Google Maps and Car Play

mpshizzle

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I suspect that it does not get GPS data from the car... On Android with Google maps, it never knows what direction I'm facing until I start driving, so that tells me at the very least it's not getting compass data from the car
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macchiaz-o

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Google Maps via Android Auto works just fine with heads unit that have no GPS receivers. On the other hand, if location service is turned off on the phone Google Maps won't work in Android Auto - I found that out by accident the other day.
Sure, this all makes sense. On vehicles equipped with the sensors and compliant with AA's sensor APIs, I'd have guessed the phone would prefer the accuracy of vehicle's sensor reading more than the phone's, but maybe this isn't the case.

I suspect that it does not get GPS data from the car... On Android with Google maps, it never knows what direction I'm facing until I start driving, so that tells me at the very least it's not getting compass data from the car
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I suspect that it does not get GPS data from the car... On Android with Google maps, it never knows what direction I'm facing until I start driving, so that tells me at the very least it's not getting compass data from the car
Yes, there is that, and it doesn't do dead reckoning either when GPS reception is spotty - some data regarding the vehicle's movement is sent back to the phone, I don't know how extensive it is or if the phone actually makes use of it.
 

mpshizzle

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Yes, there is that, and it doesn't do dead reckoning either when GPS reception is spotty - some data regarding the vehicle's movement is sent back to the phone, I don't know how extensive it is or if the phone actually makes use of it.
Honestly, from my perspective it behaves exactly the same way as when I’m using navigation standalone on my phone… It doesn’t ever rely on the phones compass because you can move your phone around in the car as you’re moving, so it relies on your movements to determine the direction you’re moving
 

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Im in the same boat. My current experiment:
Identical iPhones, one attached to CarPlay, the other is not. Both using Apple Maps with the same destination programmed.
The CarPlay attached phone is literally all over the map! Navigation continuously gives me wrong turn instructions and seems disoriented as mentioned by the OP. The non attached phone navigates correctly with accurate location.
Im lost....

Not sure of Sync versions yet. Just got the ride last week!! Wooo!
 


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Sure, this all makes sense. On vehicles equipped with the sensors and compliant with AA's sensor APIs, I'd have guessed the phone would prefer the accuracy of vehicle's sensor reading more than the phone's, but maybe this isn't the case.



Interesting!
Not to hijack this CarPlay thread, but former AA first PM here --- in Android Auto, the car's GPS (when available) is integrated into something called "fused location provider". This API in the Android framework combines sensors available to provide one API to Android apps that have fine location permission to get position and compass heading.

I suspect that in the case of your AA-related location complaints -- as well as those in CarPlay -- there is a bug in the GPS location reported by our cars, and that this unreliable location is an edge case not accounted for in both AA and CarPlay and the navigation apps that run under these systems.

I bet that sometimes, mapping apps, or AA / CarPlay, will throw out errant sensor data, and/or that Ford's craptasic bug is so intermittent that it will sometimes correct itself. Navigation apps also have "snapping" algos that know that cars don't drive thru buildings and so they attempt to always snap you to the nearest / most likely road.

So TLDR: I suspect these are a result of a GPS reporting error to the projected phone systems by the car -- or potentially this could even be related to the charging errors caused by the car losing its position and therefore not following the charging parameters the owner set for that location (cause the car thinks its somewhere else!)
 

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Navigation apps also have "snapping" algos that know that cars don't drive thru buildings and so they attempt to always snap you to the nearest / most likely road.
So what you're saying is... Ford navigation intelligently fuses cars and coffee mode with Android Auto.

Ford Mustang Mach-E Google Maps and Car Play tylormiller-mustan
 

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So what you're saying is... Ford navigation intelligently fuses cars and coffee mode with Android Auto.

tylormiller-mustang.gif
That Mustang definitely did not snap to the road
 

Neil4Real

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Im in the same boat. My current experiment:
Identical iPhones, one attached to CarPlay, the other is not. Both using Apple Maps with the same destination programmed.
The CarPlay attached phone is literally all over the map! Navigation continuously gives me wrong turn instructions and seems disoriented as mentioned by the OP. The non attached phone navigates correctly with accurate location.
Im lost....

Not sure of Sync versions yet. Just got the ride last week!! Wooo!
What phones? My iPhone 14 Pro has had GPS issues day one, even with Maps. It constantly lags behind, thinks I’m half a mile over, going the opposite direction when I’ve been driving one way for 3 minutes. It’s definitely an Apple thing that’s been reported by others. I have a launch phone, I hope it’s not hardware as 16.2 and now 16.3 beta still have the issue.
 

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What phones? My iPhone 14 Pro has had GPS issues day one, even with Maps. It constantly lags behind, thinks I’m half a mile over, going the opposite direction when I’ve been driving one way for 3 minutes. It’s definitely an Apple thing that’s been reported by others. I have a launch phone, I hope it’s not hardware as 16.2 and now 16.3 beta still have the issue.
Both of our phones are 14 Pros running 16.2. Just received these phones from T-Mobile. Here’s something interesting; my previous iPhone 12 had the same issue in this car. Problem seems to follow iOS, maybe not hardware???
 

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Both of our phones are 14 Pros running 16.2. Just received these phones from T-Mobile. Here’s something interesting; my previous iPhone 12 had the same issue in this car. Problem seems to follow iOS, maybe not hardware???
The GPS issues with phones has been an on going problem between Sync platform and phones for years. As stated earlier, the location and speed information are received from the vehicle. On sync 3 for years it would report speed variation. Also errant location information, even if the car didn’t have its own map. On the Mach E, I am able to at least switch to in car maps when the phone starts to flake out. @Ford Motor Company , this gps bug persists in sync 4a. I have also seen the issue on 2020 Escapes.
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