2023 ALFA ROMEO STELVIO engine overheat

SERVICING AND MAINTENANCE

212

(Continued)
EXHAUST SYSTEM
Adequate maintenance of the engine exhaust
system represents the best protection against
leaks of carbon monoxide into the passenger
compartment.
If an unusual noise from the exhaust or the
presence of smoke in the passenger
compartment is identified, or if the underbody or
rear section of the vehicle have been damaged,
have the entire exhaust system and adjoining
bodywork areas checked at an authorized dealer
to identify any components which are broken,
damaged, worn or have moved from their correct
fitting position.
Open welding or loose connections may permit
exhaust gas to enter the passenger
compartment.
Have the exhaust system checked every time the
vehicle is raised. Replace the components where
necessary (for these operations, contact an
authorized dealer).
In normal operating conditions, the catalytic
converter does not require maintenance. To
ensure that it operates correctly, and prevent it
from getting damaged, it is extremely important
that the engine operates perfectly.
To minimize the risk of damaging the catalytic
converter, proceed as follows:
Do not stop the engine or deactivate the
ignition with gear engaged and vehicle in
motion.
Do not attempt to start the engine by bump
starting.
Do not use the vehicle if irregular idling or
operating conditions are experienced.
COOLING SYSTEM
Coolant Check
Your vehicle has two cooling systems and both
need to be checked to ensure they are at proper
fill levels

Ú
page 204.
Check the engine coolant and intercooler coolant
level every oil change or before long trips.
If there are impurities in the engine coolant, the
system must be drained, flushed and refilled:
contact an authorized dealer.
Check the front part of the condenser for any
build-up of insects, leaves or other debris. Should
it be dirty, clean by spraying delicately with water.
Check the hoses of the engine/intercooler
cooling system to ensure that the rubber has not
deteriorated and that there are no cracks, tears,
cuts or obstructions in the expansion tank side
and radiator side connectors. Should there be
any doubt regarding leaks from the system (e.g. if
frequent top ups are required), have the seal
checked at an authorized dealer.
With the engine off and at normal operating
temperature, check that the cooling system
radiator cap is closed properly.
WARNING!
Exhaust gases can injure or kill. They contain
Carbon Monoxide (CO), which is colorless
and odorless. Breathing it can make you
unconscious and can eventually poison you.
A hot exhaust system can start a fire if you
park over materials that can burn. Such
materials might be grass or leaves coming
into contact with your exhaust system. Do not
park or operate your vehicle in areas where
your exhaust system can contact anything
that can burn.
WARNING!
You or others can be badly burned by hot
engine coolant (antifreeze) or steam from
your radiator. If you see or hear steam
coming from under the hood, do not open the
hood until the radiator has had time to cool.
Never open a cooling system pressure cap
when the radiator or coolant bottle is hot.
Keep hands, tools, clothing, and jewelry away
from the radiator cooling fan when the hood
is raised. The fan starts automatically and
may start at any time, whether the engine is
running or not.
When working near the radiator cooling fan,
disconnect the fan motor lead or turn the
ignition to the OFF position. The fan is
temperature controlled and can start at any
time the ignition is in the ON position.
WARNING!
Do not open hot engine cooling system.
Never add engine coolant (antifreeze) when
the engine is overheated. 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.
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213

(Continued)

NOTE:
Before removing the coolant reservoir cap, wait
for the system to cool down.
Topping Up / Draining / Flushing The Engine/
Intercooler Coolant
If the engine coolant (antifreeze) is dirty, have
cleaning and flushing carried out at an authorized
dealer.
For the correct servicing intervals

Ú
page 200.

NOTE:

For topping off, and proper coolant specifi-
cations
Ú
page 252.
Do not use pure water, alcohol-based coolants,
corrosions inhibitors or additional anti-rust
products because they may be incompatible
with the engine coolant and cause the clogging
of the radiator. The use of propylene
glycol-based coolant is also not recommended.
Use care when filling under hood fluids such as
engine oil, windshield washer fluid, antifreeze
etc. to minimize spillage onto top of engine.
Any excess fluid that is spilled onto the top of
the engine should be removed using
compressed air or absorbent cloth. Engine Cooling/Intercooler System Cap
To prevent loss of engine coolant, make sure that
the expansion tank cap is closed. If it is open,
screw it completely until you reach/hear the click.
Periodically check the cap and clean it from any
foreign bodies that may have deposited on the
external surface.
Disposal of Used Coolant
Disposal of engine/intercooler coolant is subject
to legal requirements. Contact the appropriate
body to determine local regulations.

NOTE:

To prevent the fluid from being ingested by
children or animals, do not keep it in open
containers or pour it on the ground. If ingested,
contact a doctor immediately. Eliminate any
traces of fluid from the ground immediately.
When the vehicle stops after a short trip,
steam may be seen coming out from the front
of the hood. This is a normal phenomenon
which is due to the presence of rain, snow or a
lot of moisture on the surface of the radiator.
With engine and system cold, do not top up
with coolant beyond the maximum level
indicated on the reservoir in the engine
compartment.
BRAKING SYSTEM
In order to guarantee the efficiency of the braking
system, periodically check its components; for
this operation, contact an authorized dealer.
For the correct servicing intervals

Ú
page 200.

