Quote:
Originally Posted by flatlander
It looks like the TCU is used if you have "BMW Assist" right? Is BMW assist the telephone button on steering wheel? or the subscription service from BMW?
I have the telephone button on the wheel and the radio unit. I hope to get the right equipment to pair my iphone with the car.
|
You can use either system in your car. Assist is totally separate, and is only available in 2004+ cars (I think). The TCU supports Assist, but you can use either option in any car. Here are the major differences between the two systems.
ULF has voice recognition enabled in the factory default coding
TCU has voice recognition disabled in the factory default coding
NavCoder can enable and disable voice recognition in both TCU and ULF modules
ULF has the complete VR instruction set that includes navigation commands
TCU only has the telephone-related Vr instruction set
ULF requires a pairing button, typically with an eject box and and adapter wiring
TCU does not require a pairing button or eject box
TCU seems to have better in-car volume than the ULF (my own personal experience comparing my ULF to two other TCU installations).
TCU shows signal strength on the navigation screen telephone menu.