Greetings.

I have a 2002 Mini Cooper S Do anyone know which Chip is the ROM on the Instrument Cluster? I need to migrate mine on to a used one I purchased to retain the feature coding.

Location or Chip# is what i'm looking for.

I know this isn't an easy question - so if you don't know, but know where to find this info - I would appreciate a pointer.

Thanks!

 

It's an interesting idea, to swap a chip into a used gauge and avoid buying a brand new replacement. However, I can see potential problems for making it work:

1. The board or firmware may be at a different revision and whatever is stored in your original ROM might not be compatible.
2. All components use surface mount technology (nothing is socketed). You will need excellent and high precision soldering skills to swap a chip.
3. Most feature coding is probably stored in the BC1 module in the footwell, not the instrument cluster. A copy of the odometer value might be stored there (I heard there are 3 copies of the mileage stored in different modules). I can't think of many coded features that would be specific to the instrument cluster.

All that aside, I got curious and took apart a speedo to take a look (I have an extra speedo from developing my InvisiLens product). The control module for the instrument cluster is the circuit board in back of the speedo. I see no chips that identify as flash memory. It is probably integrated inside one of the controller chips.