trailer JEEP WRANGLER UNLIMITED 2018 Owner handbook (in English)

TRAILER TOWING
Trailer Towing Weights (Maximum Trailer Weight Ratings)
Model Frontal Area Max. GTW (Gross Trailer Wt.) Max. Trailer Tongue Wt. (See Note)
Two–Door 20 ft2 (1.86 m2) 3,300 lb (1,497 kg) 165 lb (75 kg)
Four–Door 30 ft2 (2.79 m2) 5,500 lbs (2,495 kg) 275 lbs (125 kg)
When towing a trailer the technically permissible laden weight may be exceeded by not more than 10% or 220 lbs (100 kg), whichever is lower
provided the operating speed is restricted to 62mph (100km/h) or less. Trailer sway control device is recommended when towing more than
1000 lbs (454 kg).
RECREATIONAL TOWING (BEHIND MOTORHOME, ETC.)
Towing This Vehicle Behind Another Vehicle
Towing Condition Wheels OFF the Ground Four-Wheel Drive Models
Flat Tow NONESee Instructions
•
Automatic transmission in PARK.
• Transfer case in NEUTRAL (N).
• Disconnect negative battery cable.
• Tow in forward direction.
Dolly TowFront NOT ALLOWED
Rear NOT ALLOWED
On Trailer ALL OK
NOTE:
When towing your vehicle, always follow applicable laws. Contact local authorities for additional details.
171

Recreational Towing — Four-Wheel Drive
Models
NOTE:
The transfer case must be shifted into NEU-
TRAL (N), transmission must be in PARK, for
recreational towing.
CAUTION!
• DO NOT dolly tow any 4WD vehicle.
Towing with only one set of wheels on
the ground (front or rear) will cause
severe transmission and/or transfer case
damage. Tow with all four wheels either
ON the ground, or OFF the ground (using
a vehicle trailer).
• Tow only in the forward direction. Towing
this vehicle backwards can cause severe
damage to the transfer case.
• Automatic transmissions must be
placed in PARK for recreational towing.
• Before recreational towing, perform the
procedure outlined under “Shifting Into
NEUTRAL (N)” to be certain that the
transfer case is fully in NEUTRAL (N).
Otherwise, internal damage will result.
CAUTION!
• Towing this vehicle in violation of the
above requirements can cause severe
transmission and/or transfer case dam-
age. Damage from improper towing is
not covered under the New Vehicle Lim-
ited Warranty.
• Do not use a bumper-mounted clamp-on
tow bar on your vehicle. The bumper
face bar will be damaged.
Shifting Into NEUTRAL (N)
Use the following procedure to prepare your
vehicle for recreational towing.
WARNING!
You or others could be injured or killed if
you leave the vehicle unattended with the
transfer case in the NEUTRAL (N) position
without first fully engaging the parking
brake. The transfer case NEUTRAL (N)
position disengages both the front and rear
driveshafts from the powertrain, and will
allow the vehicle to roll, even if the auto-
matic transmission is in PARK. The park-
WARNING!
ing brake should always be applied when
the driver is not in the vehicle.
CAUTION!
It is necessary to follow these steps to be
certain that the transfer case is fully in
NEUTRAL (N) before recreational towing
to prevent damage to internal parts.
1. Bring the vehicle to a complete stop on
level ground.
2. Press and hold the brake pedal.
3. Shift the transmission into NEUTRAL.
4. Turn the engine OFF.
5. Shift the transfer case lever into NEU-
TRAL (N).
6. Start the engine.
7. Shift the transmission into REVERSE.
8. Release the brake pedal for five seconds
and ensure that there is no vehicle
movement.
STARTING AND OPERATING
172

