Jeep Jeep Wrangler User manual

Jeep Wrangler
Quick guide to Repairs

Jeep Wrangler
Summary
Summary
1. Vehicle technical specifications
2. Electrical system
2.1 Engine compartment fuse box
2.2 Supplementary fuse box
2.3 Battery system
3. Emergency procedures
3.1 Emergency starting
4. Flat battery operations
4.1 Manual shift from P (PARK) position
5. Towing/lifting the vehicle
5.1 Towing the vehicle
5.2 Vehicle jacking points
6. Technical specifications
6.1 Tyre pressure (bar)
6.2 Liquids

Jeep Wrangler
Vehicle technical specifications
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Chassis number
The Vehicle Identification Number (VIN) is in the front left corner of
the A pillar and can be seen from outside the vehicle through the
windscreen.
The number also appears on the underbody, on the right side of the
rail near the centre of the vehicle. The VIN is also stamped on the
right or left side of the engine block.
NOTE:
Removing or modifying the VIN number is illegal.
1. Vehicle technical specifications
Chassis number

Jeep Wrangler
Electrical system
2.1 Engine compartment fuse box
The current distribution unit is located in the engine compartment,
next to the battery.
This module contains cartridge fuses, mini fuses and relays. A label
is located on the top cover of the box indicating the size, function,
position for each fuse/relay subject to maintenance.
2. Electrical system
Position Cartridge fuse Micro fuse Description
F01 - - Spare
F02 40 A green - Starter motor
F03 - 5 A light brown Intelligent Battery Sensor (IBS)
F04 - 20 A yellow MTR/FPCM fuel pump
F05 - 5 A light brown Safety Gateway
F06 - - Spare
F07 - 15 A blue Low Temperature Radiator (LTR) Coolant Pump – if provided
F08 - 15 A blue TCM-8HP CYGNUS Transmission Control Module
F09 - - Spare
F10 - 15 A blue Key Ignition (KIN) / Radio Frequency Hub (RF HUB) / Electronic Steering Lock (ESL)
F11 - 10 A red UCI Port (USB and AUX)
F12 - 25 A transparent HI-FI Amplifier
F13 - - Spare
F14 - - Spare
F15 - 15 A blue Instrument Panel Cluster (IPC) / Heavy Duty Electrical Switch Unit (HEAVY DUTY ELECTRICAL SWITCH
UNIT)
F16 - - Spare
F17 - - Spare
F18 - 10 A red Air-Conditioning Clutch (AC CLUTCH)
F19 - - Spare
F20 30 A pink - Body Module (CBC) INTERIOR LIGHTS 1

