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View Full Version : Auto joining bluetooth handsfree


BCX7
11th December 2007, 06:13 PM
hey all

I cant seem to find a lot of info about this topic, so hoping you guys can help me out somehow.

is there any way of getting WM to join to handsfree bluetooth profile when i'm in my car (using pioneer headunit)?

reason being is pioneer head units require you to be connected to the phone in order to use the head unit to make calls, phonebook, etc

with my nokia back in the day, provided bluetooth was on, i would sit in my car and turn my ignition on. about 10-15 seconds later, the headunit joins with the phone. the phone says its connected to 'Pioneer BT unit' and the headunit shows the battery and signal level, and shows the correct phonebook.

with my jasjam (running blacksatin wm6 - although had the same problem on wm5), the pioneer unit doesn't join automatically... it is only after i receive or make a call using the phone, that it quickly joins to the headunit. even then, the person could have started talking before the audio fully comes through...

however this is not a problem there on, as once the bluetooth connection has been made, it remains, and everything works as it should.

so is there any registry hacks or programs i can run that will allow the headunit to make the connection to the handsfree profile once ignition is on in the car?

Cheers,
Bill

mtcs
13th December 2007, 12:13 PM
hi bcx7,

I had his problem too. It may depend on what head unit you are using, but perhaps the solution is the same.

my pioneer head unit is a DEH-P75BT. It looks for a smartphone, but doesn't recognize the hermes as it's classed as a pda phone.

Solution:
Change the COD (Class of Device) from a PDA device to a smartphone device.

1. First make sure you've got a backup, or remember all settings you change in the registry.
2. Edit with a registry editor the following key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Bluetooth\SY S\COD

By default my T-Mobile Vario II has the value: 1048852 (decimal) for WM5 & 5374228 (decimal) for WM6. Change this to: 5374476 (decimal).
3. Soft restart your device
4. Your device should dentify itself as a smartphone, and my pioneer unit finds it without problems. Note that for my Vario II, I also have to discovery mode always on, so I also protect it with a PIN code.

On the head unit, scan for the devices, save it in one of the P1, P2 positions etc. Then when you switch on your ignition, the head unit should recognize it.

One final tip. My head unit doesn't see the Vario II unless the screen is on (device not in standby). If the screen is off (device in standby), and even though bluetooth is on and in discovery mode, the head unit won't see it. Once connected I put the device in standby and it stays connected just fine.

I found this information a while back on this forum, so credit to the original poster - sorry don't know who it was.

Hope thats helps.
Mike