I'm new to all this, so maybe this can help others like me.

Download the uVision Demo... https://www.keil.com/demo/eval/c166.htm

Download HxD Hex editor... http://mh-nexus.de/en/downloads.php?product=HxD

Load your ME7 BIN file in HxD then File>Export>32 Bit Intel HEX   (name & save  it appropriately)

Run uVision selecting C167xx as your target device (you can also change this later in Edit>Config)

Start the debugger Debug>Start/Stop Debug session.

In the disassemby window, right click and "Load Hex or Object File".

Browse to and select your Intel hex file and voila.

You can check the instruction set here http://www.keil.com/dd/chip/2906.htm.

ADIS16X from the Infineon site is also handy disassembler. It's good for small blocks of code. There is no need in compilers, linkers, etc to create some short function from scratch and add it into bin or to analyze some already integrated patch in big binary. Of course with help of hexeditor (for example Hexplorer). You can copy paste blocks of code bigger bin into smaller bin and then analyse/modify them and paste back.

Could you help me to disassembly my ecu with IDA?

Need same to know.
How can I create hex file from code if I write for example in notepad++ ?
Regards