So here's the story: recently I purchased a OBD II Bluetooth scanner, brand name Carista. The scanner has very positive reviews and is backed by several apps, etc. so no worries about its quality. Since using it I have noticed that when starting the car, after sitting for just 2 hours, the car will go into ACC mode and then hesitate, then startup normaly but with all trip info reset and date and time reset as if the car lost power. I checked the battery voltage immediately at startup and it was a full 13 V. No trouble codes, etc. This has only started since using the OBD II scanner. Any ideas?