Cavity Cartridge Fuse Micro Fuse Description
F34 – 10 Amp Red Electronic Stability Control (ESC)/Electric Hydraulic
Power Steering (EHPS)/Smart Bar Control Module
(SBCM) WAKE UP
(*)
F35 30 Amp Pink – BRAKE VAC PMP — If Equipped
(*)
F36 30 Amp Pink – TRAILER TOW MOD — If Equipped
F37 30 Amp Pink – TRAILER TOW CONN 7W — If Equipped
F38 20 Amp Blue – Engine Control Module ECM
(*)
F39 – – Spare
F40 – 15 Amp Blue DriveTrain Control Module (DTCM)/Axle Lock (AXLE LOC)
FT_RR
(*)
F41 – 15 Amp Blue Instrument Cluster (IC)/Security GateWay (SGW) WAKE
UP
(*)
F42 – 10 Amp Red Power Control Relay Control Feed (Electric Stop/Start)/
Spare (Belt Starter Generator) -- If Equipped
(*)
F43 20 Amp Yellow PWR OUTLET (CARGO) BATT
(*)
F44 – 10 Amp Red InfraRed Camera (IRCAM) HEATERS
(*)
F45 – 20 Amp Yellow PWR OUTLET (CARGO) IGN*
(*)
IN CASE OF EMERGENCY
184

Cavity Cartridge Fuse Micro Fuse Description
F90 20 Amp Blue – TRAILER TOW PARK LMP — If Equipped
F91 – 20 Amp Yellow HORN
F92 40 Amp Green – HD ACCY #2 — If Equipped
(*)
F93 40 Amp Green – HD ACCY #1 — If Equipped
(*)
F94 – 10 Amp Red Tire Pressure Monitor (TPM)/RF Hub system (CORAX)
(*)
F95 – – Spare
F96 – 10 Amp Red PWR MIRROR SW
F97 – 20 Amp Yellow RADIO/TBM
F98 – 10 Amp Red SW BANK-HD ELEC/OFF ROAD
(*)
F99 – – Spare
F100 30 Amp Pink – ESC-ECU & VALVES
(*)
F101 30 Amp Pink – DriveTrain Control Module (DTCM)
(*)
F102 – 15 Amp Blue DUAL USB PORT
F103 – 15 Amp Blue HD ACCY #3 — If Equipped
(*)
F104 – 15 Amp Blue PPU COOL PUMP — If Equipped
(*)
IN CASE OF EMERGENCY
188

Cavity Cartridge Fuse Micro Fuse Description
F105 – 10 Amp Red Integrated Center Stack (ICS)/Heat Ventilation Air Condi-
tioning (HVAC)
(*)
F106 40 Amp Green – Electronic Speed Control (ESC)-PUMP MTR
(*)
F107 – 20 Amp Yellow TRAILER TOW STOP/TURN LT — If Equipped
F108 – 15 Amp Blue HD ACCY #4 — If Equipped
(*)
F109 – 20 Amp Yellow TRAILER TOW STOP/TURN RT — If Equipped
F110 30 Amp Pink – POWER INVERTER
(*)
F111 20 Amp Blue – TRAILER TOW BACKUP — If Equipped
CAUTION!
• When installing the power distribution
center cover, it is important to ensure
the cover is properly positioned and fully
latched. Failure to do so may allow water
to get into the power distribution center
and possibly result in an electrical sys-
tem failure.
• When replacing a blown fuse, it is impor-
tant to use only a fuse having the correct
amperage rating. The use of a fuse with a
CAUTION!
rating other than indicated may result in
a dangerous electrical system overload.
If a properly rated fuse continues to
blow, it indicates a problem in the circuit
that must be corrected.
JACKING AND TIRE
CHANGING
WARNING!
• Do not attempt to change a tire on the
side of the vehicle close to moving traf-
fic. Pull far enough off the road to avoid
the danger of being hit when operating
the jack or changing the wheel.
189

