cooling DODGE HORNET 2023 User Guide

234SERVICING AND MAINTENANCE
This vehicle has not been designed for use with
propylene glycol-based engine coolant. Use of
propylene glycol-based engine coolant is not recom -
mended.
 Some vehicles require special tools to add coolant
properly. Failure to fill these systems properly could
lead to severe internal engine damage. If any coolant is
needed to be added to the system please contact an
authorized dealer.
Adding Coolant

Your vehicle has been built with an improved engine coolant
(OAT coolant conforming to MS.90032) that allows extended
maintenance intervals. This engine coolant (antifreeze) can
be used up to 10 years or 150,000 miles (240,000 km)
before replacement. To prevent reducing this extended
maintenance period, it is important to use the same engine
coolant (OAT coolant conforming to MS.90032) throughout
the life of your vehicle.

Please review these recommendations for using OAT
engine coolant that meets the requirements of the
manufacturer Material Standard MS.90032. When adding
engine coolant:
We recommend using Mopar® Antifreeze/Coolant
10 Year/150,000 Mile (240,000 km) Formula OAT
that meets the requirements of the manufacturer
Material Standard MS.90032.
 Mix a minimum solution of 50% OAT engine coolant
that meets the requirements of the manufacturer
Material Standard MS.90032 and distilled water. Use higher concentrations (not to exceed 70%) if
temperatures below −34°F (−37°C) are anticipated.
Please contact an authorized dealer for assistance.
 Use only high purity water such as distilled or deionized
water when mixing the water/engine coolant solution.
The use of lower quality water will reduce the amount
of corrosion protection in the engine cooling system.
NOTE:
It is the owner's responsibility to maintain the proper
level of protection against freezing according to the
temperatures occurring in the area where the vehicle is
operated.
 Some vehicles require special tools to add coolant
properly. Failure to fill these systems properly could
lead to severe internal engine damage. If any coolant is
needed to be added to the system, please contact an
authorized dealer.
 Mixing engine coolant types is not recommended and
can result in cooling system damage. If HOAT and OAT
coolant are mixed in an emergency, have an authorized
dealer drain, flush, and refill with OAT coolant
(conforming to MS.90032) as soon as possible.
Cooling System Pressure Cap
The cap must be fully tightened to prevent loss of engine
coolant (antifreeze), and to ensure that engine coolant will
return to the radiator from the coolant expansion bottle/
recovery tank (if equipped). The cap should be inspected and cleaned if there is any
accumulation of foreign material on the sealing surfaces.
Disposal Of Used Coolant
Used ethylene glycol-based coolant (antifreeze) is a
regulated substance requiring proper disposal. Check with
your local authorities to determine the disposal rules for
your community. To prevent ingestion by animals or
children, do not store ethylene glycol-based coolant in
open containers or allow it to remain in puddles on the
ground. If ingested by a child or pet, seek emergency
assistance immediately. Clean up any ground spills
immediately.
WARNING!

Do not open a hot engine cooling system. Never add
engine coolant (antifreeze) when the engine is over -
heated. Do not loosen or remove the cap to cool an
overheated engine. Heat causes pressure to build up
in the cooling system. To prevent scalding or injury,
do not remove the pressure cap while the system is
hot or under pressure.
 Do not use a pressure cap other than the one speci -
fied for your vehicle. Personal injury or engine
damage may result.

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SERVICING AND MAINTENANCE235
Coolant Level
The coolant expansion bottle provides a quick visual
method for determining that the coolant level is adequate.
With the engine off and cold, the level of the engine
coolant (antifreeze) in the bottle should be between the
“MIN” and “MAX” marks.
As long as the engine operating temperature is
satisfactory, the coolant bottle need only be checked once
a month.
When additional engine coolant is needed to maintain the
proper level, it should be added to the coolant bottle.
Do not overfill.
Engine Coolant Level — 2.0L
With the engine OFF and cold, the level of the engine
coolant should be within the OK range between the
ADD and FULL range on the dipstick.

1. Remove the cap with level dipstick from the engine
coolant bottle.

2. Clean off the coolant from the dipstick.
3. Rest the cap on the opening of the coolant bottle without tightening the cap.
4. Remove the cap with dipstick and check the coolant level on the dipstick.
The radiator normally remains completely full, so there is
no need to remove the radiator/coolant pressure cap
unless checking for engine coolant freeze point or
replacing coolant. Advise your service attendant of this. As
long as the engine operating temperature is satisfactory,
the coolant bottle need only be checked once a month.
When additional engine coolant is needed to maintain the
proper level, only OAT coolant that meets the
requirements of the manufacturer Material Standard
MS.90032 should be added to the coolant bottle.
Do not overfill.
Cooling System Notes
NOTE:When the vehicle is stopped after a few miles/kilometers
of operation, you may observe vapor coming from the front
of the engine compartment. This is normally a result of
moisture from rain, snow, or high humidity accumulating on the radiator and being vaporized when the thermostat
opens, allowing hot engine coolant (antifreeze) to enter
the radiator.
If an examination of your engine compartment shows no
evidence of radiator or hose leaks, the vehicle may be
safely driven. The vapor will soon dissipate.

