Before you did these:
Was everything OK with car battery?In my car, I have installed:
9" touch screen radio
GPS antenna
Backup/reverse camera
alarm system (done by friend).
Could be the alarm system or the 9" touch screen radio that is the cause of the problems.
I do not think any GPS app would cause this problem if the radio is turned off.
You can also test by turning off the app in setting with "Force Stop" and see if that corrects the problem.
But I do not think that is the problem if the radio is completely turned off.
Many ways to troubleshoot a problem.......
I just check with my brother who is a electronic specialist at "VW" and he said seeing that the battery is very new:
Take the battery back and have it tested there could be a bad cell in it and it should be under warranty and get replaced.I installed the new battery in October 2020.
Also while you have the car in have the alternator checked if it is still putting out the correct voltage that could be a problem also and not fully charging the battery.
Also he said:
That is not enough time to charge a battery at all.I know 10-15 minutes driving the car is not enough for battery to get fully charge by the alternator.
You need to take it out on the highway for a good run not drive around for 10 to 15 mins.
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