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40 (16+12+12) pin QuadLock Fakra Head Unit / Car Stereo connector layout
40 (16+12+12) pin QuadLock Fakra Head Unit / Car Stereo connector
p/n 4L0035646 (minimal), 4L2035670G, 8R1035670M (maximal)

Maximum configuration. 

p/n 4L2035670C, 4L2035670E, 4L2035670J, 4L2035670H, 4L2035670G, 4L2035670, 4L2035670A, 4L2035670B, 4L2035670K, 4L2035670L

Top right connector (GSM Antenna Connector) Blue Connetor (GPS), green connector (CVBS TV Tuner input)

Average Configuration.

p/n 8T2035666

Minimal Configuration.

p/n 4L0035646 , 4L0035646X, 4L0035646A, 4L0035646AX, 4L0035646B, 4L0035646BX

16 pin A connector

Pin
Number
MMI with minimal equipment MMI with average equipment MMI with maximum equipment
1 LF mute from preliminary setup for cell phone preparation N/C   LF mute from preliminary setup for cell phone preparation
2 Voltage supply to Multimedia Control Head
3 Wake UP to multimedia system control head 
6 Reset to multimedia system control head
5 N/C N/C Switch-on signal for the Cellular Telephone Amplifier
6 Reset to the Multimedia System Control Head
7 Ring-break diagnostic cable
9 N/C N/C Switch-on signal to Telephone Baseplate
10 Data from multimedia system control head
11  Data to the multimedia system control head
12  Terminal 31 (GND)
13 N/C N/C DIAG signal from Telephone Baseplate
14 Reset from multimedia system control head
15 Terminal 30 (BAT+)
16 Ground (GND) to multimedia system control head

12 pin B connector (blue)

Pin
Number
MMI with minimal equipment MMI with average or maximum equipment
2   Microphone IN (+) for the microphone unit in front roof module (Right)
3   Microphone IN (-) for the microphone unit in front roof module (Right)
5   CVBS wire (-) from Rear View Camera System Control Module
8 Microphone IN (+) for the microphone unit in front roof module Microphone IN (+) for the microphone unit in front roof module (Left)
9 Microphone IN (-) for the microphone unit in front roof module Microphone IN (-) for the microphone unit in front roof module (Left)
11   CVBS wire (+) from Rear View Camera System Control Module

12 pin C connector (green)

Pin
Number
MMI with minimal, average  or maximum equipment
1 LF-In ground
2 Right LF-In
3 USB (+5V) 
4 USB (ground)
6 Detect 
7 Left LF-In
8 LF-In ground shielding
9 CVBS cable (+)
10 CVBS cable (-)
11 iPod data
12 iPod data

4 pin display unit Connector 

Pin
Number
Function
1 LVDS (-)
2 LIN
3 LVDS(+)
4 Earth

 4 pin USB Connector

Pin
Number
Function
1 D+
2 iPod detected
3 D-
4 Earth

Pins not mentioned are not connected. 

 

This is the same setup as the A & S models 3, 5, 6, 7, 8... 

4 pin Head Unit LVDS shaped connector layout
4 pin Head Unit LVDS shaped connector
According to 2 reports in our database (2 positive and 0 negative) the Audi (2008-2015) Q5, Q7 MMI 3G (3G+) Unit pinout should be correct.

Is this pinout
Audi (2008-2015) Q5, Q7 MMI 3G (3G+) Unit visual pinout:click to enlarge
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