seems the most common issue with BMWs - atleast e90 related - seems to be the electronic water pumps and there $500 cost of replacement.
water pumps should not be that much, oh well.
but are there any tell-tale signs that your pump is going out? i know right about the 100k mark is when they start acting up, I don't have half of that, but just want to keep an eye on it over the next year or so just in case anything starts acting up.
since there are no water temp gauges how can I keep track of this? if they scan my CPU are there any error codes there would point to the water pump?