Kenwood DMX1037S GPS with wireless Carplay

I have a

$1,000 Kenwood DMX1037S 10.1" High Definition Car Stereo Receiver with Capacitive Touch Panel

Kenwood DMX1037S and use Waze through wireless Carplay with an iPhone 11 Pro Max. The Kenwood has the latest software as does the iPhone.

I've had the DMX1037S installed since last Fall with few issues. Every now and then when using Waze/Maps/Google Mas with wireless Carplay the GPS was not accurate - typically it would have my truck positioned about 100 yards to the right of the road but still traveling in the correct direction at the correct speed. Sometimes this was temporary and it would correct itself during the drive and other times it wouldn't correct itself until I restarted the truck. I could go months without any problems.

In the last 2-weeks Waze, Google Maps, and Maps have become completely unusable due to the GPS being completely inaccurate. Some days it shows me 1/4 mile from my current location, traveling in the wrong direction, sometimes not moving at all, and on the wrong road. At one point I was driving to RI and the map was literally spinning in circles for 4 mins.

Has anyone experienced this issue? Has anyone figure out a fix? Any help is appreciated.

 

Did you install the supplied gps antenna that came with the headunit?

 

Yes, I did.

 

I think it’s a problem with Wayze? Or is it all map apps.

 

It happens with every app that uses GPS and is Apple Carplay compatible when using Carplay. I should say my iPhone and these apps have never ever experienced any issues with GPS while not connected to Carplay.

 

I've got the 1037s, no problem with Waze on wireless Android auto.

I'd pull the head unit and make sure that you connections are correct.
If you or a friend have an Android phone, try that so you can figure out if it's the phone or the head unit.

 

It worked with only the occasional issue for months and it still works fine sometimes. I believe Carplay will not work on the 1037S if the GPS antenna is not connected. I'm going to try using my wife's phone to see if that makes a difference.

 

Eliminate the easy ones first. Try an Android phone and report back.

 

I'm also using the factory gps antenna, not the one that came with the Kenwood.
Where did you mount the Kenwood GPS antenna?

 

I used the factory antenna. I only use wayze. The only problem I have once and a while maybe once a month. Is that Olathe wayze doesn’t update where I am. Like it’ll start directions from where I turned on the car. I just have to restart the app tho.

 

I’m having an issue with this as well. My location is accurate but the speedometer in Waze updates with severe latency. Driving 45 and stopping at a red light at a normal pace has me stopped with speedometer still reading in the 20s. It’ll update about once a second until finally reaching zero about four to six seconds after I came to a complete stop. I’ve installed the latest Kenwood update (1.7.003.1100). I’ve tried both the factory and supplied antennas with no difference in behavior.

If I disconnect the GPS antenna, it works fine. I’m guessing because it’s using the phone GPS. Wired Carplay works without it, but wireless does not. I have the issue using wired or wireless CarPlay. I hope it’s not the Kenwood GPS module.

Another annoying feature is this is inconsistency in automatically showing the front camera while parking. If that feature is keyed off the reported GPS speed, that would explain why it comes on intermittently and often too late.