Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2009 Jeep Liberty 4WD V6-3.7LFACTORY OEM SERVICE PROCEDURE
Brakes and Traction Control: Description and Operation
DESCRIPTION
ESP and Power assist four wheel disc brakes are standard equipment. Front disc brake components consist of single piston calipers and ventilated rotors. Rear disc brakes use a drum in hat design for the parking brake which is activated by brake shoes pressing against the inside of the drum in hat rotor.
The parking brake mechanism is lever and cable operated. The cables are attached on a equalizer on the lever cable. The parking brakes are operated by a hand lever.
The vehicle is equipped with ESP (Electronic Stability Program). There are four wheel speed sensors, one sensor at each wheel to monitor input.
A dual diaphragm vacuum power brake booster is used for all applications. All models have an aluminum master cylinder with plastic reservoir.
Factory brake lining on all models consists of an organic base material combined with metallic particles. The original equipment linings do not contain asbestos.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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