Rear traffic alert/Blind spot monitoring not availble

[spvw100]

2015 VW Golf Sportwagon Mk7 1.4TSI with DAP

The two driver assist features as mentioned in the title have stopped working and spit out this error on the dash when I try turning them on. All the radar sensors are working and this issue has appeared out of no where. I'll likely need to take it to a VW dealership for them to repair/recalibrate the system but I'm afraid of the potential cost.

[kiddiecobbler]

I had the same problem with the same car (but diesel). Other errors came up on the dashboard too.
After a bit of research and checking, I measure the battery voltage which turned out to be a bit on the low side - just over 12 volts.
I recharged and the the errors disappeared. It happened again some time later so I recharged the battery again - fixed the problem.
Bottom line is that my battery is the original and it is wearing out. I turn off the "auto off" engine function now.
This could be your problem, you will need a multimeter to check voltage, should be up in the high 12 volts or 13