Everything works in Apple CarPlay except navigation apps

ios 12.3.1

iphone x

acura RDX 2019

• waze temporarily loses my location - doesn’t recognize I am moving or turning - arrow noting my car disappears.
• google maps shows I am heading in opposite direction

Feel free, but as I mentioned just last week I made several 2+ hour drives and never had my CarPlay maps wander off of where they should have been.

G1Ravage, what's an "SD navigation card"?

A lot of cars hold their navigation maps and info on an SD card, rather than a DVD, or a hard drive installation.

Interesting. Thanks. I don't think my Accord has that as I have to update by USB.

I’m having the same issue. GPS works great until it connects to apple carplay. I’ve tried restarting the car/phone, resetting all apps, deleting and reinstalling.

On a road trip. Wish I could undo the update.

I am facing the same issue with my iPhone 10 maps (Apple & Google) when connected to car play. The GPS seems to loose track and freezes and map keeps turning upside down or horizontal. It is almost impossible to use maps in car play. This was working fine until I updated my iOS to version 12.

This is a severe usability issue which requires immediate Apple attention.

Same Apple and Google maps application works fine when not connected with car play.

No, they really can't, or likely won't.

The phone will preferentially use GPS information from the car's head end, and the phone can't just determine whose GPS is more accurate.

I can see offering a choice of which GPS data to use being a support nightmare.

For wired CarPlay systems, GPS capability is optional.

For wireless CarPlay systems, GPS capability is required.

The issue seems to be in many vehicles the head unit is providing GPS data regardless of whether it actually has accurate position information to provide, and the problem is the protocol is designed assuming the head end will do the right thing.

Sounds like either an issue with the Alpines or the Alpine installers are not doing a good job of routing the unit's GPS antenna (since the unit itself doesn't have navigation, installers may think the GPS antenna an afterthought rather than realize that's how information gets fed to CarPlay.)

The installer followed the Alpine installation instructions to the letter.

I spoke to an Alpine customer service today.

He asked me

1) to reset the unit to factory settings

2) relocate the antenna outside the car (not in their installation instructions).

Will try this tomorrow. Wish me luck.

Then yes, moving the antenna outside the car is the next step (as stated in the last instruction.)

Some cars have enough bits of metal in the pillars or there is metal in the windshield glass, reducing GPS reception.

It also could be a bad antenna or antenna cable.

If not connected to CarPlay, is your location accurate on your phone while the phone is inside the car?

If not connected, yes. I got accurate location on my iPhone X.

I forgot to mention that this is an intermittent issue. I typically get accurate location on the start of my trip. After a while, 15 minutes or so, on a straight freeway, the arrow (car location) suddenly jumps outside of the freeway. About 100 yards or so.

I doubt this is an antenna reception issue. It seemed to me that this is a communication between the phone and the head unit.

There is lag betwen the two.

William Kucharski I think you are not quite right. My car has integrated antenna and the carplay is still not working on my newest iphone. Anyway I have iphone X and iphone 5s I bought an app called GPS diagnostic. The truth is iphone 5s has 90% signal most of the time does not matter the location of the phone, iphone X has 50% most of the time as signal improves if you move the phone to a better place. Iphone 5s is working great on my carplay Iphone X is not. Iphone 5S is running ios 10.2.1 iphone X is running latest ios 12.1.2. Definitely is a software problem or poor quality of hardware used in the new iphones. I think it has something to do with the power management in ios 12 as I tried few things to prove it. on iphone X - If you turn your phone in landscape mode it improves the GPS signal(i guess the software thinks you are not using that much power) also it works better on specific spots in the car. For me apple needs to sort out their software first as many many people complaining about it. Google the problem and you will see how many people are struggling

I did the reset of the head unit and relocated the antenna outside the car (above the windshield), problem is not resolved.

I'm still getting intermittency on the location accuracy. It seemed there is a time when the map or car location doesn't move i.e. "laggy" and when the app finally catches up it doesn't update the location.

That leads me to deduce it is iPhone X (IOS 12.1.2) and head unit (Alpine ILX-107) handshake issue.

jiskco what will happen if you disconnect the gps module at all? will the carplay use the iphone gps module only? so my iphone x gps nav is working great when not plugged in to the carplay but as soon as i plug it in and it is starting loosing signal... crazy.