Orange5 Pinout to Volvo CEM R5F64524KFD

 Reading and writing Volvo CEM R5F64524KFD is possible in two ways with Orange5 programmer via SPI and UART.

 

Model example:

Volvo XC70 diesel CEM p3

 

Did it with orange5 programmer. The processor is Renesas R5F64524KFD.

 

1. We remove and disassemble the CEM.

2. Here are R5F64524KFD SPI and UART pinouts to orange 5

Here we chose SPI (no need to lift the 19th leg).

3. Select the processor and reading method

4. Solder according to the diagram above

5. Then read, edit the dump and write it back.

For example, if need to activate the webasto control with standard key.

This function is located at the addresses in the photo below (on the left is the original, on the right is the corrected one).