Do not overfill the coolant expansion bottle.
 Check the coolant freeze point in the radiator and in
the coolant expansion bottle. If engine coolant needs
to be added, the contents of the coolant expansion
bottle must also be protected against freezing.
 If frequent engine coolant additions are required, the
cooling system should be pressure tested for leaks.
 Maintain engine coolant concentration at a minimum
of 50% OAT coolant (conforming to MS.90032) and
distilled water for proper corrosion protection of your
engine which contains aluminum components.
 Make sure that the coolant expansion bottle overflow
hoses are not kinked or obstructed.
 Keep the front of the radiator clean. If your vehicle is
equipped with air conditioning, keep the front of the
condenser clean.
 Do not change the thermostat for Summer or Winter
operation. If replacement is ever necessary, install
ONLY the correct type thermostat. Other designs may
result in unsatisfactory engine cooling performance,
poor gas mileage, and increased emissions.
WARNING!
Do not open a hot engine cooling system. Never add
engine coolant (antifreeze) when the engine is over -
heated. Do not loosen or remove the cap to cool an
overheated engine. Heat causes pressure to build up
in the cooling system. To prevent scalding or injury,
do not remove the pressure cap while the system is
hot or under pressure.
 Do not use a pressure cap other than the one speci -
fied for your vehicle. Personal injury or engine
damage may result.
8

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268TECHNICAL SPECIFICATIONS
FLUID CAPACITIES
US Metric
Fuel (Approximate)
All Engines 13.5 gal51 L
Engine Oil With Filter
2.0L Engine 5 qt4.73 L
Cooling System*
2.0L Engine 7 qt6.6 L
2.0L Engine Low Temp 2.3 qt2.17 L
* Includes heater and coolant recovery bottle filled to MAX level.

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278
Brake System ...................................................... 236, 265
Anti-Lock (ABS)........................................................ 265 Fluid Check..................................................... 236
, 269
Master Cylinder ....................................................... 236
Parking ....................................................................... 82
Warning Light ............................................................. 71
Brake/Transmission Interlock........................................86
Brightness, Interior Lights ....................................... 42
, 43
Bulb Replacement ....................................................... 246
Bulbs, Light................................................................... 201
CCamera, Rear ............................................................... 116
Capacities, Fuel............................................................ 268
Caps, Filler Fuel .......................................................................... 119
Oil (Engine) .............................................................. 226
Radiator (Coolant Pressure)................................... 234
Car Washes .................................................................. 263
Carbon Monoxide Warning .......................................... 202
Cargo Tie-Downs ............................................................. 64
Cellular Phone .............................................................. 153
Certification Label ........................................................ 120
Chains, Tire................................................................... 259
Change Oil Indicator ....................................................... 68
Changing A Flat Tire ..................................................... 206
Chart, Tire Sizing .......................................................... 247
Check Engine Light (Malfunction Indicator Light) .........79
Checking Your Vehicle For Safety ............................... 199
Checks, Safety.............................................................. 199
Child Restraint.............................................................. 188 Child Restraints
Booster Seats .......................................................... 191
Child Seat Installation ............................................. 198How To Stow An unused ALR Seat Belt .................195Infant And Child Restraints ..................................... 190
Lower Anchors And Tethers For Children............... 192
Older Children And Child Restraints....................... 190
Seating Positions ..................................................... 191
Child Safety Locks .......................................................... 25
Clean Air Gasoline ........................................................ 266
Cleaning Wheels .....................................................................262
Windshield Wiper Blades ........................................ 230
Climate Control ............................................................... 46 Automatic ................................................................... 46
Cold Weather Operation ................................................. 81
Compact Spare Tire ...................................................... 258
Connector Universal Consumer Interface (UCI) ......................... 51
Console............................................................................ 51 Floor ........................................................................... 51
Contract, Service .......................................................... 272
Cooling Pressure Cap (Radiator Cap) ..........................234
Cooling System ............................................................. 233 Adding Coolant (Antifreeze) ....................................234
Coolant Level ................................................. 233
, 235
Cooling Capacity ...................................................... 268
Disposal Of Used Coolant ....................................... 234 Drain, Flush, And Refill............................................233
Inspection ................................................................ 235 Points To Remember .............................................. 235
Pressure Cap ........................................................... 234
Radiator Cap............................................................ 234
Selection Of Coolant (Antifreeze) ........ 233
, 268, 269
Cornering Lights ............................................................. 41
Corrosion Protection .................................................... 262
Cruise Light ..................................................................... 77 Customer Assistance ................................................... 270
Cybersecurity ................................................................ 129
DDaytime Running Lights ................................................. 40Defroster, Windshield .................................................. 200
Dipsticks Oil (Engine) .............................................................. 227
Disabled Vehicle Towing .............................................. 220
Disposal Antifreeze (Engine Coolant) .................................... 234
Door Ajar .................................................................. 72
, 73
Door Ajar Light ......................................................... 72, 73
Door Locks ...................................................................... 22 Dead Lock Device ..................................................... 25
Passive Entry ............................................................. 23
Driving Through Flowing, Rising, Or Shallow Standing Water ............................... 128

