID.Buzz, etc.), as well as other VAG EVs (Seat, Skoda, Audi, etc).

*According to VW, the nominal voltage is 150 to 475V, but findings suggest it’s usable from 180VDC.
*It is made by Valeo and has a operational range between 0 and 6kW.

==Part Numbers==
{| class="wikitable"
|+
!VAG Part Number
!Vehicles Used it
!Tested?
!
|-
|1EA963581AQ
|
|No
|
|-
|1EA963581BM
|
|No
|
|-
|1EA963581BN
|
|No
|
|-
|1EA963581C
|
|No
|
|-
|1EA963581D
|
|Yes
|
|-
|1EA963581F
|
|Yes
|
|-
|1EA963581G
|
|No
|
|}

==Connectors==
[[File:VW-1EA963581-PTC-heater(connections).jpg|thumb|VW 1EA963581 PTC heater connections<ref>The High-Voltage System in the ID.4: https://static.nhtsa.gov/odi/tsbs/2021/MC-10186407-0001.pdf</ref>]]

===High-Voltage Connection===
TE HVU 280 series

* Mating housing: 1-2318082-2 (key B)
*Contacts:
**TE-NO: 2-968859-3 (WIRE SIZE 4mm²)
**TE-NO: 2-968857-3 (WIRE SIZE 2.5mm²)
*Seals:
**TE-NO: 828985-1 (WIRE SIZE 4mm²)
**TE-NO: 963292-1 (WIRE SIZE 2.5mm²)

===Low-Voltage Connection===
VW 1J0 973 703

=== Potential Equalization ===
M6x1 lug

==Dimensions and 3D Model==
3D Model available at GrabCAD: <ref>3D Model available on GrabCAD: https://grabcad.com/library/vw-idx-air-ptc-1</ref>

heater matrix is 244mm long x 204mm wide x 27mm thick

the length of the entire unit is 284mm long

==Control==

===EVCreate CAN Gateway<ref name=":0">Volkswagen air PTC heater control via LIN bus: https://www.evcreate.com/volkswagen-air-ptc-heater-control-via-lin-bus/</ref>===

===DIY with Teensy<ref>https://github.com/Tom-evnut/ID3-LIN-Bus/tree/main/Teensy%20Arduino%20Lin%20examples/T4_2Lin_explorer_ID34_PTC</ref>===

==Case Studies==
Volvo P80 heater core adapter (to be published)

<references />
[[Category:Heater Air]]