2012 JEEP GRAND CHEROKEE wiper blades

Windshield Wiper Operation
Rotate the end of the lever to one of the first four detent
positions for intermittent settings, the fifth detent for low
wiper operation and the sixth detent for high wiper
operation.CAUTION!
Always remove any buildup of snow that prevents
the windshield wiper blades from returning to the
“park” position. If the windshield wiper switch is
turned off, and the blades cannot return to the “park”
position, damage to the wiper motor may occur.
Intermittent Wiper System
Use one of the four intermittent wiper settings when
weather conditions make a single wiping cycle, with a
variable delay between cycles, desirable. At driving
speeds above 10 mph (16 km/h), the delay can be
regulated from a maximum of approximately 18 seconds
between cycles (first detent), to a cycle every one second
(fourth detent).
Windshield Wiper Operation
190 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

The sensitivity of the system can be adjusted with the
multifunction lever. Wiper delay position 1 is the least
sensitive, and wiper delay position 4 is the most sensi-
tive. Setting 3 should be used for normal rain conditions.
Settings 1 and 2 can be used if the driver desires less
wiper sensitivity. Settings 4 can be used if the driver
desires more sensitivity. Place the wiper switch in the
OFF position when not using the system.
NOTE:
•The Rain Sensing feature will not operate when the
wiper switch is in the low or high-speed position.
•The Rain Sensing feature may not function properly
when ice, or dried salt water is present on the wind-
shield.
•Use of Rain-Xor products containing wax or silicone
may reduce Rain Sensing performance.
•A customer programmable feature in the Electronic
Vehicle Information Center (EVIC) allows the Rain
Sensing feature to be turned off. Refer to “Electronic
Vehicle Information Center (EVIC)/Personal Settings
(Customer-Programmable Features)” in “Understand-
ing Your Instrument Panel” for further information.
The Rain Sensing system has protection features for the
wiper blades and arms, and will not operate under the
following conditions:
•Low Ambient Temperature — When the ignition is
first turned ON, the Rain Sensing system will not
operate until the wiper switch is moved, vehicle speed
is greater than 0 mph (0 km/h), or the outside tem-
perature is greater than 32°F (0°C).
3
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 193

MAINTAINING YOUR VEHICLE
CONTENTS
Engine Compartment — 3.6L ............. 573
 Engine Compartment — 5.7L ............. 574
 Onboard Diagnostic System – OBD II ....... 575
▫ Loose Fuel Filler Cap Message ........... 575
 Emissions Inspection And Maintenance
Programs ............................ 576
 Replacement Parts ..................... 577
 Dealer Service ........................ 578
 Maintenance Procedures ................. 578
▫ Engine Oil ......................... 579 ▫
Engine Oil Filter ..................... 582
▫ Engine Air Cleaner Filter ............... 582
▫ Maintenance-Free Battery .............. 583
▫ Air Conditioner Maintenance ............ 585
▫ Body Lubrication .................... 586
▫ Windshield Wiper Blades ............... 586
▫ Adding Washer Fluid ................. 588
▫ Exhaust System ..................... 589
▫ Cooling System ..................... 592
7

Refrigerant Recovery And Recycling
R-134a Air Conditioning Refrigerant is a hydrofluoro-
carbon (HFC) that is endorsed by the Environmental
Protection Agency (EPA) and is an ozone-saving product.
However, the manufacturer recommends that air condi-
tioning service be performed by authorized dealers or
other service facilities using recovery and recycling
equipment.
Body Lubrication
Locks and all body pivot points, including such items as
seat tracks, door hinge pivot points and rollers, liftgate,
tailgate, sliding doors and hood hinges, should be lubri-
cated periodically with a lithium based grease, such as
MOPARSpray White Lube or equivalent to assure
quiet, easy operation and to protect against rust and
wear. Prior to the application of any lubricant, the parts
concerned should be wiped clean to remove dust and
grit; after lubricating excess oil and grease should be
removed. Particular attention should also be given to hood latching components to ensure proper function.
When performing other underhood services, the hood
latch, release mechanism and safety catch should be
cleaned and lubricated.
The external lock cylinders should be lubricated twice a
year, preferably in the Fall and Spring. Apply a small
amount of a high quality lubricant, such as MOPAR
Lock Cylinder Lubricant or equivalent directly into the
lock cylinder.Windshield Wiper Blades
Clean the rubber edges of the wiper blades and the
windshield periodically with a sponge or soft cloth and a
mild nonabrasive cleaner to remove accumulations of salt
or road film.
Operation of the wipers on dry glass for long periods
may cause deterioration of the wiper blades. Always use
washer fluid when using the wipers to remove salt or dirt
from a dry windshield.
586 MAINTAINING YOUR VEHICLE

Avoid using the wiper blades to wipe frost or ice from the
windshield. Keep the blade rubber out of contact with
petroleum products such as engine oil, gasoline, etc.
NOTE:Life expectancy of wiper blades varies depend-
ing on geographical area and frequency of use. Poor
performance of blades may be present with chattering,
marks, water lines or wet spots. If any of these conditions
are present, clean the wiper blades or replace as neces-
sary.
Rear Wiper Blade Removal/Installation
1. Lift the pivot cap on the rear wiper arm upward, this
will allow the rear wiper blade to be raised off of the
liftgate glass. NOTE:The rear wiper arm cannot be raised fully
upward unless the pivot cap is raised first.
2. Lift the rear wiper arm upward to raise the wiper
blade off of the liftgate glass.1—WiperArm
2 — Pivot Cap
7
MAINTAINING YOUR VEHICLE 587

clean the wiper blades, this will help blade performance.
To prevent freeze-up of your windshield washer system
in cold weather, select a solution or mixture that meets or
exceeds the temperature range of your climate. This
rating information can be found on most washer fluid
containers.
WARNING!
Commercially available windshield washer solvents
are flammable. They could ignite and burn you. Care
must be exercised when filling or working around
the washer solution.
Exhaust System
The best protection against carbon monoxide entry into
the vehicle body is a properly maintained engine exhaust
system.
If you notice a change in the sound of the exhaust system;
or if the exhaust fumes can be detected inside the vehicle;
or when the underside or rear of the vehicle is damaged;
have an authorized technician inspect the complete ex-
haust system and adjacent body areas for broken, dam-
aged, deteriorated, or mispositioned parts. Open seams
or loose connections could permit exhaust fumes to seep
into the passenger compartment. In addition, inspect the
exhaust system each time the vehicle is raised for lubri-
cation or oil change. Replace as required.
7
MAINTAINING YOUR VEHICLE 589

Windows.............................. 41
Power ............................. 41
Windshield Defroster ................... 96,396
Windshield Washers ...................... 189
Fluid ............................. 588 Windshield Wiper Blades
.................. 586
Windshield Wipers ....................... 189
Wipers, Intermittent ...................... 190
Wipers, Rain Sensitive .................... 192
10
INDEX 675