Apple CarPlay GPS wrong location issue

Solution for Alpine ILX-107 Head Unit

Background: When using wireless carplay, the head unit in the vehicle is required to use the vehicle GPS for location data, as reported by many users in this thread.

In vehicles where wireless carplay is being used AND the head unit has a connection to the OBD data from the vehicle, so that the unit can show RPM, Gas Mileage, Error Indicators, etc, then the issue described by Leechristian3 can occur.

Solution(s): The issue can be solved by either 1) Turning off OBD functionality in the head unit OR 2) Setting OBD to only activate when the gauges are displayed OR 3) Not using wireless carplay, instead use carplay via USB

In the Alpine ILX-107, the OBD functionality is accessed through the iDataLink module, read up on it in the online manual http://support.alpine-usa.com/products/documents/OM_iLX-107_EN.pdf

Instructions for addressing in the Alpine ILX-107 Head Unit:

1. Press Home Button on Head Unit
2. Select Gauges
3. Select the Settings Button
4. Set OBD to either disabled, or on-demand. If it is set to Always On, it will create substantial issues with the ability of the head unit to send accurate GPS settings to Apple Car Play. Read up in the manual what you miss out on by changing this setting, very little for most drivers.

The other option is to plug the phone in to the head unit via USB. In many cases CarPlay will then use the phone's GPS data, and the issue described by by Leechristian3 will not occur.

Further research needed: It is possible that when the head unit is attempting to both provide GPS data wirelessly to the phone AND simultaneously read the OBD data for mileage, rpm's, fuel efficiency, etc, that the system is overloaded and thus sends delayed or inaccurate GPS data as a result. Above data has been provided to Alpine, however no information on rather a firmware fix is coming.

CarPlay has a requirement that it will use the car's GPS information if it is required.

Whether Location Services is enabled on the phone has nothing to do with it.

Once again:

• If you are using wired CarPlay, the GPS information may come from the car or the phone itself, depending on whether the head end tells the phone it will be providing location information.

• If you are using wireless CarPlay, the phone is required to use the GPS information provided by the car.

It's the CarPlay head end, not your phone.

today I tried Xr and it worked prefect. This makes me to think this is software issue for iPhone X unless Apple has modified hardware .

Have you seen this thread about a Jeep TSB?

https://jeepcherokeeclub.com/65-electronics-audio-lighting/238020-carplay-gps-starting-location-issue.html

Yes, find out what is needed for your head unit to provide proper GPS location data to your phone.

No, my car doesn't have GPS capability. I bought Head unit after market RCD 340 for VW Polo. I see issue is with iPhones itself, for some reason it happened more when Car play is connected. Iphone GPS not good any Samsung S9. I tried S9 GPS very stable and fast, it almost read 29 satellites. Accuracy +/-5m. Looks likes need to external bluetooth GPS device.

I have the same issue with my 2018 Jee Grand Cherokee. I do not think it’s an issue with iPhone as I have used both a 6s and X. When I plug into CarPlay it will relocate me to my friends address about 40 miles away, and it is always the same location.

Is there a way to reset CarPlay?

Just discovered this post so decided to chime in. I too have a 2019 Jeep, it's a Cherokee and the problem I have is it showing me at home when I'm using any carplay map app. I have all three Maps, Waze and Google. If I start from home and set a destination, it will correctly show my current location and directions. If at some point before arriving at the destination I turn the ignition off, the next time I start the car the navigation will put me back at home. If I disconnect the USB cable from the phone and look at the phone, the navigation location will be correct. When I plug the phone back to the cars USB the navigation will put me back to home again. If I start driving while this is happening the navigation arrow will move as if I am in my own neighborhood showing street names, etc. If I look at the phone at this point, it too thinks I am at home until I disconnect it from the cars USB and it will then show me the correct location I am and continues to do so until I plug it back to the cars USB.

IMO, this appears to be a Jeep problem, not carplay, since the phone is working until you plug it into the car.

No Static At All wrote:

Brand new Ford F150. iOS 12.3.1 on my phone. Same exact issue. Waze, Google Maps, and Apple Maps all display my location exactly the same place, roughly two miles from where I actually am. Wondering if any other firmware updates for the vehicles in question have helped folks with this issue. Unplugging my phone from USB in the truck make either map program instantly jump to the right location. Plugging USB in again makes location jump right back to the wrong place.

This is a known issue with Ford's infotainment systems. So far as I know, Ford has not released a fix yet.

It is not an issue with ALL manufacturers. It is also not an issue with CarPlay.

Changes were made to the global GPS system.

When you plug the phone into a CarPlay compatible system in a vehicle that has a GPS antenna, it gets the location data from the car. The auto manufacturers tend to be extremely slow in updating their systems. That is the issue. Those systems need to be updated by the manufacturers.

The Apple Store Employee was not entirely up to speed on the cause of the problem. That's not surprising.

You need to take this up with Ford.

For CarPlay wireless you need, WiFi connected and Bluetooth connected. Try resetting both of these. When resetting Bluetooth, delete your phone from the head unit and your head unit from the phone...and create a new connection. This is an apple issue since they fully control CarPlay software from both the phone and the head unit.

Each legitimate MFG (Alpine, Kenwood, Sony, JVC, Pioneer) must go thru a through certification from Apple on each model...EACH model. It takes weeks..sometimes months to get final approval. Apple controls the software on both the Head Unit and the Phone side of the equation. Once Bluetooth connection is interrupted for any reason...even only for a second. Both the Head unit and the phone are out of sync. Therefore the connections must be fully reset. Rest assured, Apple is in 100% control of the software for CarPlay

doa70. wrote:

Sounds like the firmware update to the car is expecting data more frequently from the phone now.

You misunderstand how CarPlay typically works; whenever possible the car provides GPS data to the phone which displays the maps on the car screen.

It sounds like when the newer software causes the car to lose its location, it's reporting nonsense to the phone.

I have been facing this issue with my Audi Q7 2018 ever since I bought it.

Also, reported on the forum

https://discussions.apple.com/thread/250340778

I had some success after restoring the location settings but after upgrading the iphone X to iOS13 I am facing the same problem and this time it's not getting resolved even after restoring the location settings.

Really frustrated, not sure if I goto Audi dealer again as many of you reported that it's not the car and looks like so.

-- Tavi