Mileage or time passed (which-
ever comes first)
7,500
15,000
22,500
30,000
37,500
45,000
52,500
60,000
67,500
75,000
82,500
90,000
97,500
105,000
112,500
120,000
127,500
135,000
142,500
150,000
Or Months: 12 24 36 48 60 72 84 96 108 120 132 144 156 168 180 192 204 216 228 240
Or Kilometers:
12,000
24,000
36,000
48,000
60,000
72,000
84,000
96,000
108,000
120,000
132,000
144,000
156,000
168,000
180,000
192,000
204,000
216,000
228,000
240,000
Visually inspect condition of:
exterior bodywork, underbody
protection, pipes and hoses (ex-
haust - fuel system - brakes),
rubber elements (boots, sleeves,
bushings, etc.).XXX X X X X X X X
Inspect the front suspension, tie
rod ends and boot seals, replace
if necessary.XX X X X X
Inspect the front and rear axle
fluid, change if using your ve-
hicle for police, taxi, fleet, of-
froad or frequent trailer towing.XX X X X
Inspect the transfer case fluid. X X X
Inspect the CV/Universal joints. X X X X X X X X X X
Change brake fluid every
24 months if using DOT 4 brake
fluid. ***XXX X X X X X X X
Adjust parking brake on vehicles
equipped with four-wheel disc
brakes.XX X X X
Replace engine air cleaner filter. X X X X X
211

Mileage or time passed (which-
ever comes first)
7,500
15,000
22,500
30,000
37,500
45,000
52,500
60,000
67,500
75,000
82,500
90,000
97,500
105,000
112,500
120,000
127,500
135,000
142,500
150,000
Or Months: 12 24 36 48 60 72 84 96 108 120 132 144 156 168 180 192 204 216 228 240
Or Kilometers:
12,000
24,000
36,000
48,000
60,000
72,000
84,000
96,000
108,000
120,000
132,000
144,000
156,000
168,000
180,000
192,000
204,000
216,000
228,000
240,000
Replace air conditioning/cabin
air filter.XX X X X X
Replace spark plugs (2.0L En-
gine) ****XX X X X X
Replace spark plugs (3.6L En-
gine) ****XX
Replace accessory drive belt(s).X
Flush and replace the engine
coolant at 10 years or
150,000 miles (240,000 km)
whichever comes first.XX
Change transfer case fluid if us-
ing your vehicle for any of the
following: police, taxi, fleet, or
frequent trailer towing.XX
Inspect and replace PCV valve if
necessary. *****X
* The actual interval for changing the oil and
replacing the engine oil filter depends on the
vehicle usage condition, it is signaled bythew warning light or message (if equipped)
in the instrument cluster display. It should
not exceed 10,000 miles (16,000 km) or
12 months.** See “Severe Duty Conditions” in this sec-
tion.
*** DOT 4 brake fluid is time based only;
mileage intervals do not apply.
SERVICING AND MAINTENANCE
212

**** The spark plug change interval is mile-
age based only, yearly intervals do not apply.
***** This maintenance is recommended by
the manufacturer to the owner, but is not
required to maintain emissions warranty.
WARNING!
• You can be badly injured working on or
around a motor vehicle. Do only service
work for which you have the knowledge
and the right equipment. If you have any
doubt about your ability to perform a
service job, take your vehicle to a com-
petent mechanic.
• Failure to properly inspect and maintain
your vehicle could result in a component
malfunction and effect vehicle handling
and performance. This could cause an
accident.
Severe Duty Conditions
Change the engine oil and engine oil filter at
every 4500 miles (7,500 km) or 6 months if
using your vehicle under any of the following
severe duty conditions:• Stop and go driving.
• Driving in dusty conditions.
• Short trips of less than 10 miles (16 km).
• Trailer towing.
• Taxi, police, or delivery service (commercial
service).
• Off-road or desert operation.
Scheduled Servicing — Diesel Engine
Your vehicle is equipped with an automatic
oil change indicator system. The oil change
indicator system will remind you that it is
time to take your vehicle in for engine oil
replacement.
On vehicles equipped with instrument cluster
display, “Oil Change Required” will be dis-
played and a single chime will sound, indi-
cating that an oil change is necessary.
On non-instrument cluster display equipped
vehicles, “Change Oil” will flash in the instru-
ment cluster odometer and a single chime
will sound, indicating that an oil change is
necessary.Based on engine operation conditions, the oil
change indicator message will illuminate.
This means that service is required for your
vehicle. Operating conditions such as fre-
quent short-trips, trailer tow, extremely hot or
cold ambient temperatures will influence
when the “Oil Change Required” message is
displayed. Severe Operating Conditions can
cause the change oil message to illuminate
as earlier than specified. Have your vehicle
serviced as soon as possible, within the next
500 miles (805 km).
NOTE:
•The actual interval for changing engine oil
and replacing the engine oil filter depends on
the vehicle usage conditions, and is signaled
by the warning light or message in the instru-
ment cluster. In any case, it must never ex-
ceed two years. If the vehicle is used mainly
for city driving, change the engine oil and
filter every year.
•Flush and replace the engine coolant at
120 months or 150,000 miles (240,000 km)
whichever comes first.
213