Jeep Wrangler
Electrical system
F21 - 20 A yellow REAR WINDOW WIPER
F22 - 10 A red Engine Control Module (ECM) / Powertrain Control Module (PCM) / MGU (Motor Generator Unit)
ACTIVATION / Power Unit (PPU) ACTIVATION
F23 - 10 A red Powertrain Control Module (PCM) / Engine Control Module (ECM)
F24 - - Spare
F25 - 10 A red Shift By Wire Module (MOD_SBW)
F26 40 A green - Body Control Module (CBC) EXTERIOR LIGHTS 2 N. 1
F27 30 A pink - Windscreen Wipers
F28 40 A green - Body Control Module (CBC) ELECTRICALLY CONTROLLED LOCKS 3
F29 40 A green - Body Control Module (CBC) EXTERIOR LIGHTS 4 N. 2
F30 - - Spare
F31 - 10 A red DIAGNOSTIC PORT
F32 - 10 A red Heating, Ventilation, Air Conditioning Module (MOD CTRL HVAC) / Steering Column Lock (SCL) / Occupant
Classification Module (OCM) / Driver Presence Detection Module (DPDM)
F33 - 10 A red ParkTronics System (PTS) / Infrared Camera Module (IRCM) / Airbag Deactivation Warning Lights (AIRBAG
DEACTIVATION WARNING LIGHTS)
F34 - 10 A red Electronic Stability Program (ESC) ACTIVATION / Electro-Hydraulic Power Steering (EHPS) / Smart Bar
Control Module (SBCM)
F35 30 A pink - BRAKE VACUUM PUMP – if provided
F36 30 A pink - TRAILER TOWING MODULE – if provided
F37 30 A pink - 7W TRAILER TOWING CONNECTOR – if provided
F38 20 A blue - Engine control module (ECM)
F39 - - Spare
F40 - 15 A blue Transmission Control Module (DTCM) / Axle Lock (AXLE LOCK) FT_RR
F41 - 15 A blue Instrument Cluster ACTIVATION (IC) / Safety Gateway (SGW)
F42 - 10 A red Powertrain Relay Control Power Unit (electric start/stop) / Spare (BSG, Belt Starter
Generator) – if provided
F43 - 20 A yellow POWER SOCKET (CHARGING) – BAT.
F44 - 10 A red Infrared Camera HEATERS (IR CAMERA)
F45 - 20 A yellow POWER SOCKET (CHARGING) IGNITION*
F46 - 10 A red AUTO HEADLIGHT ADJUSTMENT MODULE / ADJUSTMENT MOTOR / HEADLIGHT SWITCH
F47 - - Spare
F48 - - Spare
F49 - 10 A red Occupant Restraint Control Unit (ORC)
F50 - 10 A red HEAVY DUTY IGN. – if provided
F51 - 10 A red Digital TV (DSRC) / USB / Rear-View Mirror (ISRVM) / Compass Module (CSGM)
F52 - 20 A yellow CIGARETTE LIGHTER
F53 - - Spare
F54 - - Spare
F55 - - Spare
F56 - 10 A red INTERNAL TEMPERATURE SENSOR
F57 - 20 A yellow Front Heated Driver Seat
F58 - 20 A yellow Front Heated Passenger Seat
F59 - - Spare
F60 - 15 A blue Comfort Steering Wheel Module (CSWM) (HEATED STEERING WHEEL)
F61 - 10 A red Left Blind Spot Sensor (LBSS) / Right Blind Spot Sensor (RBSS)
F62 - - Spare
F63 - 10 A red Occupant Restraint Control Unit (ORC)
F64 - - Spare
F65 - - Spare
F66 40 A green - FRONT HVAC FAN MOTOR
F67 - - Spare
F68 - - Spare
F69 - 5 A light brown BSG (Belt Starter Generator) MGU (Motor Generator Unit) – if provided
F70 - 25 A transparent IGNITION COIL / INJECTION (PETROL) / SPARE PLUG PRE-HEATING MODULE (DIESEL)
Position Cartridge fuse Micro fuse Description

Jeep Wrangler
Electrical system
F71 - - Spare
F72 - 10 A red HEAVY DUTY IGN. UNIT – if provided
F73 20 A blue - ELECTRICALLY OPERATED LH TOP
F74 20 A blue - ELECTRICALLY OPERATED RH TOP
F75 - 10 A red Power Unit – Battery Pack Control Module and Auxiliary Power Module
(PPUBPCM and APM) – BSG (Belt Starter Generator) – if provided
F76 - 20 A yellow ECM (PETROL) / PCM (DIESEL)
F77 - 10 A red HEATED MIRRORS
F78 - 10 A red COMPASS / ANTI-INTRUSION / SIREN / ANTI-INTRUSION SENSORS
F79 - 20 A yellow SMART BAR CONTROL MODULE
F80 - 15 A blue Powertrain Control Module (PCM)
F81 30 A pink - HEATED REAR WINDOW (EBL)
F82 30 A pink - FUEL HEATING – if provided
F83 60 A yellow - GLOW PLUG – if provided
F84 30 A pink - UREA HEATING MODULE – if provided
F85 - 10 A red PM SENSOR – if provided
F86 30 A pink - BRAKE VACUUM PUMP 2 – if provided
F87 - 10 A red DELIVERY/BLEEDING PUMP – if provided
F88 20 A blue - NOx SENSOR 1/n. 2 – if provided
F89 - 10 A red Steering Column Control Module (SCCM) / Cruise Control (CRUISE CTL) / Digital TV (DTV)
F90 20 A blue - TRAILER TOWING TAIL LIGHTS – if provided
F91 - 20 A yellow HORN
F92 40 A green - HEAVY DUTY IGN. 2 – if provided
F93 40 A green - HEAVY DUTY IGN. 1 – if provided
F94 - 10 A red Tyre Pressure Monitoring (TPM) / RF Hub System (CORAX)
F95 - - Spare
F96 - 10 A red ELECTRICALLY ADJUSTABLE MIRROR MODULE
F97 - 20 A yellow RADIO / TBM
F98 - 10 A red HEAVY DUTY / OFF-ROAD ELECTRICAL SWITCH UNIT
F99 - - Spare
F100 30 A pink - ESC-ECU AND VALVES
F101 30 A pink - Transmission Control Module (DTCM)
F102 - 15 A blue DOUBLE USB PORT
F103 - 15 A blue HEAVY DUTY IGN. 3 – if provided
F104 - 15 A blue PPU COOLING PUMP – if provided
F105 - 10 A red Integrated Central Column (ICS) / Heating, Ventilation, Air Conditioning (HVAC)
F106 40 A green - Electronic Cruise Control (ESC) – PUMP MOTOR
F107 - 20 A yellow BRAKE LIGHTS / LH DIRECTION INDICATOR TRAILER TOWING – if provided
F108 - 15 A blue HEAVY DUTY IGN. 4 – if provided
F109 - 20 A yellow BRAKE LIGHTS / RH DIRECTION INDICATOR TRAILER TOWING – if provided
F110 30 A pink - POWER INVERTER
F111 20 A blue - REVERSE TRAILER TOWING – if provided
Position Cartridge fuse Micro fuse Description

