Bluetooth will not automatically connect to car

This is for the 1900, but should be the same. Go to Bluetooth settings on your Galaxy.
Samsung HM 1900 User Manual

Aha, I found this for the 1500

4 Enter the Bluetooth PIN (0000, 4 zeros) to pair and connect the headset to your phone. Your headset supports the Simple Pairing feature which allows the headset to be paired with a phone without requesting a PIN. This feature is available for phones that are compliant with Bluetooth version 2. The headset also can be paired via the Active pairing feature, see page 14. Connecting with two Bluetooth phones
With the Multi-point feature activated, your headset can be connected with two Bluetooth phones at the same time. 1 After connecting with the first Bluetooth phone, press and hold the Talk button until the blue indicator light stays lit. 2 Press and hold the Volume up button to activate the Multi-point feature. 3 Activate the Bluetooth feature on the second Bluetooth phone and search for the headset (see your phone???s user manual). 12

4 Select the headset (HM1500) from the list of devices found by the second Bluetooth phone. 5 Enter the Bluetooth PIN (0000, 4 zeros) to connect the headset to the phone. ??¢??¢ You can set the headset automatically to reconnect to the recently connected phones each time you turn it on. -- To reconnect to the two most recently connected phones, activate the Multi-point feature. Press and hold the Volume up button in Pairing mode until the blue indicator light flashes twice. -- To reconnect to only the most recently connected phone, deactivate the Multi-point feature. Press and hold the Volume down button in Pairing mode until the red indicator light flashes twice. ??¢??¢ When the headset connects to two Bluetooth phones, some phones may not connect to the headset as the second Bluetooth phone. English

Disconnecting the headset
To disconnect the headset from your phone, ??¢??¢ Turn off the headset. 13

Reconnecting the headset
When the headset is paired with a phone, it will attempt to automatically reconnect each time you turn it on. If the headset does not automatically attempt to reconnect, ??¢??¢ Press the Talk button. Pairing via the Active pairing feature
With the Active pairing feature, your headset can automatically search for a Bluetooth phone and try to make a connection with it. 14

3 Press and hold the Talk button until the violet indicator light turns on. The headset will switch to Active Pairing mode, search a Bluetooth phone within range, and attempt to pair with it. [. . . ] ??¢??¢ To switch between the current call and the held call, press and hold the Talk button. 19

http://lastmanuals.com/manual/SAMSUNG/AURICULAR-MONO-BLUETOOTH-HM1500

1. Charge the headset:Headset is charged via USB cable, the light will be red when charging. When the battery is fully charged (about 2-3 hours), the red light of the headset will turn off automatically or the red light turns blue.
2. Turn on the headset:Press the on / talk button on the headset for about 5 seconds until the blue and red flashes alternately (or blue flashes or the blue lights all the time ), now the headset is ready to be connected to the iPhone.
3. Go to Settings, and tap Bluetooth. Turn on Bluetooth.
iPhone will automatically start searching for Bluetooth devices. Tap the device in the Devices list, then follow the onscreen instructions to connect to it. After matching successfully, the blue light on the headset will flash twice per time.
4. Call: when you finish all the above steps, you are going to talk via the Bluetooth headset. When there is incoming call, press the on / talk button, you can talk with Bluetooth headset, when you want to end the call, press the on / talk button, you can end the call.
5. Turn off the headset: Press the on / talk button for 5 seconds until the red light of the headset flashes quickly for twice, then release the button, the headset will be turned off.

Bell;
Important:

• For you to listen to music with your headset or car kit, the headset or car kit must support the A2DP Bluetooth profile.
• Before you connect your headset, you need to make it discoverable so HTC Wildfire S can find it. You can find out how to do this by referring to your headset manual.

1. From the Home screen, press , and then tap Settings > Wireless & networks.
2. Tap Bluetooth settings.
3. If the Bluetooth check box is not selected, select it to turn Bluetooth on.
4. Make sure that the headset is discoverable.
5. Tap Scan for devices. HTC Wildfire S will start to scan for Bluetooth devices within range.
6. When you see the name of your headset displayed in the Bluetooth devices section, tap the name. HTC Wildfire S then automatically tries to pair with the headset.
7. If automatic pairing fails, enter the passcode supplied with your headset.

The pairing and connection status is displayed below the hands-free headset or car kit name in the Bluetooth devices section. When the Bluetooth headset or car kit is connected to HTC Wildfire S, the Bluetooth connected icon is displayed in the status bar. Depending on the type of headset or car kit you have connected, you can then start using the headset or car kit to listen to music and/or make and receive phone calls.

Connecting a Bluetooth headset or car kit You can listen to music over a Bluetooth stereo headset, or have hands-free conversations using a compatible Bluetooth headset or car kit. It's the same procedure to set up stereo audio and hands-free.

• For you to listen to music with your headset or car kit, the headset or car kit must support the A2DP Bluetooth profile.
• Before you connect your headset, you need to make it discoverable so your phone can find it. You can find out how to do this by referring to your headset manual.

1. From the Home screen, press MENU, and then tap Settings > Wireless & networks.
2. Tap Bluetooth settings.
3. If the Bluetooth check box is not selected, select it to turn Bluetooth on.
4. Make sure that the headset is discoverable.
5. Tap Scan for devices. Your phone will start to scan for Bluetooth devices within range.
6. When you see the name of your headset displayed in the Bluetooth devices section, tap the name. Your phone then automatically tries to pair with the headset.
7. If automatic pairing fails, enter the passcode supplied with your headset.

