Removing and installing fresh air blower control unit J126 and fresh air blower V2 — AUDI
Removing and installing fresh air blower control unit J126 and fresh air blower V2 on Audi: factory workshop procedure.
Workshop procedure for AUDI — the factory write-up, straight from real workshop data.
📋 Procedure
Removing and installing
fresh air blower control unit
J126
and
fresh air blower
V2
Removing
Remove the glove compartment
General body repairs, interior
Rep. gr.
68
.
Remove the screw-type clips
A
(different versions
C
and
D
) and detach the insulating mat
B
.
Remove the bolt
A
(if fitted).
Unfasten any cable ties with which the wiring harness is attached to the housing of the fresh air blower
C
.
Release the catch
B
and turn the housing of the fresh air blower
C
in arrow direction.
Note
Sealing compound may have been applied to the connection between the housing of fresh air blower
C
and the air conditioning unit. Greater force is then required to turn the housing.
The housing
C
accommodates the integrated
fresh air blower
V2
and the
fresh air blower control unit
J126
. On the version fitted up to Model Year 2007, the two components form a cast assembly and can thus not be replaced separately
Electronic parts catalogue
.
WARNING
The heat sink at the
fresh air blower control unit
J126
may be hot.
Remove the housing of the fresh air blower
C
from the air conditioning unit.
Caution
Do not grasp hold of the impeller of the
fresh air blower
V2
. Applying force to the impeller or moving the balancing weights attached to the impeller could cause imbalance and thus operating problems.
Unplug the connector
D
.
Installing
Re-install all parts removed in reverse order, paying attention to the following:
Note
On installation, check correct positioning of the fresh air blower in the air conditioning unit.
After installation, check the position of the housing for the fresh air blower in the air conditioning unit as well as operation of the
fresh air blower control unit
J126
.
Interrogate the event recorder of the operating and display unit,
Climatronic control unit
J255
and erase any faults displayed
"Guided fault-finding" function of vehicle diagnostic, testing and information system VAS 5051.
Perform basic setting and final control diagnosis for the air conditioner and interrogate the event recorder again
"Guided fault-finding" function of vehicle diagnostic, testing and information system VAS 5051.
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.