2023 DODGE HORNET engine

236SERVICING AND MAINTENANCE
BRAKE SYSTEM
In order to ensure brake system performance, all brake
system components should be inspected periodically.
For the proper maintenance intervals
Úpage 224.
Brake Master Cylinder
The fluid in the master cylinder should be checked when
performing under hood services or immediately if the
Brake Warning Light is illuminated.
Be sure to clean the top of the master cylinder area before
removing the cap. If necessary, add fluid to bring the fluid
level up to the requirements described on the brake fluid
reservoir. With disc brakes, fluid level can be expected to
fall as the brake pads wear. Brake fluid level should be
checked when pads are replaced. However, low fluid level
may be caused by a leak and a checkup may be needed.
Use only the manufacturer recommended brake fluid
Úpage 269.
AUTOMATIC TRANSMISSION —
I
F EQUIPPED
Special Additives
It is strongly recommended against using any special
additives in the transmission. Automatic Transmission
Fluid (ATF) is an engineered product and its performance
may be impaired by supplemental additives. Therefore, do
not add any fluid additives to the transmission. Avoid
using transmission sealers as they may adversely affect
seals.
Fluid Level Check
The fluid level is preset at the factory and does not require
adjustment under normal operating conditions. Routine
fluid level checks are not required; therefore the
transmission has no dipstick. An authorized dealer can
check your transmission fluid level using special service
tools. If you notice fluid leakage or transmission
malfunction, visit an authorized dealer immediately to
have the transmission fluid level checked. Operating the
vehicle with an improper fluid level can cause severe
transmission damage.
WARNING!
Riding the brakes can lead to brake failure and possibly
a collision. Driving with your foot resting or riding on the
brake pedal can result in abnormally high brake
temperatures, excessive lining wear, and possible brake
damage. You would not have your full braking capacity
in an emergency.
WARNING!
 Use only the manufacturer recommended brake fluid Úpage 269. Using the wrong type of brake fluid can
severely damage your brake system and/or impair its
performance. The proper type of brake fluid for your
vehicle is also identified on the original factory
installed hydraulic master cylinder reservoir.
 To avoid contamination from foreign matter or
moisture, use only new brake fluid or fluid that has
been in a tightly closed container. Keep the master
cylinder reservoir cap secured at all times. Brake
fluid in an open container absorbs moisture from the
air resulting in a lower boiling point. This may cause
it to boil unexpectedly during hard or prolonged
braking, resulting in sudden brake failure.
This could result in a collision.
 Overfilling the brake fluid reservoir can result in
spilling brake fluid on hot engine parts, causing the
brake fluid to catch fire. Brake fluid can also damage
painted and vinyl surfaces, care should be taken to
avoid its contact with these surfaces.
 Do not allow petroleum-based fluid to contaminate
the brake fluid. Brake seal components could be
damaged, causing partial or complete brake failure.
This could result in a collision.
CAUTION!
Do not use chemical flushes in your transmission as the
chemicals can damage your transmission components.
Such damage is not covered by the New Vehicle Limited
Warranty.

23_GG_OM_EN_USC_t.book Page 236

SERVICING AND MAINTENANCE237
Fluid And Filter Changes
Under normal operating conditions, the fluid installed at
the factory will provide satisfactory lubrication for the life
of the vehicle.
Routine fluid and filter changes are not required. However,
change the fluid and filter if the fluid becomes
contaminated (with water, etc.), or if the transmission is
disassembled for any reason.
Selection Of Lubricant
It is important to use the proper transmission fluid to
ensure optimum transmission performance and life.
Use only the manufacturer specified transmission fluid
Úpage 269. It is important to maintain the transmission
fluid at the correct level using the recommended fluid.
NOTE:No chemical flushes should be used in any transmission;
only the approved lubricant should be used.
FUSES
General Information
The fuses protect electrical systems against excessive
current.
When a device does not work, you must check the fuse
element inside the blade fuse for a break/melt.
Also, please be aware that using power outlets for
extended periods of time with the engine off may result in
vehicle battery discharge.

Blade Fuses

CAUTION!
If a transmission fluid leak occurs, visit an authorized
dealer immediately. Severe transmission damage may
occur. An authorized dealer has the proper tools to
adjust the fluid level accurately.
CAUTION!
Using a transmission fluid other than the manufacturer
recommended fluid may cause deterioration in
transmission shift quality and/or torque converter
shudder. For fluid specifications
Úpage 269.
WARNING!

