I purchased my RX 400H as well in the US. I informed myself in advance, and there is no special button sequence you can enter to convert miles to km in the odometer. Nor can you change Farenheit to Celcuis. The only solution available, will also void your warranty and that involves swapping out the odometer / speedometer cluster. Well, that is what I had investigated back in January 2007.
Cheers,
MadloR
Thanks for the info...I assume you are from Canada? From the research I've done it seems that you do not have to convert the odometer from miles to KMS as part of the RIV requirements...is that you what you found as well? Also, any chance you have information on a good shipping terminal in the Niagara Falls NY area...planning to ship it to the border in NY but would like to get a referral for a depot to hold it at until January 1st so I can save on the GST reduction :)