Vag-com

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MMI 2G Bluetooth No Sound or MIC

Q7 Address 77 100900 Telephone MMI 2G

Sometimes after replacing the Bluetooth Module (under the driver seat A8 or Q7), the Phone would pair to the car, but the steering button, sound and microphone don’t work, most of the time, the settings on the Bluetooth module wasn’t done correctly. You do need an OBDII like VCDS (VAG-COM) to enable it again. Read

Replace Audi A8 D3 Battery

After 11 years, my 2006 A8L Varta original battery 4E0 915 105 A 850CCA died over a few weeks and it no longer held charge. I bought a battery from Walmart EverStart Maxx H8 with 900CCA to replace it. The H8 is the same size as group 49 which is smaller than the original Varta

An Open-Circuit Test On MMI 2G MOST Bus and VCDS Read Out Results

MMI 2G Diagram

Audi MMI 2G & 3G MOST bus is very simple but yet very hard to diagnose which components connected to the bus is faulty due to the serial optical connections. If the system is not thoroughly tested and diagnosed, many good parts can be replaced in the process. This is a simple test just show that an open