Hi Guys, don't mean to hijack the thread, but was wondering about a Navigation phone power consumption issue when using Apple Carplay with an always-connected Iphone.
Because the Bolt does not come with navigation built-in, I wanted to enable navigation to always be available no matter who was driving. If someone with an older android phone or a flip phone drives the car, I wanted navigation to still work for them in the Bolt.
For this reason, I am testing out how to have a permanently connected iPhone in the car.
I have noticed that with Apple Carplay, if you connect the Apple phone in low-power mode it will fully support carplay so you can take/get calls, messages, and navigate, all just fine.
As it is standard, the car will not provide power through the USB when it is parked-off. So, if you put your Iphone in low-power mode, the phone can still stay on for several days, such as over a weekend, until you use the car again.
The one issue I have found is if you navigate to a destination through carplay, even if you turn off route guidance through carplay, the phone will stay in full-power mapping mode [background app?] and keep drawing a lot of energy. Because of this, if you then turn off the car, the permanent-iphone will be drained in just a few hours, even in low power mode.
I think this is a limitation or defect in the way the Apple carplay architecture works and carplay should be able to shut the app down or not continue to draw full-power when not navigating/routing; just like during a phone call, after the call, the phone is not drawing much power after the call.
Perhaps there is a setting in the iphone for reducing the navigation-app power draw when not providing route guidance, but I have not found it.