When replacing a blown fuse, always use an appro -
priate replacement fuse with the same amp rating as
the original fuse. Never replace a fuse with another
fuse of higher amp rating. Never replace a blown
fuse with metal wires or any other material. Do not
place a fuse inside a circuit breaker cavity or vice
versa. Failure to use proper fuses may result in
serious personal injury, fire and/or property damage.
 Before replacing a fuse, make sure that the ignition
is off and that all the other services are switched off
and/or disengaged.
 If the replaced fuse blows again, contact an autho -
rized dealer.
 If a general protection fuse for safety systems
(air bag system, braking system), power unit systems
(engine system, transmission system) or steering
system blows, contact an authorized dealer.
1 — Fuse Element
2 — Blade Fuse with a good/functional fuse element
3 — Blade Fuse with a bad/not functional fuse element
(blown fuse)
8

23_GG_OM_EN_USC_t.book Page 237

238SERVICING AND MAINTENANCE
Power Distribution Center/Fuses And Relays
The Front Power Distribution Center is located in the engine compartment. This module contains fuses and relays. Fuse cavity locations are printed on the inside of the power distribution
center cover.
Underhood Power Distribution Location
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 system failure.

23_GG_OM_EN_USC_t.book Page 238

SERVICING AND MAINTENANCE239
The fuse box screw and cover must be removed to gain
access to the fuses.

Fuse Box Cover And Locking Screw Removal

For fuse box access, proceed as follows:

1. Turn the locking screw counterclockwise.

2. Slowly release the screw.
3. Remove the fuse box cover by sliding it upward.
4. Reverse the procedure to reinstall.
1 — Fuse Cover
2 — Locking Screw
CavityCartridge Fuse Maxi FuseMini FuseDescription
* If Equipped
F01 –70 Amp Tan –BCM1
F02 –70 Amp Tan –BCM2 / RDU
F03 20 Amp Blue ––BCM3
F04 40 Amp Green ––BCM Valves
F05 –40 Amp Orange –PTC 1
F06 –20 Amp Yellow –Front Wiper Motor
F07 –20 Amp Yellow –DTCM
F08 30 Amp Pink ––Power Supply F24 - F87 - Fxx
F09 ––7.5 Amp Brown ECM T09
F10 ––15 Amp BlueHorn
F11 ––5 Amp TanEngine Secondary Loads
8

23_GG_OM_EN_USC_t.book Page 239

240SERVICING AND MAINTENANCE
F14 ––7.5 Amp Brown LTR
F15 –40 Amp Orange –BSM Pump
F16 ––10 Amp RedECM / TCM / AGSM
F17 ––10 Amp RedEngine Primary Loads
F18 ––5 Amp TanIGNM
F19 ––7.5 Amp Brown A/C Compressor
F20 ––15 Amp BlueRear Cargo Outlet
F21 ––20 Amp Yellow Fuel Pump
F22 ––15 Amp BlueECM
F23 ––5 Amp TanUSB / Aux Outlet
F24 ––10 Amp RedDTCM
F30 ––5 Amp TanAWD DTCM
F81 –30 Amp Green –Brake Booster Vacuum Pump
F82 –––Spare
F83 40 Amp Green ––HVAC Fan
F84 ––7.5 Amp Brown Rad Fan Enable
F87 ––5 Amp TanAGSM
F88 ––7.5 Amp Brown Heated Mirrors & Washer Nozzle
F89 30 Amp Pink ––Rear Window Defrost
F90 ––5 Amp TanIntelligent Battery Sensor
Cavity Cartridge Fuse Maxi FuseMini FuseDescription
* If Equipped

23_GG_OM_EN_USC_t.book Page 240

SERVICING AND MAINTENANCE241
Relays
Cavity Maxi Fuse Mini FuseDescription
T02 ––Not Used
T03 –30 AmpHorn
T05 –30 AmpA/C Compressor
T06 –30 AmpRad Fan Enable
T07 50 Amp –Aux.1 / DTCM
T08 –30 AmpHVAC Fan
T09 –30 AmpEngine Main Relay
T10 ––Not Used
T14 –30 AmpRear Cargo Power Outlet
T17 –30 AmpRear Window Defrost/Heated Mirrors
T19 ––Not Used
T20 –30 AmpStarter Relay R1
T31 –30 AmpFuel Pump
T89 ––Not Used
T90 –30 AmpBrake Booster Vacuum Pump
8

23_GG_OM_EN_USC_t.book Page 241

265
TECHNICAL SPECIFICATIONS
VEHICLE IDENTIFICATION NUMBER (VIN)
The VIN is found on the left front corner of the windshield
and is visible from outside of the vehicle.

