
I N S TA L L A T I O N I N S T R U C T I O N S
AxxessInterfaces.com © COPYRIGHT 2023 METRA ELECTRONICS CORPORATION REV. 8/24/23 INSTAXTC-A12
ignition, disconnect the negative battery
terminal before installing this product.
Ensure that all installation connections,
especially the air bag indicator lights, are
plugged in before reconnecting the battery
or cycling the ignition to test this product.
NOTE: Refer also to the instructions included
with the aftermarket accessory before
• Crimping tool and connectors, or solder gun,
solder, and heat shrink • Tape • Wire cutter
LD-AX-SWCX-AU1 ...............................................2
LD-AX-SWCX-AU2 ................................................3
Programming 4 .........................................................
Troubleshooting.....................................................5
Audi Data Interface with SWC 2002-2013
• Provides accessory power
• Provides illumination output
• Provides wires for multimedia
radios (park brake, reverse,
• Retains audio controls on the
• Designed to be compatible
with all major radio brands
• Auto detects vehicle type, radio
connection, and preset controls
• Ability to dual assign steering
• Retains memory settings even
after battery disconnection or
interface removal (non volatile
A3 2006-2013(1) ...............................................
A4/RS 4/S4 (with NAV) 2005-2008 .................
A4/RS 4/S4 2007-2008 .....................................
A4/RS 4/S4 2006 ...............................................
TT 2008-2013 ......................................................
A3 2006-2007(2) ..............................................
A4/S4 2002-2006(3) ........................................
A6 2004 ..............................................................
Allroad 2004-2005 ............................................
TT 2002-2006 .....................................................
(1) With either Symphony Plus or NAV radio.
(2) With Concert radio (without NAV)
(3) With Symphony radio (without NAV)
Visit AxxessInterfaces.com
for more detailed information about the product
and up-to-date vehicle specific applications