Jeep Wrangler
Electrical system
2.2 Supplementary fuse box
A second relay and fuse box is located on the left side of the engine
compartment..
Position Cartridge fuse Description
F1 50A Supplementary heater PTC 1
F2 50A Supplementary heater PTC 2
F3 50A Supplementary heater PTC 3
1. Supplementary fusebox

Jeep Wrangler
Electrical system
2.3 Battery system
The vehicle is equipped with two 12V batteries.
The auxiliary battery supports the operation of systems and control
units during the engine Stop and Start phases..
Component code Name
1 Smart battery sensor
2 Main battery
3 Engine compartment fuse box
4 Relay unit
5 Body Computer
6 Auxiliary battery

Jeep Wrangler
Electrical system
To disconnect the batteries, undo the nut (2) and insulate the
negative cable of the auxiliary battery. Undo the nut (3) and isolate
the battery negative terminal.
1 - Terminal on main battery negative pole
2 - Auxiliary battery negative cable fixing nut
3 - Main battery negative cable fixing nut
4 - Intelligent battery sensor

Jeep Wrangler
Emergency procedures
3.1 Emergency starting
If the battery is flat, a jump starting can be performed using the
battery and the cables of another car, or using a portable auxiliary
battery. Jump starting may be dangerous if carried out incorrectly:
carefully follow the procedures described in this chapter.
WARNING:
Never bump start the engine by pushing, towing or coasting
downhill.
The battery is located in the rear part of the engine compartment,
behind the power distribution module.
NOTE:
The positive terminal of the battery is covered by a protective cap.
Lift the cover to access the terminal.
3. Emergency procedures
Positive battery terminal

Jeep Wrangler
Emergency procedures
NOTE:
Do not use a quick charger to start the engine, as this may damage
the electronic systems vehicle, especially the ignition and engine
power control units.
- Apply the parking brake, put the automatic transmission in P
(park) or N (neutral) or the manual transmission in N (neutral),
when turn the ignition device to the OFF position.
- Turn off the heater, the radio and all unnecessary electrical
devices.
- If another vehicle is ready for emergency starting, park the
vehicle within the reach of the leads to be used for starting,
apply the parking brake and make sure that the ignition device
is in the OFF position.
- Connect one end of the cable used for positive (+) to the
positive terminal (+) of the vehicle with flat battery.
- Connect the other end of the lead used for positive (+) to the
positive terminal (+) of the auxiliary battery.
- Connect one end of the lead used for negative (-) to the
negative terminal (-) of the auxiliary battery.
- Connect the other end of the lead used for negative to an
engine earth (the visible metal part of the engine of the vehicle
with flat battery) far from the battery and the fuel injection
system.
IMPORTANT:
Do not connect the lead to the negative terminal (-) of the flat
battery. The following spark could lead to battery explosion and
cause serious harm.
Only use the specific earth point; do not use any other exposed
metallic part.
- Start the engine of the vehicle with an auxiliary battery, let it run
for some minutes at idle and then start the engine of the vehicle
with flat battery.
- Once the engine is started, remove the leads used for jumping
in the reverse sequence:
- Disconnect the end of the lead used for negative (-) from the
engine earth of the vehicle with flat battery.
- Disconnect the other end of the negative (-) lead used from the
negative terminal (-) of the auxiliary battery.

