Hopefully you can help in identifying the possible cause of the sound in the video below.
I have also just experienced a bit of knocking when I am driving up the three-story parking ramp to my apartment so there is that as well.
Acceleration has been a bit heavier as well, meaning that it takes a firmer press on the pedal to get the car up to speed.
I have noticed that the RPM idle at 1300~1500 RPM from a cold start; prior to battery issue, it was about 700~800 RPM from cold start.
Details of the car:
Year of Manufacture: 2015
Date Purchased: 1-Sep-15
Current Mileage (KM @ Miles): 30,900 @ 19,200
Driven mostly on highways since receiving it.
Video: https://youtu.be/Znnc7f9peGo
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Sunday, August 7th, 2016 AT 11:26 PM