Tl*the contact owns a 2005 chrysler 300c. while driving at approximately 30 mph, the contact engaged the brakes and the brakes locked. on several occasions she had to pump the brakes to unlock the brakes. she stated the brakes also makes a creaking noise when engaged. the failure occurred daily. the vehicle has been taken an authorized dealership where they sprayed the brakes with a substance similar to wd4 and replaced the front brake pads. the contact stated the failure was occurring again and she had an appointment with the dealer. she was unable to provide a vin at the time of the complaint. the failure mileage was unknown. the current mileage was approximately 48,000.