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Checking the brake fluid in your 2004 Volkswagen Passat is easy and should be done once a month. On some Volkswagens, the owners manual suggests pumping the brake pedal 25 times before looking at the fluid level, be sure to check your owners manual to see if this applies to your 2004 Passat. In addition to checking the brake fluid level, you want to look at the color of the brake fluid in your Passat - if it is dark in color or it has been more than 2 years since you have changed it, you should consider having it changed - this will help make the internal components (which are expensive) last much longer.
If you need to add fluid to your Passat, it is important to check your owners manual for the correct type to add - it likely be either DOT 3, DOT 4 or DOT 5, also known as silicone brake fluid. Be sure to discard bottles of brake fluid that are over a year old - brake fluid sucks the moisture out of the air and the water vapor in the fluid can quickly rust out the brake lines in your Passat.
Carmakers are hiding interior fuse boxes all over the place these days - see how to check your interior fuses here!2004 Volkswagen Passat GLX 2.8L V6 Wagon
Coolant hoses wear out over time and need to be replaced - check 'em early and often2004 Volkswagen Passat GLX 2.8L V6 Wagon
If your battery has green or white cruddy deposits, it is probably not getting enough juice from and will likely wear out sooner2004 Volkswagen Passat GLX 2.8L V6 Wagon
Power steering fluid is easy to check and many people (mechanics included) often forget about - learn how here2004 Volkswagen Passat GLX 2.8L V6 Wagon
Learn where your spare tire and jack are located before you need it on the side of the road2004 Volkswagen Passat GLX 2.8L V6 Wagon
Got a short fuse? Don't blow a fuse, change it!2004 Volkswagen Passat GLX 2.8L V6 Wagon