Siri not working with CarPlay after iOS 18 Update

Interesting to know that you were not using the steering wheel controls for handsfree operations in your vehicle. Never occurred to me that users with steering wheel controls weren’t using them. Seems like if you were using Hey Siri before while in the car you may have been technically it using CarPlay for those functions and were instead using Bluetooth with the phone treating the car speakers like a bluetooth headset (which technically is what people that don’t have CarPlay in their vehicles but can pair their phone via Bluetooth would do). Nothing wrong with that of course but just surprised

This doesn’t resolve the issue. I have a 2019 Subaru Forester sport with the infotainment center up-to-date. If you remove it and re-add it, it works. For me though, 7 hours later when I left work it wasn’t working again. For me, this was not an issue until the iOS 18.1 update. We need this resolved ASAP. It’s dangerous with how Siri is not audibly responding. For those of us who do use it responsibly and not in a distracted manner…this absolutely now causes distractions. If this is an iOS CarPlay issue, please fix it. If it’s Subaru, please let them know and partner with them on an update.

I can confirm holding down the speak button on the steering wheel has Siri working properly. This is the only work-around I’ve found that works until a fix is issued.

I had this same issue with my 16 Pro Max using a wireless CarPlay adapter with my 22 Hyundai Palisade. I did a power reset on my phone and it fixed the issue.

It's not just Subaru. I'm seeing the same problem with my 2025 Acura MDX.

After many frustrating days, trying all the tips (turn phone off and on; turn car system off and on; forget the car on the phone and reconnect; etc) without success, I found one thing to try that I had never heard before: turn off any vpn. That worked.

Try this. Instead of saying, hey Siri text my daughter, which we know doesn’t work currently, I simply depress the microphone button on the steering wheel, and then I just say text my daughter. At that point all the prompts worked like normal and I could continue doing hands-free texting while driving.

That steering wheel microphone button is also good for any phone commands. I never really used it before until now and I’m finding it quite handy. Try it out!

I also have this issue. I’m sure Apple has secretly disabled the feature to save our batteries for our own good. But for $120 you too can buy a new battery so Apple will re-enable the functionality. Or, please remember to purchase a new iPhone every 18 months so you don’t have these type of issues.

Once the head unit comes up, press the home button in the upper left corner for 10 seconds or until the reboot button appears. Reboot the head unit, when it is loaded voice activated siri will work until you turn your car off. I need to do this every time I start the car.

I am having the same issue with Siri in Car Play as everyone else. I spent 2 hours on the phone with Apple trying to resolve the problem with no solution available. I, too, did a reset on my phone and the issue is still not fixed. I removed the car from Car Play and added it back. Still no luck. It doesn't work with the steering wheel microphone button either. It's frustrating and inconvenient. Hoping Apple will find a solution to this issue pronto!

FIXED (for me at least)

While in your car and preferably not near other WiFi sources, Go to Settings-> WiFi. You should see a network name something like "Car-DEC6" or something similar. Apple Carplay is using both bluetooth and wifi network to work. For me, I was able to play music, see maps, etc.. but no Siri voice commands were working. I turned off the following settings and everything has started to work again. Note: I also completely removed my car from CarPlay on the phone and the phone from the Car's system. Then re-added the phone to my car for CarPlay. This didn't fix the issue but I did do this first before disabling the settings below which did fix this issue. It's worked for days now.

On the Wi-Fi network described above, click the blue i to access the details for that connection. Turn off the following settings:

• Private Wi-Fi Address
• Limit IP Address Tracking

Once I did this, Siri voice commands started working again.

I have an iPhone 13 Pro Max.

iOS 18.0.1 iPhone 14 - Same issue.

Siri does not respond to commands when the phone is connected with cable to my Suburu Impreza. It worked fine when I was running iOS 17.7.

Apple - please fix.

The only way it works is to use the command button on the steering wheel. So much for being able to just use your voice.

This is a nightmare as I relied on this feature for calling and texting using CarPlay.

exactly same issue, press button and Siri comes up but does not recognise sound

I have 18.1 and have the same issues.