In case there was no adaptation channel or coding for cars of your era: Try to code cluster for Germany for the sake of experiment (cluster will switch odometer from miles to km during the experiment). I'm thinking your cluster is currently coded for the UK and the feature was not available in the UK. I'm just making a guess here that the feature was automatically ON for German and EU based cars and automatically OFF for the rest of the world. When they upgraded cluster software in later cars they may have created adaptation channel 19 to specifically control the feature independently from country. This is just my guess.
As HP mentioned, wait 24 hours after each experiment to allow cluster to pickup signal. God knows when your version of software is doing the synch.
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I'd rather drive on left
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