Vehicle Identification Number

NOTE:
It is illegal to remove or alter the VIN.
BRAKE SYSTEM
Your vehicle is equipped with power assisted brakes as
standard equipment. In the event power assist is lost for
any reason (for example, repeated brake applications with
the engine off), the brakes will still function. However, the
effort required to brake the vehicle will be much greater
than that required with the power system operating. If either of the two hydraulic systems lose normal
capability, the remaining system will still function with
some loss of overall braking effectiveness. This will be
evident by increased pedal travel during application and
greater pedal force required to slow or stop. In addition, if
the malfunction is caused by an internal leak, as the brake
fluid in the master cylinder drops, the Brake Warning Light
will illuminate.
WHEEL AND TIRE TORQUE SPECIFICATIONS
Proper lug nut/bolt torque is very important to ensure that
the wheel is properly mounted to the vehicle. Any time a
wheel has been removed and reinstalled on the vehicle,
the lug nuts/bolts should be torqued using a properly
calibrated torque wrench using a six-sided (hex) deep wall
socket.
TORQUE SPECIFICATIONS
**Use only authorized dealer recommended lug nuts/
bolts and clean or remove any dirt or oil before tightening.
Inspect the wheel mounting surface prior to mounting the
tire and remove any corrosion or loose particles.

Wheel Mounting Surface

WARNING!
Driving a vehicle with the Brake Warning Light on is
dangerous. A significant decrease in braking
performance or vehicle stability during braking may
occur. It will take you longer to stop the vehicle or will
make your vehicle harder to control. You could have a
collision. Have the vehicle checked immediately.
Lug Nut/Bolt
Torque
**Lug Nut/Bolt
SizeLug Nut/Bolt
Socket Size
88.5 ft-lb
(120 N·m) M12 x 1.25 17 mm
9

23_GG_OM_EN_USC_t.book Page 265

266TECHNICAL SPECIFICATIONS
First tighten the lug nuts/bolts in a star pattern until each
nut/bolt has been tightened to 14.7 ft-lb (20 N·m). Then
repeat the operation until each lug nut/bolt has been
tightened to 88.5 ft-lb (120 N·m). Ensure that the socket is
fully engaged on the lug nut/bolt (do not insert it halfway).

Torque Pattern

After 25 miles (40 km), check the lug nut/bolt torque to be
sure that all the lug nuts/bolts are properly tightened.
FUEL REQUIREMENTS
While operating on gasoline with the required octane
number, hearing a light knocking sound from the engine is
not a cause for concern. However, if the engine is
heard making a heavy knocking sound, see a dealer
immediately. Use of gasoline with a lower than
recommended octane number can cause engine failure
and may void or not be covered by the New Vehicle Limited
Warranty.
2.0L ENGINE
This engine is designed to meet all emissions
requirements, and provide satisfactory fuel
economy and performance, when using
high-quality unleaded regular gasoline
having an octane rating of 87, as specified by the
(R+M)/2 method. The use of 91 or higher octane premium
gasoline will allow these engines to operate to optimal
performance. This increase in performance is most
noticeable in hot weather or under heavy load conditions
such as while towing.
REFORMULATED GASOLINE
Many areas of the country require the use of
cleaner-burning gasoline referred to as “reformulated
gasoline”. Reformulated gasoline contains oxygenates
and are specifically blended to reduce vehicle emissions
and improve air quality. The use of reformulated gasoline is recommended.
Properly blended reformulated gasoline will provide
improved performance and durability of engine and fuel
system components.
GASOLINE/OXYGENATE BLENDS
Some fuel suppliers blend unleaded gasoline with
oxygenates such as ethanol.
Problems that result from using gasoline containing more
than 15% ethanol (E-15) or gasoline containing methanol
are not the responsibility of the manufacturer and may
void the New Vehicle Limited Warranty.
WARNING!
To avoid the risk of forcing the vehicle off the jack, do
not tighten the lug nuts/bolts fully until the vehicle has
been lowered. Failure to follow this warning may result
in personal injury.
CAUTION!
DO NOT use E-85, gasoline containing methanol, or
gasoline containing more than 15% ethanol (E-15).
Use of these blends may result in starting and
drivability problems, damage critical fuel system
components, cause emissions to exceed the applicable
standard, and/or cause the Malfunction Indicator Light
to illuminate. Please observe pump labels as they
should clearly communicate if a fuel contains greater
than 15% ethanol (E-15).

23_GG_OM_EN_USC_t.book Page 266