It simply can’t be the phone/cable used... same phone used in a Mazda Mx-5 with an aftermarket Sony CarPlay headunit worked flawlessly for a 10 day 10000km 10hr/day road trip. Plug the phone and cable into the rdx and I am lucky if I get 20minutes before the rdx and CarPlay start fighting.

What always seems to precipitate it is to play music and then have Waze or google maps try to alert you to something, boom no CarPlay, and in some cases it doesn’t even recognize the phone is connected to the USB port. For a while turning Bluetooth off worked well (if you remembered to do that before you started the rdx. 3 finger reboots do nothing, force rebooting the phone does nothing. Got a speeding ticket because CarPlay and the rdx were fighting and stopped talking 10 minutes before a speed camera that waze would have warned me about.

just very frustrated with the rdx infotainment system.

Sorry this is happening to you. The speeding ticket is your fault, not the RDX or CarPlay or Waze.

I was having connection issues with Android Auto, and now have a new cable I am testing. We'll see. It MAY be a worn out USB-C port on my Samsung S8...I hate to say it, but it may be time for me to get a new phone? Still testing.

Nothing wrong with using quality cable to rule out certain causes.

Yes, except with this Covid stuff, I'm not driving as much, and its too hot (110 F today) to sit in the car and test, even in the garage. This has been the hottest Summer in Southern Arizona history. So I hope to drive on Wednesday, to test out my new Monoprice cable.

You are a hardy soul.

I wonder where you are relative to the design/testing limits for many of the vehicle systems. You're probably getting close.

yep speeding ticket is 100% my fault. It just adds to the frustration of the infotainment and the phone not playing well together knowing that I would have gotten a warning of the impending camera, is all I was meaning.

HEH! It was 127 F in the sun late afternoon yesterday when the sun was on my outside thermometer sensor. This is why I say, if the A/C works here then anyone complaining either isn't using it the best way, or needs to take it into the dealer.

Yep, and I DO understand the frustration. You had a system that should have warned you, but didn't.

I assume the iOS on your phone is up-to-date?
Did you try the other USB ports on the RDX ?
How about the Acura App? Might not hurt to delete it, reboot phone, and then re-install it (and re-setup your login).

Some good tips here. Read carefully (maybe print). Try to be methodical in your troubleshooting:
https://support.apple.com/en-us/HT210892
and
https://macreports.com/apple-carplay...ng-how-to-fix/

Phones, by themselves, and apps on them don't always work right. Apps that are supposed to integrate with other apps are even less reliable. Trying to get everything to work in a car infotainment system, when they're made by two or three different companies is too much to expect, IMO. Sure, it would be nice.

Have you seen the new SpaceEx capsule? Pretty much all glass cockpit. If they had that on Apollo 13, they'd be outside the Ort cloud by now.

Apple called me back last night and they said its a known issue with a few phones where the iPhone will not connect to the rdx. Unfortunately there is no work around right now. So for the time being I have no apple car play

But your wife has the same phone and it connects? Is your phone brand new? Will Apple replace your phone, as it seems to be defective? Is there a factory reset on Apple phones? Is there an app you run on your phone that your wife doesn't have that might be causing a conflict? Grasping at things that might help, as I am an Android user. Something isn't right here.

That just means they don't know. They can't/won't blame Acura for (at least) 2 reasons:
1. It works for others
2. Acura allowed them to place Apple Car-Play into the vehicle

It also has the effect of getting you to stop worrying about it (it's hopeless and you move on).
I would at least try everything on the pages I posted.

I actually reset my iPhone and it still doesn't work

For shits and giggles, you can try swapping phones with your wife. Back up both phones, then restore hers using your backup, and restore yours with her backup. If your phone restored with her backup still doesn't work, then you've isolated the problem to the hardware. And if her phone with your backup now doesn't work, then you've isolated the problem to the software.

I got iPhone Max XS, seems to be OK with 13.6.1 iOS. Are they saying its something with newer iPhones?

So we are clear ...
I'm trying to help you because it looks like your main use of this forum is for help with the Acura App and CarPlay.