The pairing and connection status is displayed below the hands-free headset or car kit name in the Bluetooth devices section. When the Bluetooth headset or car kit is connected to your phone, the Bluetooth connected icon is displayed in the status bar. Depending on the type of headset or car kit you have connected, you can then start using the headset or car kit to listen to music and/or make and receive phone calls.

Connecting a Bluetooth headset or car kit You can listen to music over a Bluetooth stereo headset, or have hands-free conversations using a compatible Bluetooth headset or car kit. It's the same procedure to set up stereo audio and hands-free.

• For you to listen to music with your headset or car kit, the headset or car kit must support the A2DP Bluetooth profile.
• Before you connect your headset, you need to make it discoverable so your phone can find it. You can find out how to do this by referring to your headset manual.

1. From the Home screen, press MENU, and then tap Settings > Wireless & networks.
2. Tap Bluetooth settings.
3. If the Bluetooth check box is not selected, select it to turn Bluetooth on.
4. Make sure that the headset is discoverable.
5. Tap Scan for devices. Your phone will start to scan for Bluetooth devices within range.
6. When you see the name of your headset displayed in the Bluetooth devices section, tap the name. Your phone then automatically tries to pair with the headset.
7. If automatic pairing fails, enter the passcode supplied with your headset.

The pairing and connection status is displayed below the hands-free headset or car kit name in the Bluetooth devices section. When the Bluetooth headset or car kit is connected to your phone, the Bluetooth connected icon is displayed in the status bar. Depending on the type of headset or car kit you have connected, you can then start using the headset or car kit to listen to music and/or make and receive phone calls.

Your headset can be used as stereo headphones or a wireless microphone for a bluetooth enabled device like a cell phone or a computer. When you plug the headphones into a device with the 3.5mm jack the headset automatically turns into stereo headphones and disables the microphone(headphone mode). It sounds like whatever device your headset is connected to via bluetooth is using the wireless microphone protocol where sound only comes through the one speaker and the microphone is on(microphone mode). The bluetooth protocol settings of your device may have been changed accidentally. You will need to go into the bluettoth settings of your device you are using with your headset and change the protocol. If it is a cell phone you will need to go into the bluetooth settings in the settings menu. If it is a computer your can adjust the bluetooth settings in the control panel.

You can download the pdf file of your instruction manual for your headset here

I hope this was helpful and let me know if you have any other questions. Thanks for using FixYa

1.Press and hold the Multifunction button in the middle of a boom headset while the headset is closed. The light will glow blue.
2.Open the boom microphone and the blue light should remain on. If not, repeat step 1.
3.On the cell phone, press Menu > Settings > Connection > Bluetooth > Handsfree > New Device
4.Select (Serched bluetooth device) once a connection is detected.
5.The passkey "0000" is now entered to confirm the connection has been made.
6.The cell phone screen will now read "Bluetooth Connection".

Tips:
1.Provided you set the Bluetooth power to "On" after the initial connection has been made, the phone will automatically re-connect to the headset.
2.To set the Bluetooth power on - Press Menu, Select Settings, then Connections, then Bluetooth link, scroll to Setup and select that. Scroll to Power and chose Change. Scroll to On and press Select. The screen should now read "Changed: Power On".
3.Test Your Connection: Close the headset and watch for cell phone to say "Disconnected". Re-open the headset and the phone should be connected automatically and will now display "Bluetooth Connected".

please give good rating if the solution works.
Thanks for using FixYa.

1.Press and hold the Multifunction button in the middle of a boom headset while the headset is closed. The light will glow blue.2.Open the boom microphone and the blue light should remain on. If not, repeat step 1.3.On the cell phone, press Menu > Settings > Connection > Bluetooth > Handsfree > New Device
4.Select (serched bluetooth serched device) once a connection is detected.
5.The passkey "0000" is now entered to confirm the connection has been made.
6.The cell phone screen will now read "Bluetooth Connection".

Tips:
1.Provided you set the Bluetooth power to "On" after the initial connection has been made, the phone will automatically re-connect to the headset.
2.To set the Bluetooth power on - Press Menu, Select Settings, then Connections, then Bluetooth link, scroll to Setup and select that. Scroll to Power and chose Change. Scroll to On and press Select. The screen should now read "Changed: Power On".
3.Test Your Connection: Close the headset and watch for cell phone to say "Disconnected". Re-open the headset and the phone should be connected automatically and will now display "Bluetooth Connected".

please give good rating if the solution works.
Thanks for using FixYa.

1.Press and hold the Multifunction button in the middle of a boom headset while the headset is closed. The light will glow blue.
2.Open the boom microphone and the blue light should remain on. If not, repeat step 1.
3.On the cell phone, press Menu > Settings > Connection > Bluetooth > Handsfree > New Device
4.Select HBM-730 once a connection is detected.
5.The passkey "0000" is now entered to confirm the connection has been made.
6.The cell phone screen will now read "Bluetooth Connection".

Tips:
1.Provided you set the Bluetooth power to "On" after the initial connection has been made, the phone will automatically re-connect to the headset.
2.To set the Bluetooth power on - Press Menu, Select Settings, then Connections, then Bluetooth link, scroll to Setup and select that. Scroll to Power and chose Change. Scroll to On and press Select. The screen should now read "Changed: Power On".
3.Test Your Connection: Close the headset and watch for cell phone to say "Disconnected". Re-open the headset and the phone should be connected automatically and will now display "Bluetooth Connected".

please give good rating if the solution works.
Thanks for using FixYa.