Stored Honda CR-V picks up a bad case of rotor rust - Minneapolis Star Tribune
Q: We stored our 2013 Honda CR-V in our detached garage last winter. When we drove it last spring there was a loud grinding when the brakes were applied. The Honda dealer told us that the brake rotors had rusted over the winter and that to remove the build-up was not covered by warranty and would reduce the longevity of the rotors. They told us it would disappear with usage but the grinding has not gone away. A: A light buildup of corrosion on the surface of cast iron brake rotors after a period of non-use is not uncommon. In fact, our Passat develops enough to feel and create a light grinding sound after being parked for just a few days in damp conditions. Applying the brakes while driving the car quickly “cleans” the rotors and eliminates the noise. However, since the grinding hasn’t been eliminated during normal driving, the rust may be deep enough that replacement is warranted. To prevent this from happening again, spray the brake rotors with an aerosol rust preventative when you store the car for the winter, then flush the rotors with aerosol brake cleaner prior to driving in the spring. I have had it into BMW service at least five or six times and they say it is fixed, but as soon as it gets cold — same thing. Last time I complained, they said BMW has no known solution. Source: www.startribune.com
