My dealer's 45K service recommends a scheduled brake fluid and coolant flush.
I know full well that brake fluid is hygroscopic, but I have a hard time believing that it's absorbed enough moisture to warrant flushing the lines (never take the cap off the master).

What do you think about this? (the coolant can't hurt to do though).

 

Coolant is good for 105K. Says so on the underside of your hood. Brake fluid flush is usually recommended every two years or so, for the reason you mentioned--moisture in the fluid corrodes the heck out of many of the components, including the expensive ABS mechanisms. I've gone as long as five years before flushing brake fluid on a car with ABS and never had any detrimental effects.

 

I agree with 41, although I feel that we need to judge the condition of the fluid (if visible) other than going by a fixed interval. Those numbers in the manual or under the hood is the maximum tolarence the item can left untouched should you ever want to test the limit. I wouldn't gamble. I usually get the brake system flushed everyt time I replace the brake fluid since it doesn't cost that much more. Like 41 said, if the ABS pump is bad, that will cost you a fortune.