Audi A6 Typ 4G: Trailer Hitch
Overview - Outlet, Towing Recognition Control Module

1 - LED Indicator Lamp
- Trailer Hitch -Locked- Indicator Lamp -K226-, Trailer Hitch
-Unlocked- Indicator Lamp -K227-
- Make sure the trailer hitch is locked correctly
- Removing and installing. Refer to
→ Chapter "LED Indicator Lamp, Removing and Installing".
2 - Mount
- For the cable
- For unlocking the trailer hitch
3 - Upper Frame
- For Towing Recognition Control Module -J345-
4 - Towing Recognition Control Module -J345-
- Removing and installing. Refer to
→ Chapter "Towing Recognition Control Module -J345-, Removing and
Installing".
5 - Connectors
6 - Trailer Socket -U10-
- Removing and installing. Refer to
→ Electrical Equipment General Information; Rep. Gr.96; Trailer Hitch.
- For the connector assignment. Refer to
→ Electrical Equipment General Information; Rep. Gr.96; Trailer Hitch.
LED Indicator Lamp, Removing and Installing
Removing
- Remove the luggage compartment left side trim panel cover.
- Remove the LED indicator lamp -4-
from the cable mount -1- and free
up the electric wire -3-.
- Remove the connector -2- from
the mount and disconnect it.
Installing
Install in reverse order of removal.

Towing Recognition Control Module -J345-, Removing and Installing
- If the control module was replaced, select the "Replace"
function for the respective control module in "Guided Fault
Finding" or "Guided Functions" using the Vehicle Diagnostic
Tester.
Removing
- Remove the luggage compartment right side trim panel cover.
- Disconnect the connectors -2, 3 and 4-.
- Release the tab in direction of
-arrow- and remove the towing recognition control module
-1- from the upper retaining frame.
Installing
Install in reverse order of removal.

READ NEXT:
Socket Illumination Bulb -L42- Removing and Installing, 12 V Socket
-U5-
Special tools and workshop equipment
required
Removing
- Remove the center console storage compartment. Refer to
→&nbs
Overview - Relay Carriers, Fuse Panels and E-Boxes
1 - Nut
3 Nm
Quantity: 2
2 - Screw
3 Nm
Quantity: 4
3 - Engine Control Module
4 - Nut
3 Nm
Quant
SEE MORE:
Applies to: vehicles with diesel engine
The diesel particulate filter filters nearly all of
the soot particles out of the exhaust. The filter
cleans itself automatically under normal driving
conditions. If the filter cannot clean itself (for example,
because you are only driving short distances),
th
General hints
Your Audi requires special handling for towing.
The following information is to be used by commercial
tow truck operators who know how to operate
their equipment safely.
Never tow your Audi. Towing will cause damage
to the engine and transmission.
Never wrap the safety chains or wi