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If a BT compatible TCU installed...

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Old 02-25-2005, 02:48 PM
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My SA told me that if I upgrade my TCU to the new BT compatible version, my assist will stop working. Is this true? Has anyone with a pre 03 '04 e60 have both BT and assist working? Does having NAV make a difference?
Old 02-25-2005, 07:10 PM
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Originally Posted by moballa' date='Feb 25 2005, 05:48 PM
My SA told me that if I upgrade my TCU to the new BT compatible version, my assist will stop working.? Is this true?? Has anyone with a pre 03 '04 e60 have both BT and assist working?? Does having NAV make a difference?
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I replaced my TCU to get BT to work fully. My car was built on March 01, 2004 and was one of the last to get the old TCU.

I have BT working with Assist in complete harmony. I would suggest you SA does not have his facts straight. I don't think that NAV has anything to do with BT and the TCU.
Old 02-26-2005, 11:30 AM
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Originally Posted by ademitt' date='Feb 26 2005, 05:10 AM
I don't think that NAV has anything to do with BT and the TCU.
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It has!
Old 02-26-2005, 11:47 AM
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Originally Posted by ademitt' date='Feb 26 2005, 05:10 AM
I don't think that NAV has anything to do with BT and the TCU.
[snapback]94553[/snapback]
It does but you can get them both to work with a new TCU on early builds (at least w/o NAV).
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