My instrument cluster on 1992. 520i with digital display under speedometer is slowly going bad, speedo and revcounter are working fine, than they're not, tried to fix it few times, and I think the only solution is to change the whole thing and solve the problem.
The car has only 150500 km on display (around 92300 miles), and I want to preserve that as a value of this car. If I change cluster, I get another mileage,probably with much more Km, because I have to buy a used one.
I was thinking-the code plug preserves mileage and oddometer info. If I change instrument cluster, but maybe plug in my old code plug, will it work with it and do I get my mileage back with new cluster?

It would be great, if it works.