Audi A4/S4/RS4 (B8) LHD 2008-2012 aftermarket radio upgrade

Aftermarket GPS Navigation Head Unit is specially designed to upgrade Audi A4/S4/RS4(B8) factory radio system. It has the same plugs and harness as the original radio, plug, and play. This product only replaces the original LCD screen unit and retains the factory AUDI FM/CD head unit, so the original Audi car computer/CD/FM/AM/Sirius/XM will still work as before.

 Android Version: 12.0 (genuine specs). 

Compatible vehicles:
Audi A4 B8 (Type 8K: 2008 2009 2010 2011 2012)
Audi S4 B8 (Type 8K: 2009 2010 2011 2012)
Audi RS4 B8(Type 8K: 2008 2009 2010 2011 2012)
Before placing an order, you need to know the following items about your car:
1. What is the current radio system on my car?

Send a photo of the dashboard(radio system) to info@sigmacarstereo.com if you are not sure about compatibility.

Please send a photo of the yellow part as shown in the below picture. The fascia bezel for 2008-2012 and 2012-2016 is different.

2. If your car has the MMI 3G system, then you can use the original joystick and touchscreen to operate the new Android screen.
You can still use the original joystick to operate the original Audi screen. The touchscreen does not operate the original Audi screen.
3. Please press the MEDIA button on the radio panel and check the audio source options.
If your car has the AUX(External audio input), then you don't need the AMI-AUX cord.
If your car has the AMI, then you need the Audi AMI-AUX adapter cord. Please add it from the add-ons box when placing the order. Otherwise, there will be no audio after installing our product.

Factory radio system:

Installation Photos:

Is this product plug-and-play? Do I need to program or code my Audi? Do I need to buy an external GPS antenna? Can I still check the car info on the OEM screen?
Answer: Yes, it is plug-and-play, it has the same plugs and harness as the original Audi system. You do not need to program your car. All necessary accessories are included in the package. You do not need to buy anything else to make it work. You can still check the original Audi car info as before.

How do I switch the new upgrade system to the original Audi interface?
Answer: Please tap the “Original” icon on the home screen to switch to the original Audi interface.

How do I switch the original Audi interface to the new upgrade system?
Answer: Please tap the screen.

Why it shows a black screen with no signal when tapping “Original” to switch back to the original Audi interface?
Answer: Please check the CAR-LVDS port. Make sure you connect the LVDS plug (removed from the OEM screen) to the new screen.

Why there is no audio from the new upgrade system? 
Answer:
1. Please press MEDIA button on the raido panel and check audio source options.Make sure the External Audio input(AUX) is activated.

Note if your car has the AMI option instead of AUX, then you need to plug the Audi AMI-AUX cord(this cord is sold separately) into the AMI port in the glove box on the passenger side. After plugging this cord, the AMI will change to AUX on the screen.

2. Then tap the screen to access the new upgrade system. You should be able to hear sound.

Where should I mount the main metal box? The original LVDS cord is too short to mount in the glove box?

Please take apart the glove box on the passenger side and there is a hole that allows you to put the metal box hidden behind the screen. Then the LVDS cord is long enough.

Why it does not power off when I shut down the car?
Answer: Please make sure the CANBUS connector is connected behind the climate control panel as shown below.