According to Chrysler Brake Fluid is a lifetime fluid and does NOT need to be changed. They also consider the vehicle life to be 100k miles, and if you want to last longer, I'd consider changing those "lifetime" fluids.
The brake fluid will abosrb moisture right out of the air and suck it through the rubber hoses and seals, this lowers the boiling point of the brake fluid and if you get your brakes hot, it could flash into vapor and reduce the braking force and response on your brakes. NOT likely to happen, but "I" consider it a worthy reason, amoungst others, to flush the brakes myself.
Racing causes brake fluid to boil, the only cases on the street I've heard of boiling brake fluid, has been 10 year old brake fluid in a vehicle that the owner rode the brakes the whole way down a mountain side. So, again, possible, especially if you're stupid, but unlikely. If you tow a heavy load in a hilly area, you may be getting into that sever service that could boil 'wet' brake fluid.
Fresh brake fluid that does NOT have water in it, is far more likely to keep your brake components lasting longer and more trouble free, the hydrualic parts.
Personally, I would flush the brake fluid every 3 or 4 years, actually I do it more often, but I admitt, I'm doing overkill.
If you mess up the brake bleeding bad enough, you could get air in the ABS module, the only way to bleed the ABS module is with a Dealer Scan Tool. I've bled brakes for years on my Chrysler ABS vehicles and never had this happen, but it is a risk. If it happens, its just a quick trip to the dealer, although they'll always charge more than they should for the service.
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