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279
E
Electric Brake Control System..................................... 155 Anti-Lock Brake System ......................................... 154
Traction Control System ................................ 157
, 158
Electric Parking Brake ....................................................82
Electrical Power Outlets..................................................52 Electronic Stability Control (ESC) ................................ 156
Electronic Throttle Control Warning Light...................... 72Emergency Braking ...................................................... 164
Emergency Gas Can Refueling .................................... 217
Emergency, In Case Of Hazard Warning Flasher ......................................... 203
Jacking..................................................................... 206
Jump Starting .......................................................... 215
Towing ..................................................................... 220
Emission Control System Maintenance.........................79
Engine ........................................................................... 226 Air Cleaner ............................................................... 229Break-In Recommendations ..................................... 82
Checking Oil Level .................................................. 227Compartment .......................................................... 226
Compartment Identification ................................... 226Coolant (Antifreeze) ................................................ 269
Cooling..................................................................... 233
Exhaust Gas Caution .............................................. 202
Fails To Start .............................................................. 81
Flooded, Starting ....................................................... 81
Fuel Requirements ................................................. 266 Jump Starting .......................................................... 215
Oil ...........................................................228
, 268, 269
Oil Filler Cap ............................................................ 226 Oil Filter ....................................................................228
Oil Selection ................................................... 228
, 268
Oil Synthetic ............................................................. 228
Overheating ............................................................. 218
Starting....................................................................... 80
Enhanced Accident Response Feature ............. 184
, 222
Ethanol .......................................................................... 266
Exhaust Gas Cautions ..................................................202
Exhaust System .................................................. 202
, 232
Exterior Lighting .............................................................. 40
Exterior Lights ........................................................40
, 201
FFilters Air Cleaner ............................................................... 229
Air Conditioning ................................................50
, 230
Engine Oil ................................................................. 228
Engine Oil Disposal..................................................228
Flashers Hazard Warning ....................................................... 203
Turn Signals ...............................................42
, 77, 201
Flash-To-Pass .................................................................. 41
Flat Tire Changing ............................................... 246
, 258
Flat Tire Stowage ................................................ 246, 258
Flooded Engine Starting ................................................. 81
Floor Console .................................................................. 51
Fluid Capacities ............................................................268
Fluid Leaks ....................................................................201
Fluid Level Checks Brake ........................................................................ 236
Engine Oil ................................................................. 227 Fluid, Brake................................................................... 269
Fold-Flat Seats ................................................................ 28
Folding Rear Seats ......................................................... 28
Forward Collision Warning ........................................... 162
Freeing A Stuck Vehicle ............................................... 219
Fuel................................................................................ 266
Additives .................................................................. 267
Clean Air .................................................................. 266
Ethanol..................................................................... 266Filler Cap (Gas Cap) ................................................ 119Gasoline ................................................................... 266
Light ........................................................................... 75
Materials Added ...................................................... 267
Methanol ................................................................. 266
Octane Rating.................................................266
, 269
Specifications .......................................................... 269
Tank Capacity .......................................................... 268
Fuses ............................................................................. 237
GGarage Door Opener (HomeLink®)............................... 36
Gas Cap (Fuel Filler Cap) ............................................. 119
Gasoline, (Fuel) ............................................................ 266
Gasoline, Clean Air ....................................................... 266
Gasoline, Reformulated ............................................... 266
Gear Ranges ................................................................... 86
Gear Selector Override................................................. 218
Gear Shift Indicator ........................................................ 68 Glass Cleaning .............................................................. 264
Gross Axle Weight Rating ............................................. 121
Gross Vehicle Weight Rating ....................................... 121
GVWR ............................................................................ 120
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