I observed something strange about the range indicator in my TLX. It tends to jump up and down wildly depending on what happened in the previous few minutes of driving. For example, in my morning drive to work today, it varied from 440 to 660, back to 450, and then back to 650 - all in about 20 miles. What's more, it doesn't just continuously respond as a function of the recent fuel consumption data. Instead, it goes through long periods of reasonable stability, to sudden jumps by 100-200 miles up or down in a matter of a minute. This seems like a very strange behavior. It would be much more reasonable to project the range based on historic mpg data, at least starting from the last fill-up, and this would actually produce a slowly-varying and useful indication. As it is, the range indication is practically random, and can only be mildly useful when the fuel is almost gone, and the variations are largely reduced. Is it one of those software bugs that need to be fixed?
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