In fact, it's just the canbus mode setting problem in factory settings. Sorry for the trouble brought to you.
If you have the problem which your original SWC don't work after installing our unit 27-AQVW71, you just need follow the below steps to solve it.
Please go to Car Settings--Factory settings(input passcord 1617)--canbus setting, choose the canbus mode to "volkswagen-non mqb-raise", then click the right corner of the screen to save, the unit will reboot itself, please try to check if the PDC and steering wheel control works.
1.Click “CarSetting”
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2.Click “factory setting”
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3.input password”1617”
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4.Click "CAN type set" to enter canbus setting
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5.Slect Car Band "Volkswagen"--Model"Non MQB"--"Version"
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6.Select canbus supplier "Raise",and click "Save"
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7.restart the device
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PS: Please don't change anything in factory settings, cause it may lead some function not working or even make the system crash. In case these problem happen, you may break the warranty.
Any further problem about the 27-AQVW71, please contact us or write to our customer service email box "support@autopumpkin.com"
Regards