Removing and installing auxiliary air heater Airtronic D3 — VW
Removing and installing auxiliary air heater Airtronic D3 on VW: factory workshop procedure. Full factory text, tools and checks.
Workshop procedure for VW — the factory write-up, straight from real workshop data.
📋 Procedure
ℹ️ Torque figures below come verbatim from workshop data — always cross-check against your vehicle's factory manual before final tightening.
Removing and installing auxiliary air heater Airtronic D3
Note
A manufacturer's plate is fitted on the auxiliary air heater unit. This plate provides information about the type of auxiliary air heater installed in the vehicle
Fig.
.
Note
The auxiliary air heater Airtronic D3 with bracket must be removed only if the bracket is damaged.
Removing without bracket
Anchor
Removing
Special tools and workshop equipment required
Torque wrench
V.A.G 1410
Before beginning repair work, perform the following steps:
Disconnect
10-pin connector
T10ba
1
from auxiliary air heater under front right seat.
Remove right underbody trim
General body repairs, exterior
Rep. gr.
66
Underbody covers; Assembly overviews
Guide wiring harness through opening in underbody.
CAUTION
The fuel system is pressurised.
Danger of injury through fuel spray.
Wear eye protection.
Wear protective gloves.
To release pressure, wrap a clean cloth around the connection and carefully loosen the connection.
Separate fuel line
arrow
from auxiliary air heater and seal fuel line.
Release cable ties to unions
2 and 6
.
Remove bolts
1
.
Note
Do not remove bolts
1
completely.
Remove bolts
4
.
Remove auxiliary air heater
3
as shown in figure
A
.
Manufacturer's plate
Note
Only the version Airtronic D3 is factory installed in the Transporter models 2010 ►.
Date of first use is entered on lower part of manufacturer's plate.
The heat exchanger can be used for 10 years and must be replaced after date has expired.
Removing without bracket
Before beginning repair work, perform the following steps:
Disconnect
10-pin connector
T10ba
1
from auxiliary air heater under front right seat.
Remove right underbody trim
General body repairs, exterior
Rep. gr.
66
Underbody covers; Assembly overviews
Guide wiring harness through opening in underbody.
CAUTION
The fuel system is pressurised.
Danger of injury through fuel spray.
Wear eye protection.
Wear protective gloves.
To release pressure, wrap a clean cloth around the connection and carefully loosen the connection.
Separate fuel line
arrow
from auxiliary air heater and seal fuel line.
Remove exhaust system
Chapter
.
Loosen clip to air intake silencer at auxiliary air heater.
Release cable ties on connecting pieces
1
to air ducts and push them in direction of
arrow
.
Unscrew collar nuts
3
.
Remove auxiliary air heater
1
from bracket
2
.
Installing
Install in reverse order.
Tightening torques
Component
Specified torque
Bolts for securing auxiliary heater to underbody
8 Nm
Collar nuts on auxiliary heater
8 Nm
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.