So, when you say you "reset my iPhone" ... are you saying that you:
- completely erased your iPhone-11 (like before you sell it)
- Restored your iPhone-11 (from the iCloud backup your recently made)
- then tried to make it work in usual fashion

Yes I did a factory reset and restored my phone from icloud backup

So, you didn't do any wrong, per-say.

However, notice how the iPhone-11 ended up with all the same software/apps and settings as before? Well, while this is great if you get a new phone ... it doesn't really accomplish much to troubleshoot your problem. Whatever software or setting that was originally preventing CarPlay from working ... is back on the phone again.

And personally (as I understand the problem) ... I'm still not 100% convinced the problem is your iPhone-11. You won't really know what the problem was until you get it working.

I've been fighting these CarPlay issues for almost 2 years. At one point the connectivity with CarPlay was really good, but when the next software upgrade was loaded issues resumed.
My RDX is currently at the shop, ever since the last Acura update I've been unable to change the channels with the thumbwheel counter clockwise, clockwise has been good. We'll see if the dealer is able to fix this first issue.
As far as CarPlay, it's super frustrating how inconsistent it has been. I've had many cheap Nissan and Hyundai rental cars where CarPlay runs without issues for the 3-4 days that I have the car.
At times, I feel like giving up on CarPlay, but I much prefer Waze for Nav and the notifications over the factory nav. But the constant disconnects are super annoying.
I've never done a full system reset, restore all factory settings and will give that a try if the issues continue.
Lately, I've been wondering if those that use Android phones over iPhones are having the same issues...

I have had Android Auto issues that were DEFINITELY related to cable usage. I have proven to myself that is the case 100%. I doubted it.. I am a believer! My connection issues have been resolved with the use of a high quality UBS-A to USB-C cable. I know iPhones use a different cable. Have you tried a brand new cable? While it doesn't SOUND like your issue is cable related, I didn't think mine was either.

speaking only for myself, I tried a new cable and it didn’t help. Resetting the entire system was a big pain, but it did help.

Yes, have tried multiple OEM cables and 1 aftermarket. Def not cable related.

I did a full system reset back in February and have not had any real problems yet, except for yesterday when I was in a hurry and didn’t wait for the full boot sequence before I drove off.

I got that rotating starburst for almost 10 minutes until it finally rebooted and came on.

Rebooted the system and doing that corrected the issue with the tuner that the dealer could not fix. I suppose I'll have to drive it more to see how CarPlay and the tuner issue respond after the Factory reset.

UPDATE: this worked for less than three months. The same exact thing (system dropping CarPlay, then reconnecting) just started again a few days ago, and I am factory resetting again. In case Acura is lurking: this is not acceptable and it would stop me from leasing another Acura. I have no problems with how the infotainment system works, when it is working. But having to reset every setting in this entire complicated car multiple times time, just to make CarPlay work is not acceptable. Nor is it acceptable to lose my GPS or whatever else I’m listening to every 10 minutes while I’m in the car.

I have not had any issues after latest
software and TSB with car play

Was in the car all day today, mostly on CarPlay.

No issues at all.

Ah yes; you do have to pull the fuse to fully reset the system. I did that and have no issues on D1.2.2

yeah, RDX infoteinment got really bad initial reviews with earlier version of software, it was total crap. Now its reasonable, not perfect, but good enough for most people.
The TSB is the one about blue screen with communication lost, I was getting it once a week, but after TSB done at the dealer it seems to be resolved. Infotainment system meets my needs.

I have had few problems with this system. BUT, I don't use an Apple anything and I rarely use Android Auto. I can not complain about this system at all. Besides, for me at least, the ability to interface with my phone beyond dong a real phone call and maybe seeing a map on the screen is all I need and those work just great. My choice of vehicles to put my money on isn't dictated by a "Infotainment system" There is far more to a car than how well it works with your phone, well at least for most people. But, YMMV as they say.

Random glitches have mostly gone away. Carplay is a big deal to me. The sound quality is noticeably better than Bluetooth. Gotta make use of the awesome sound system we have.

Ditto on that assessment. Only thing I notice is that for a minute or so right after your fire it all up the volume control does not work and whatever's playing skips. Goes away once the underpowered processor in the Infotainment system catches up.

Spent about 4 hours yesterday on Carplay. No issues.