Apple CarPlay occasional connection issue

[Kremmen]

It could be anything, but given mine has been very rapid Sat/Sun I'm happy it's not hardware.

Whether it is headunit to phone connection, who knows.

In my case though it's not telematics getting in the way during boot.

[BROC]

I am inclined to agree with you that the issue is almost certainly software related.  I would imagine the head unit is running multiple software threads simultaneously and ocasionally one or more of these take a bit longer to respond or returns a state that the head unit isn't expecting, causing the head unit to pause and retry or even possibly restart.

I expect the head unit is busy communicating with the car CANBUS, GPS antenna, DAB & FM as well as any android/iOS  or native USB devices that might be connected.   I am not making excuses for Honda, but the engineers in Japan might be struggling to get exactly the same circumstances & timing as we are seeing in the UK when the problem presents itself.  I have seen relatively short delays at random with the Jazz head unit starting up myself.     

What is really needed is some sort of diagnostic log or journal of what is happening inside the unit at startup, I wonder if the capability exists?   

I know from previous experience working on IT systems with another Japanese car maker that they tend not to plan for failure in their engineering & assume if something is designed to work it will, so maybe there are no diagnostics available?

[sportse]

Yes, the dealer told me it had no codes recorded and all they could do was a software update.

I doubt there are boot logs stored on the device unfortunately.

[Kremmen]

I'm chicken to delve into the engineering menu

[sportse]

I’d just run through the ridiculous economy gauge reset procedure - why couldn’t they just have an option on the infotainment screen/dashboard?

Turn the car on, make sure eco mode is off

Turn it off

Turn it back on

Press the brake pedal twice

Press the eco button twice

Turn it off

And you only have 30 seconds to complete the last 4 steps.

[Kremmen]

I never look at those leaves things.

I just powerdown and get out.

[sportse]

It’s a pretty pointless gauge and something I never looked at myself either after the first few times.

Despite my mostly all motorway driving, the gauge filled up quite quickly and then just stayed full.

With it changing screens over the last few days going from full to empty and then full again maybe it’s got a bug/error in it.

I’ll see if it makes a difference to the long boot delay issue.

[sportse]

No difference with the eco meter reset, I'm still getting blank screens/rotating balls occasionally on startup and varying startup times.

There does seem to be a weird bug with the eco meter though, despite being reset and checked afterwards that it was reset and empty... it was showing full again today.

From new, it took several months to fill up the eco meter the first time.

[sportse]

...and I'm right back where I started with the 'can't connect to phone' error

Plug the phone in and you get a message saying ‘unable to connect’ - it doesn’t matter what you do next the phone will not connect:

- turning the car on and off makes no difference

- un plugging and plugging the phone back in has no change

- trying wireless CarPlay instead of wired also says no connection

- deleting/unpairing the phone and car makes no difference - you can start the pairing process, but then you get the message ‘can’t connect’ before you have full access

Yet when you try again after 20 minutes, it works as normal.

This is the issue I had originally, before the long start up delays became the bigger issue, now it’s back again.

There seems to be some serious software issues - maybe when I reset the eco gauge it affected things taking me back to the start of the problems?

[NoelM]

Just out of interest have you tried a different phone

[guest9814]

Strange, I have no such problem, I use only wireless CarPlay, yes sometimes boot take longer but not too long, try to exit CarPlay interface to Honda menu before powering car off.
Try to manually disconnect CarPlay connected phone in phone connection menu before powering off car, or disable Bluetooth in iPhone when you powering up the car.
I seen that when infotainment not see iPhone that paired in car it’s start quickly.
If you have connection error when uses wireless CarPlay  try to go in to Honda settings-> connection->Bluetooth and power it off, then in same menu power on Bluetooth, when I had that type glitch with android auto wireless  this trick helped  , if you connecting through USB and changing   usb cable not helps, t may be there lint  in usb port of iPhone .
Do you tried connect another iPhone ?

[Kremmen]

Is this a recent iPhone with the latest firmware ?

Maybe a few posts from other iPhone users with boot times ?

It must be so frustrating to continually have this error 

My Samsung Galaxy S10 on Android 12, varies from 5 to 35 secs to boot to Google Maps but so far it's never failed, but, I suppose Android to Android .......

[sportse]

Just out of interest have you tried a different phone

Yes, it’s been tried on different phones, using different cables.

There is someone on another forum having the same issue.

An elderly apple phone works for them, but a modern one has exactly the same issues I’m having.

[sportse]

Is this a recent iPhone with the latest firmware ?

Maybe a few posts from other iPhone users with boot times ?

It must be so frustrating to continually have this error 

My Samsung Galaxy S10 on Android 12, varies from 5 to 35 secs to boot to Google Maps but so far it's never failed, but, I suppose Android to Android .......

Yes, Running the latest OS.

I think it’s specifically an apple compatibility issue

Someone whose wife has an old iPhone has no issues but they do have exactly my issues with a newer phone. Both using the same headunit as they share the car.

[BROC]

Is this a recent iPhone with the latest firmware ?

Maybe a few posts from other iPhone users with boot times ?

It must be so frustrating to continually have this error 

My Samsung Galaxy S10 on Android 12, varies from 5 to 35 secs to boot to Google Maps but so far it's never failed, but, I suppose Android to Android .......

Yes, Running the latest OS.

I think it’s specifically an apple compatibility issue

Someone whose wife has an old iPhone has no issues but they do have exactly my issues with a newer phone. Both using the same headunit as they share the car.

Does your iPhone have a lot of storage vs those that work ok? Also do you have a lot of apps & music installed on it ?