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Old 12-08-2014, 10:07 PM
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Now I'm more confused than ever are TCU from Nav/DSP/Premium different?

Been reading dozens of bluetooth threads and my brain has been turned to mush.

I've got an early 04 E53 (Production 5/14/04) with S639A Preparation f mobile phone cpl. USA/CDN and S676A HiFi - No Nav, No DSP.

From everything I've read, my TCU won't actually do bluetooth, but a swap with a newer TCU should be plug and play.

Are there differences in the TCU's on Nav and/or DSP equipped cars?

Can I get a TCU from any 05/06 E53, E46, Z4?

Many thanks
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Old 03-05-2015, 08:31 AM
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Quote:
Originally Posted by spongerich View Post
Been reading dozens of bluetooth threads and my brain has been turned to mush.

I've got an early 04 E53 (Production 5/14/04) with S639A Preparation f mobile phone cpl. USA/CDN and S676A HiFi - No Nav, No DSP.

From everything I've read, my TCU won't actually do bluetooth, but a swap with a newer TCU should be plug and play.

Are there differences in the TCU's on Nav and/or DSP equipped cars?

Can I get a TCU from any 05/06 E53, E46, Z4?

Many thanks
I just installed a 10/04 TCU into my 4/04 built X5. It was a plug and play and it works perfect.
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Old 03-05-2015, 10:15 AM
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Quote:
Originally Posted by ScoobyDooBMW View Post
I just installed a 10/04 TCU into my 4/04 built X5. It was a plug and play and it works perfect.
Thanks. I haven't had much time to do any real troubleshooting, but I think that my problem is in my wiring (could be just a fuse). Neither my new TCU nor my original one shows up when I run diagnostics. If spring ever arrives, I'll get my multimeter out and check for power, CAN signals at the connector and work from there.
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