NOTE:
Driving with your foot resting on the brake pedal
may compromise its efficiency, increasing the risk
of accidents. When driving, never keep your foot
on the brake pedal and don’t put unnecessary
strain on it to prevent the brakes from over
-
heating. Excess pad wear may cause damage to
the braking system.
When an insufficient oil level is detected,
contact an authorized dealer to have the
system checked.
Always keep the cap of the brake fluid reservoir
(in the engine compartment) completely
closed.
Do not use a pressure cap other than the one
specified for your vehicle. Personal injury or
engine damage may result.
WARNING!
WARNING!
Never add coolant with the engine hot or
overheated.
Do not attempt to cool an overheated engine
by loosening or removing the cap. The heat
causes a considerable increase in pressure
in the cooling system.
To prevent damage to the engine, only use
the engine cooling circuit caps provided.
WARNING!
Use only manufacturer's recommended
brake fluid
Ú
page 252. 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.
23_GU_OM_EN_USC_t.book Page 213

TECHNICAL SPECIFICATIONS

250

(Continued)
Problems that result from using gasoline
containing more than 15% ethanol (E-15) or
gasoline containing methanol are not the respon
-
sibility of the manufacturer and may void or not
be covered under New Vehicle Limited Warranty.
CNG AND LP FUEL SYSTEM
M
ODIFICATIONS
Modifications that allow the engine to run on
Compressed Natural Gas (CNG) or Liquid
Propane (LP) may result in damage to the engine,
emissions, and fuel system components.
Problems that result from running CNG or LP are
not the responsibility of the manufacturer and
may void or not be covered under the New
Vehicle Limited Warranty.
MMT IN GASOLINE
Methylcyclopentadienyl Manganese Tricarbonyl
(MMT) is a manganese-containing metallic
additive that is blended into some gasoline to
increase octane. Gasoline blended with MMT
provides no performance advantage beyond
gasoline of the same octane number without
MMT. Gasoline blended with MMT reduces
spark plug life and reduces emissions system
performance in some vehicles. The manufacturer
recommends that gasoline without MMT be used
in your vehicle. The MMT content of gasoline may
not be indicated on the gasoline pump; therefore,
you should ask your gasoline retailer whether the
gasoline contains MMT. MMT is prohibited in
Federal and California reformulated gasoline.
MATERIALS ADDED TO FUEL
Besides using unleaded gasoline with the proper
octane rating, gasolines that contain detergents,
corrosion and stability additives are
recommended. Using gasolines that have these
additives will help improve fuel economy, reduce
emissions, and maintain vehicle performance.
Designated TOP TIER Detergent
Gasoline contains a higher level of
detergents to further aide in minimizing
engine and fuel system deposits.
When available, the usage of TOP TIER Detergent
Gasoline is recommended. Visit

www.toptiergas.com
for a list of TOP TIER
Detergent Gasoline retailers.
Indiscriminate use of fuel system cleaning agents
should be avoided. Many of these materials
intended for gum and varnish removal may
contain active solvents or similar ingredients.
These can harm fuel system gasket and
diaphragm materials.
FUEL SYSTEM CAUTIONS
NOTE:
Intentional tampering with the emissions control
system can result in civil penalties being
assessed against you.
CAUTION!
Follow these guidelines to maintain your
vehicle’s performance:
The use of leaded gasoline is prohibited by
Federal law. Using leaded gasoline can
impair engine performance and damage the
emissions control system.
An out-of-tune engine or certain fuel or
ignition malfunctions can cause the catalytic
converter to overheat. If you notice a
pungent burning odor or some light smoke,
your engine may be out of tune or malfunc-
tioning and may require immediate service.
Contact an authorized dealer for service
assistance.
The use of fuel additives, which are now
being sold as octane enhancers, is not
recommended. Most of these products
contain high concentrations of methanol.
Fuel system damage or vehicle performance
problems resulting from the use of such fuels
or additives is not the responsibility of the
manufacturer and may void or not be
covered under the New Vehicle Limited
Warranty.
CAUTION!
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261

