Grunding RCD 300 help

[simche]

Today i decode Grunding RCD 300 and want install he in the Golf MKV
I read eeprom 24C32 анд find code but any time when i turn off radio on the left button any next start radio looking for code again.After entering radio work to the again turn off.
I check wires but not find nothing.(pin 15 and pin 16 on the 12V)
Any idea what is the problem?
Thanks in advance!

[kubixorek]

check if you sold your eeprom or memory paths well.

[kubixorek]

the situation looks like it was not + ACC

[audiopoint]

check/resolder resistor around 24c32
focus on pin 8 of 24c32 must be around 5V