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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (Base Brakes (Service Information)) >> Hydraulic/Mechanical >> BOOSTER, Power Brake, Hydro-Boost >> Diagnosis and Testing >> Diagnosis And Testing - Hydraulic Booster >> Hissing

Diagnosis And Testing - Hydraulic Booster: Hissing

WARNING: This page is about a different car, the 2011 RAM Pickup and 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

A hissing noise may be noticed when above normal brake pedal pressure is applied, 40 lbs. or above. The noise will be more noticeable if the vehicle is not moving. The noise will increase with the brake pedal pressure and an increase of system operating temperature.