Jeep Wrangler
Emergency procedures
- Disconnect the positive end of the lead (+) to the positive
terminal (+) of the auxiliary battery.
- Disconnect the opposite end of the positive lead (+) from the
positive terminal (+) of the vehicle with flat battery.
- Refit the protective cover from the remote positive (+) terminal
of the vehicle with the flat battery.

Jeep Wrangler
Flat battery operations
4.1 Manual shift from P (PARK) position
Manually releasing from the park position is needed to allow
pushing or towing the vehicle if the gear lever cannot be shifted from
the P (park) position (e.g. because the battery is flat).
Follow the procedure below to manually disengage the parking
position:
- Fully engage the parking brake.
- Remove the parking brake manual release cover, located
above the gear selector, to access the released position
stabilisation strap.
- Use a small screwdriver or similar and search for the
stabilisation strap through the opening in the bottom of the
console.
4. Flat battery operations
Parking brake manual release cover

Jeep Wrangler
Flat battery operations
- Keep the brake pedal fully pressed.
- Pull the strap upwards and leftwards until the release lever
locks in vertical position. The transmission is now no longer set
on P (park) and the vehicle can be moved. Disengage the
parking brake only when the vehicle is firmly connected to a
towing vehicle.
For resetting the park position manual lever release position:
- Pull the stabilisation strap upwards, releasing it from the
"locked" position.
- Lower the parking brake manual release lever rightwards to its
original position.
- Put the stabilisation strap back in the bottom of the console and
refit the cover.
Stabilisation trap

Jeep Wrangler
Towing/lifting the vehicle
5.1 Towing the vehicle
5.1.1 Warnings and precautions
WARNING:
Keep the towing devices from coming into contact with the fuel tank
or fuel lines, as this may result in fuel leaks. Do not lift or tow the
vehicle from the front or rear bumpers or from the bumper shock
absorbers. Do not go under a lifted vehicle unless it is adequately
supported by appropriate devices. Do not allow passengers to travel
on a towed vehicle. Use a safety chain which is independent from
the towing system. Failure to follow these instructions could result
in injury or even death.
IMPORTANT:
When attaching the towing device to the vehicle, take care not to
damage the brake lines, the exhaust system, the shock absorbers,
the anti-roll bars or any other special parts under the frame. Do not
attach the towing device to the front or rear suspension
components. Do not attach the vehicle to the towing device using
the suspension or steering linkages. Before starting towing
operations, remove or secure any loose or protruding parts from the
damaged vehicle. Consult the local and national legal regulations
before towing the vehicle. The weight of the towed vehicle must not
be applied to the lower shields, air conveyors or spoilers.
IMPORTANT:
Do not tow any vehicle equipped with an automatic transmission
with the wheels on the ground, as this could damage the engine/
transmission unit. Make sure that all drive wheels are raised off the
ground if these vehicles need to be towed.
5. Towing/lifting the vehicle

Jeep Wrangler
Towing/lifting the vehicle
WARNING:
If the vehicle to be towed must be steered, the ignition device must
be in the ACC (Accessories) or RUN position, not in the OFF
position.
IMPORTANT:
Failure to respect the indications above when towing the vehicle
may cause serious damage to the transmission. Damage caused by
inappropriate towing methods is not covered by the limited warranty
of the vehicle.
5.1.2 Recommended towing equipment
Use of a flatbed tow truck or one with wheel lift is recommended in
order to avoid damaging shields and air conveyors. When a tow
truck with wheel lift is used, make sure that the non-lifted end of the
broken-down vehicle is at least 100 mm from the ground. If this
ground clearance cannot be achieved, use a tow truck. If a flatbed
tow truck is used, the ramp angle must not exceed 15 degrees.
1 - Wheel lift
2 - Flatbed

