Crankcase Emission Control System; Maintenance-Free Battery - Jeep Liberty 2008 Owner's Manual

• Do not shut off the engine or interrupt the ignition
when the transmission is in gear and the vehicle is in
motion.
• Do not try to start the engine by pushing or towing the
vehicle.
• Do not idle the engine with any ignition coil connec-
tors disconnected for prolonged periods.
• Do not idle the engine for prolonged periods during
very rough idle or malfunctioning operating condi-
tions.
• Do not allow vehicle to run out of fuel.

Crankcase Emission Control System

Proper operation of this system depends on freedom
from sticking or plugging due to deposits. As vehicle
mileage builds up, the PCV valve and passages may
MAINTAINING YOUR VEHICLE 427
accumulate deposits. If a valve is not working properly,
replace it with a new valve. Do not attempt to clean the
old PCV valve.
Check the ventilation hose for indication of damage or
plugging deposits. Replace if necessary.

Maintenance-Free Battery

Your vehicle is equipped with a maintenance-free battery.
You will never have to add water, nor is periodic main-
tenance required.
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