Assembling auxiliary heater control unit J364 and burner element — AUDI
Assembling auxiliary heater control unit J364 and burner element on Audi: factory workshop procedure. Full factory text, tools and checks.
Workshop procedure for AUDI — the factory write-up, straight from real workshop data.
📋 Procedure
Assembling
auxiliary heater control unit
J364
and burner element
Note
Depending on the version of the auxiliary heater design (with or without
fuel shut-off valve
N109
A
), different versions of the
auxiliary heater control unit
J364
C
and the
metering pump
V54
are fitted
Chapter
and
Electronic parts catalogue
.
The installation of a
fuel shut-off valve
N109
A
in the fuel line of the burner element
B
is currently only planned for vehicles with diesel engine (only installed on VW vehicles; introduction for Audi vehicles not yet finalised)
Electronic parts catalogue
.
Currently no auxiliary heater with a
fuel shut-off valve
N109
A
is installed in Audi A3 vehicles during production (introduction not yet finalised). However it is possible that individual vehicles have been retro-fitted with an auxiliary heater with a
fuel shut-off valve
N109
; therefore it is important to pay attention to the correct version.
Prior to assembly, remove any combustion residue from or out of burner element
B
.
Pay attention to correct assignment of
auxiliary heater control unit
J364
A
and burner element
B
(different versions).
This illustration shows burner element for diesel (with wiring and connector for
fuel pre-heating heater element
Z66
).
If burner element is defective,
glow plug with flame monitor
Q8
must also be renewed (currently not available as a separate replacement part)
Electronic parts catalogue
.
Renew burner element if deposits have formed which affect heating operation and cannot be removed with workshop equipment.
Version for petrol (without wiring and connector for
fuel pre-heating heater element
Z66
) features a connector
E
with no wiring (to stop ingress of dirt and moisture into control unit via connection).
Assemble
auxiliary heater control unit
J364
(with combustion air blower)
A
and burner element
B
as shown, paying particular attention to correct installation position of grommet
C
.
Plug in connectors
D
(to
glow plug with flame monitor
Q8
) and
E
(to
fuel pre-heating heater element
Z66
, diesel version only) at control unit.
TorqFix answers live for your specific car — tell it the engine code and it serves the matching sequence, torque figures and wiring for that exact variant.
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Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.