Notes on Parallel Installation of TCU and ULF-SBX-H

Notes On Parallel Installation Of TCU And ULF-SBX-H

Notes on parallel installation of TCU and ULF-SBX-H

In this vehicle, the following control units are installed in parallel:
- TCU Telematics control unit
- ULF-SBX-H Interface box

These control units implement the following functions:
- TCU Telematic Control Unit The TCU covers all the telephone and Telematic functions. All aerials as well as other telephone hardware are connected to the TCU.
- ULF-SBX-H interface box High With parallel installation, the ULF-SBX-H exclusively operates the SA6FL optional equipment "USB audio interface". Telephone functions are not implemented in this control unit.

The installation location of the TCU Telematic Control Unit and the ULF SBX H interface box High is shown below with the E60 as an example.