XSeries-forum

Blu-tooth installation conked years ago - just got around to having a look - fault seems to be no 'telephone on'  signal from the TCU to the BM54 so the BM54 does not enable the front speakers during a call - they can hear you, you can't hear them. Decided to get the phone working again and fit a ULF in place of the TCU in order to get VR. There are some differences in the pin-outs between the ULF and the TCU so for starters, can anyone confirm that the correct pin-outs for the ULF would be as follows:-

1 - Mic + ve
11  - eject box 'Cradle On' (i.e. mobile-specific - e.g. Nokia xxxx - cradle installed in eject box)
15  - i - Bus
17  - + 12v to eject box and ULF
19  - Mic - ve
21  - Mic shield
32  - 'Pairing' (from eject box)
33  - 'Telephone On' (to BM54)
35  - + 12v with ignition on
36  - 'Ground' to eject box and ULF
37  -  Front speaker (L/R)
38 -  Front speaker (L/R)
51 -  'Mute' (to BM54)

Thanks in anticipation

Someone must know surely ?

Does this help? Remember that VR is not built into the ULF you will I think need the VR box that will use the connector that has the blue SES jumper plug in it

No - VR is built in on the later ULFs- any ULF with "mit ses" on the label has VR capability - may not be factory-enabled but readily sorted via DIS or a Resler I/F. No jumper plugs on the facelift E53s BTW

Sorted after 4 years - a working bluetooth system again - and with VR - well happy!

[quote="nujon"]
No - VR is built in on the later ULFs- any ULF with "mit ses" on the label has VR capability - may not be factory-enabled but readily sorted via DIS or a Resler I/F. No jumper plugs on the facelift E53s BTW
[/quote]

I have a Gen1 ULF with VR!!!

Might need to see what happened there then!???!??!?

The factory fitted TCU had failed (the Motorola units like mine were notoriously unreliable btw) - so I fitted a Gen 13 ULF - all sweet now but not plug and play as you have to rewire the 54 pin plug