Acura tl can't pair with iPhone 5s

Howdy Hong137,

It sounds like you are unable to pair your iPhone 5s with your cars bluetooth connection. I suggest these steps for you from the article named:

iOS: How to troubleshoot Bluetooth connections

http://support.apple.com/kb/TS4562

1. Check that you are in range of the Bluetooth device with which you are trying to pair your iPhone, iPad, or iPod touch. Most Bluetooth devices have a range of approximately 30 feet.
2. On your iOS device, tap Settings > Bluetooth and find your device in the list. If your device says Not Connected, tap the name of your device to attempt to connect it.
3. Tap Settings > Bluetooth and turn Bluetooth off and then on again.
4. Make sure that your Bluetooth accessory is turned on and fully charged or connected to power.
5. Restart your iOS device.
6. Tap Settings > Bluetooth and locate the Bluetooth accessory you are currently connected to or attempting to connect to. Then tap and Forget this Device. Try to pair your Bluetooth accessory again.

   Note: You may need to re-enter your Bluetooth accessory PIN if your accessory requires one. Some common PINs are 0000, 1111, and 1234.

7. Restart your Bluetooth accessory by turning it off and then on again1.
8. Update your device to the latest version of software. See how to update your iPhone, iPad, or iPod touch.
9. If your Bluetooth accessory has upgradeable firmware, check to see that you have the latest version1, 2.

If these steps do not resolve the issue, try out one of these steps, depending on the symptoms you are seeing from the same article:

Extended troubleshooting

If you're still having an issue after following the preliminary troubleshooting steps above, follow the steps below for the type of issue you're experiencing.

Bluetooth disconnects, intermittent connectivity, or unable to find

Unable to pair to a Bluetooth accessory

Unable to connect to a Bluetooth accessory

Thank you for using Apple Support Communities.

Take care,

Sterling

For any1 else who's stuck at "Iphone bluetooth not detecting HFL Bluetooth"

I had the same problem too. I paired Iphone 4 just fine but 5s could not pick up the Hands Free Link on my 2006 Acura TL. The key is to set the phone on discover mode in Settings>Bluetooth>On. When the phone start searching, initiate the setup process on the car, press talk, say "Setup". While the setup promps/options are being read, Say "Pair". You'll notice your phone will pickup the HFL and you can continue with rest of the process.

Wish that worked for my 5S but the last two updates made sure that my bluetooth was rendered useless.