Weird Problem on my 88 735i

[George5er]

Hi guys i got a weird problem on my car its a 1988 735i 5 speed
everytime i shut the car off it loses it memory like radio,trip,time
and date on OBC ect ect... im not sure why this is happing and it runs
fine so any input would be helpful.

Thanks

[KC Ron Carter]

This is an e24 diagram so the fuse number will be different.

All those units have two power feeds, memory and normal operation.

If the memory feed is missing you get what you have.



Later,