Tire And Loading Information Placard
This placard tells you important information
about the:
1. Number of people that can be carried in
the vehicle.
2. Total weight your vehicle can carry.
3. Tire size designed for your vehicle.
4. Cold tire inflation pressures for the front,
rear, and spare tires.
Loading
The vehicle maximum load on the tire must
not exceed the load carrying capacity of the
tire on your vehicle. You will not exceed the
tire's load carrying capacity if you adhere to
the loading conditions, tire size, and cold tire
inflation pressures specified on the Tire andLoading Information placard in “Vehicle
Loading” in the “Starting And Operating”
section of your Owner’s Manual.
NOTE:
Under a maximum loaded vehicle condition,
gross axle weight ratings (GAWRs) for the
front and rear axles must not be exceeded.
To determine the maximum loading condi-
tions of your vehicle, locate the statement
“The combined weight of occupants and
cargo should never exceed XXX kg or XXX lbs”
on the Tire and Loading Information placard.
The combined weight of occupants, cargo/
luggage and trailer tongue weight (if appli-
cable) should never exceed the weight refer-
enced here.
Steps For Determining Correct Load
Limit—
(1) Locate the statement “The com-
bined weight of occupants and cargo
should never exceed XXX kg or
XXX lbs.” on your vehicle's placard.(2) Determine the combined weight of
the driver and passengers that will be
riding in your vehicle.
(3) Subtract the combined weight of
the driver and passengers from XXX kg
or XXX lbs.
(4) The resulting figure equals the
available amount of cargo and luggage
load capacity. For example, if “XXX”
amount equals 1400 lbs. and there
will be five 150 lb passengers in your
vehicle, the amount of available cargo
and luggage load capacity is 650 lbs.
(1400-750 (5x150) = 650 lbs.)
(5) Determine the combined weight of
luggage and cargo being loaded on the
vehicle. That weight may not safely
exceed the available cargo and lug-
gage load capacity calculated in Step
4.
Tire And Loading Information Placard
227

(6) If your vehicle will be towing a
trailer, load from your trailer will be
transferred to your vehicle. Consult
this manual to determine how this
reduces the available cargo and lug-
gage load capacity of your vehicle.
Metric Example For Load Limit
For example, if “XXX” amount equals 635 kg
and there will be five 68 kg passengers in
your vehicle, the amount of available cargo
and luggage load capacity is 295 kg (635-
340 (5x68) = 295 kg) as shown in step 4.
NOTE:
• If your vehicle will be towing a trailer, load
from your trailer will be transferred to your
vehicle. The following table shows ex-
amples on how to calculate total load,
cargo/luggage, and towing capacities of
your vehicle with varying seating configura-
tions and number and size of occupants.
This table is for illustration purposes only
and may not be accurate for the seating and
load carry capacity of your vehicle.• For the following example, the combined
weight of occupants and cargo should never
exceed 865 lbs (392 kg).
SERVICING AND MAINTENANCE
228