Jeep Wrangler
Towing/lifting the vehicle
To define the towing methods, comply with the following table,
according to the model to be towed.
5.1.3 Towing a vehicle without key
Particular attention is needed when towing the vehicle with the
ignition device in OFF mode. The only towing method allowed
without the key is on a tow truck flatbed. Use appropriate towing
equipment to prevent damage to the vehicle.
5.1.4 All-wheel drive models
The manufacturer recommends towing the vehicle with the four
wheels LIFTED from the ground. It is possible to tow the vehicle on
the flatbed of a tow truck, or with one end lifted and the other on a
towing trailer.
If a flatbed tow truck is not available and the transfer case is not
working, it is possible to tow the vehicle forwards with ALL the
wheels on the ground, IF the transfer case is in N (neutral) position
and the transmission is in the P position (automatic transmission) or
if a gear is engaged (NOT in position N (neutral) for manual
transmission). For more details, see "Towing for tourism" in "Starting
and operating".
WARNING:
• Avoid lifting the front or rear wheels (if the other wheels are
resting on the ground). Lifting the front (or rear) wheels only
while towing might damage the transmission or the transfer
case.
• If a vehicle is towed without complying with the above
requirements, the transmission and/or the transfer case may be
seriously damaged.
Towing condition Wheels raised from the ground 4WD MODELS
Towing flat NONE
• Automatic transmission in P(Park) position
• Manual transmission engaged (NON in N neutral
position)
• Transfer case in N(Neutral) position
• Battery negative terminal disconnected.
• Towing forwards
Raised towing or on tow truck Front NOT ALLOWED
Rear NOT ALLOWED
Vehicle on tow truck flatbed ALL BEST METHOD

Jeep Wrangler
Towing/lifting the vehicle
5.1.5 Using the towing attachment
The vehicle is equipped with a towing attachment which can be
used to move it if it breaks down.
The towing attachments are fitted under the front and rear bumper.
IMPORTANT:
Stay clear of the towing and towed vehicles, if connected using the
towing attachment.
• Do not use a chain with a towing attachment. The chains could
brake causing serious injury or fatal accidents.
• Do not use a towing chain with a towing attachment.
• The towing belts may break or disconnect causing serious or
even fatal injury.
• Failure to respect correct use of the towing attachment could
cause the breakage of components and consequence serious
or even fatal injury.
• The power steering and braking systems will not work while
towing the vehicle. It will therefore be necessary to apply more
force to the brake pedal and steering wheel. Do not use flexible
ropes when towing, and avoid jerks. Do not start the engine
while towing the vehicle. Before tightening the ring, clean the
threaded housing thoroughly. Make sure the ring is fully
screwed into place before towing the vehicle.
IMPORTANT!
• The towing attachment must be used for on-road emergencies
only. Use a suitable device conforming with the highway code
(rigid bar) to manoeuvre the vehicle to prepare for transport on
a tow truck.
• The towing attachment must not be used to move the vehicle
on the road or in presence of obstacles.
• Do not use the towing attachments to couple to a tow truck or
for towing on the motorway.
• Do not use the towing attachment to free a bogged-down
vehicle.
NOTE
Check that the towing attachment is correctly fitted.
Do not use the towing attachment to tow the vehicle on a flatbed tow
truck.

Jeep Wrangler
Towing/lifting the vehicle
5.2 Vehicle jacking points
WARNING:
The points provided for lifting and jacking are for the complete
vehicle. When the engine or rear suspension is removed from the
vehicle, the centre of gravity moves, making certain lifting conditions
unstable. In such cases, support the vehicle properly or secure it to
the lifting device. Failure to follow these instructions could result in
injury or even death.
IMPORTANT:
Do not place the lifting device on any suspension component, front
or rear suspension crossmember included. Do not lift the vehicle
from the front and rear bumper, the lower radiator crossmember or
the front engine mounting.
Do not try to completely lift the vehicle on one side by only placing
a floor jack between the front and rear wheels. This may damage
the vehicle permanently.
1 - Lifting in contact with chassis (single pillar)
1 - Chassis lifting (double lifting)
1 - Lifting off edge (double lifting)
2 - Alternative jacking points
2 - Floor jack
3 - Transmission on lift