why o why... so expensive & so soon,

You would think it is premature. My thinking is the brake fluid got contaminated somehow, moisture , wrong fluid etc Make sure when it is replaced they replace ALL brake fluid in the system just in case. Good Luck

hi, i had the exact same issue with mine. when we brought it to the dealer they said it was dealer only, so i went with it. however it is not a dealer only part and they over charge you by far. i complained enough because my mecanic said it is a part that shouldnt go so they told me it was an $800 part and they would do it for $50. but if you want to do it your self there is a link to the part. Hope this hleps http://www.partstrain.com/store/?PN=4294957321+2258&VN=4294967170+4294967085+4294965636+4294966832+4294966803&N=0&Nr=AND(universal:0)&props=Part:Brake+Master+Cylinder

I own (for the time being) a 2008 Nissan Altima 2.5SL with approx. 48k miles on it. My car has been plagued with the same issue that you are describing: the brake master cylinder has an internal crack and therefore leaks brake fluid inside of the housing and into the brake booster. The local dealer (where I religiously service) has advised me that the cost of repair will be right around $500. My Service Manager and Service Advisor have advised me that this is a known issue. After arming myself with a little bit of internet research (NHTSA etc) I called the NISSAN North America Customer Care phone number (800-647-7261) and asked them to consider my issues, my service history, my willingness to contribute to the dealer network by servicing at a dealer and financially assist me with the cost of the repairs needed. An hour after my initial call and claim, a "Regional Specialist" named Brandon ext.457221 called me and declined my request for assistance. Keep in mind that he did not call my dealer for background, servicing history or anything before declining. I asked him to do so, he did and called back 10 mins. later with the same decline. I will be writing my state's Department of Consumer Affairs, my State's Attorney General's Office and the NHTSA with formal complaints. I encourage everyone who has the same issues to do the same - perhaps the company will stand behind their often boasting but equally questionable 5,000+ quality assurance tests by issuing a recall or [at the very least] a safety campaign to remedy the issues.