Everything works in Apple CarPlay except navigation apps

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.

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.

I will try both experiments over the weekend.

Here's one more data point to this issue...

I rode with my carpool buddy this morning. Wired carplay on Ford Sync3. The same issue.

Waze reported inaccurate car location on few occassions, not all the time. Again, the head unit (Waze) screen navigation frooze/lagged when they happened.

I noticed this issue with Waze this weekend as well in a rental car. The app kept on redirecting me onto adjacent roads that I was not on. Not sure where it was trying to take me by the time I got to the airport. I thought it was an issue with the latest update. Good thing I was familiar with the route to Calgary airport. I didn't have time to test Google or Apple Maps to see if they worked. Unfortunately I do not have a CarPlay capable head unit in my car to further test.

Same issue here.

Never had had an issue using my iPhone X for navigation prior to connecting it to CarPlay for my first time today. While connecte, Google, Waze, and Apple maps and all kept losing my location. It would usually veer my car off the highway and just freeze there. This lasted 10 minutes or so. It also happened once on local roads.

In-car navigation system had me in the correct location.

It seems weird that it’s the car providing faulty info, because when it happens to me I can flip to the car GPS and it knows exactly where I am. Seems odd that it knows where I am but is telling the phone something else.

CarPlay is new to me but lots of reports online of this being an issue introduced in iOS 12.

Update on disconnecting the head unit GPS antenna:

Wired & Wireless Carplay we’re both giving wrong location. This time, it’s even worse as the location is way off my location. I drove for 10 miles and it seemed that the map is not loading correctly as the head unit was relaying random coordinates, in my opinion.

I hope in future IOS CarPlay update, this issue will be rectified. An option to select which GPS antenna to use (iPhone or head unit) will probably do the trick.

What issue would be more serious than a gps that does not work?

I have the same problem, my car doesn’t have a gps and Maps, Google Maps and Waze doesn’t work when I connect the the phone to the car. I have an iPhone7 with iOS 12. 

If there are many users with the same problem, you should do a fix and I think the best way to fix that is that I can decide what gps use and if that generates more issues you should fix that issues too. 

These phone are not cheap so make it work. 

No luck with 12.1.3. Same behavior as before. Alpine is shipping a new antenna and am going to try that along with different locations. If that doesn't work, I guess I'll have to replace the iLX-107 head unit entirely.

[iPhone X w/ Alpine ILX-107]

I spoke too soon. Tonight I drove home with intermittent problem as before. I guess IOS 12.1.3 didn't fix the issue at all.

I'll wait for @joelfromberkeley's update on the antenna replacement.

@joelfromberkely, I tried calling Alpine support today to elevate my case but can't reach them. Apparently, their hotline isn't working. How did you reach them? Thanks.

Jim, this describes my experience with the iLX-107 exactly. I’m going to try all the antenna placements again once I receive the replacement antenna from Alpine (still haven’t received it, called again and they said they would send another), but I suspect the real problem is in the head unit.

At this point I wonder if it is a defective unit or if the iLX-107’s Navigation is simply flawed. It’s too bad because, as you mentioned, everything else about it is excellent. I just can’t imagine they’d intentionally ship a product this bad. It’s not like the navigation just occasionally has issues. It is wrong 50% of the time rendering it unusable.

FWIW, other manufacturers just announced a bunch of new wireless CarPlay units at CES. The JVC options look good, although I don’t know about the resistive vs. capacitive display.

You’re welcome @joelfromberkeley.

I have the same freezing issue as you have.

This is an Alpine ILX-107 issue. Nothing to do with the phone.

Does anybody know a better way of airing this issue to Alpine? I have made numerous calls to their Tech Support. They are not the most helpful tech support I’ve dealt with.

Does anyone know if you can file an online request or bug report?

Oh, my... Can I join the support group too? It feels marginally better to know I'm not alone.

I just installed an ILX-107 in my car. Budgeted for months, dropped almost $1k.

For several weeks I tried everything. I'm getting so good at this, I can take the Alpine unit out of my Subaru faster than Forrest Gump can assemble a rifle. I bought a different, high quality antenna and an SMA to GT5-1S (square gray proprietary) adapter. Same thing. I tried the dash following Alpine's instructions exactly. I opened up the sunroof and put the antenna up on the roof. Same thing.

Now mind you, I am no novice. I soldered my own harness, all two dozen wires and everything works perfectly except the danged GPS. As a software and hardware guy I cannot understand how disconnecting the OBD2 / CAN will help, but if you guys say it's helping it's worth a try.

Alpine, I am VERY frustrated! Your product is broken. This is unacceptable.

DO NOT buy the ILX-107 unless you don't use navigation. It's excellent for everything else, but the navigation is downright unusable due to GPS inaccuracy...

Did Alpine's swapped unit make the problem go away? (Is it their firmware?)

What's the best channel to go through to get them to replace the unit?

Thanks,

Jim

Hi Guys,

I too have same problem and trying to diagnose over months but no success yet. I was hopping apple map (recently launched in India) would be better but not luck. Google, waze and apple maps have same issue. But phone alone works well, never mis-place navigation arrow.

Anyway how to confirm CarPlay uses headunit GPS coordinates/signal not from phone ? I bought head unit from third party RCD 340 and it doesn't have GPS antenna. I tried to re-calibrate compass as well not important. I'm going to check magnetic filed inside Car tomorrow, that may be causing interference. Thanks -P

Quick update: The one flawless drive I had was a fluke. Having lived with it for a week, I've yet to have another successful drive. Granted it is better with OBD turned off, but I'll still go through a few periods during the drive where the GPS either freezes or becomes inaccurate. With the OBD turned off, it will eventually recover, but it is long enough that I'll end up taking a wrong turn. A few additional updates:

-- I've now tried placing the antenna on the roof (with cord bundle on top of dash) and with the antenna & cord bundle on the dash. There is no difference. So I guess that's a good thing, it isn't the antenna placement and if I get a system that works hopefully a more discrete antenna location will be effective.

-- I called Alpine support one last time. This time the guy on the phone was rather rude. He swore OBD wouldn't have an impact on GPS. Who knows. My experience has been that the GPS location doesn't recover with OBD turned on and I can reproduce it 100% of the time. A Crutchfield support rep told me to try cutting the "speed wire" to see if that helps. As far as I can tell, there is no "speed wire" with this unit, but it wouldn't shock me if it used speed data from OBD to aid GPS in some way. I guess to be fair to Alpine, I think their support is intended for dealers, not consumers, so perhaps that's why they are being rude.

At this point I'm pretty frustrated generally and have lost faith in Alpine. My plan now is to return this unit to Crutchfield. I'm either going to have them send me a different iLX-107 to try with the same harness (just in case) or I'm going to buy a different brand and a new harness.