Door Locks .................................................... 28Automatic ................................................. 28
Door Opener, Garage ................................... 40
Doors............................................................. 25
Drive Train Control (DTC) System ..............141
Driving Modes .............................................. 97
Dynamic Steering Torque (DST) System ... 141
E
Electric Park Brake....................................... 89
Electric Remote Mirrors ............................... 38
Electronic Speed Control
(Cruise Control) ..........................................102
Electronic Stability Control (ESC)
System ........................................................141
Electronic Throttle Control Warning
Light .............................................................. 79
Emergency In Case Of ......................................183, 189
SOS Emergency Call .............................. 183
Emergency, In Case Of Jump Starting .........................................192
Overheating ............................................ 195
Towing.....................................................197
Emission Control System Maintenance...... 85
Engine ......................................................... 242 Block Heater............................................. 88
Engine Coolant Level .............................206
Exhaust Gas Caution .............................182
Fuel Requirements ................................ 249Jump Starting .........................................194
Oil ............................................................251
Oil Selection ...........................................251
Overheating ............................................ 195
Starting ................................................... 195 Engine Compartment ................................ 204
Engine Compartment (Washing) .............. 239
Engine Oil
Level Check ........................................... 205
Enhanced Accident Response
Feature .............................................. 168, 198
Ethanol ....................................................... 249
Exhaust Gas Cautions ............................... 182
Exhaust System ......................................... 182
Exterior Lighting ..................................... 43, 44
Exterior Lights ...................................... 43, 182
F
Flashers Hazard Warning ..................................... 183
Turn Signals .............................. 45, 78, 182
Fluid Capacities ......................................... 251
Fluid Leaks ................................................. 182
Fluids And Lubricants................................ 252
Fog Lights, Rear ............................................45
Forward Collision Warning ........................ 151
Fuel Additives ................................................ 250
Clean Air................................................. 249
Ethanol ................................................... 249
Light ..........................................................82
Materials Added .................................... 250
Methanol................................................ 249
Tank Capacity ........................................ 251
G
Garage Door Opener (HomeLink) ................40
Gasoline, Clean Air .................................... 249
Gasoline, Reformulated ............................ 249
Gross Axle Weight Rating .......................... 133 Gross Vehicle Weight Rating ..................... 133
GVWR .......................................................... 132
H
Hands-Free Liftgate ..................................... 64
Hazard Warning Flashers .......................... 183
Head Restraints ........................................... 36
Head Rests ................................................... 36
Headlights
Switch .................................................43, 44
Headlights (Cleaning) ................................ 239
Heated Mirrors ............................................. 39
Heated Seats ............................................... 35
Heated Steering Wheel ............................... 30
Heater, Engine Block ................................... 88
Highway Assist System .............................. 111
Hill Decent Control (HDC) System............. 142
Hill Start Assist (HSA) System ................... 143
Hitches Trailer Towing......................................... 134
HomeLink (Garage Door Opener) ............... 40
Hood Closing ...................................................... 62Opening .................................................... 62
I
Ignition .......................................................... 22 Switch ....................................................... 22
Immobilizer (Sentry Key) ............................. 21
In Case Of Emergency ............................... 183
Installing Electrical/Electronic Devices ......... 4
Instrument Cluster ....................................... 68 Descriptions ................................ 69, 70, 78
Display ...................................................... 70Reconfigurable Display ........................... 70
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262

INDEX
Instrument PanelFeatures ................................................... 68
Intelligent Speed Control System..............119
Interior Lights ............................................... 45
Interiors (Cleaning)..................................... 240
J
Jump Starting ............................................. 192
K
Keyless Enter 'n Go™ ................................... 26 Passive Entry ............................................ 26
Keys .............................................................. 19
L
Lane Change And Turn Signals ................... 45
Lane Departure Warning System ..............123
Lane Keep Assist System ..........................125
Lap/Shoulder Belts ....................................158
Latches .......................................................182
Leaks, Fluid ................................................182
Life Of Tires.................................................233
Liftgate .......................................................... 62
Light Bulbs ..................................................182 Types Of Bulbs ....................................... 220
Lights .......................................................... 182 Air Bag .................................... 75, 162, 180Automatic Headlights .............................. 44
Brake Warning .................................. 75, 76Courtesy/Reading ............................. 46, 47Daytime Running ..................................... 43 Electronic Stability Program (ESP)
Indicator......................................... 76, 80
Exterior ................................................... 182
Fog...................................................... 45, 77
Headlight Switch ............................... 43, 44
Headlights.......................................... 43, 44
High Beam ................................................44
Instrument Cluster ............................ 43, 44
Intensity Control .......................................47
Interior................................................ 46, 47
Low Fuel ....................................................82
Malfunction Indicator (Check Engine) .....................................77
Map ...........................................................46
Oil Temperature........................................ 76
Park .................................................... 45, 78
Reading .....................................................46
Seat Belt Reminder ..................................76
Turn Signals .............................. 45, 78, 182
Warning Instrument Cluster Descriptions .................................. 78, 80
Loading Vehicle ......................................... 132 Tires........................................................ 227
Locks Automatic Door.........................................28
Child Protection ........................................ 29
M
Maintenance .................................................61
Malfunction Indicator Light
(Check Engine)....................................... 77, 85
Manual Service ................................................... 258 Memory Feature (Memory Seats) ............... 30
Memory Seat ................................................ 30
Methanol .................................................... 249
Mirrors .......................................................... 38
Automatic Dimming ................................. 38
Electric Powered ...................................... 38
Electric Remote ....................................... 38
Heated...................................................... 39
O
Occupant Restraints .................................. 157
Oil Pressure Light ......................................... 80
Oil, Engine Capacity.................................................. 251
Pressure Warning Light ........................... 80
Recommendation .................................. 251
Viscosity ................................................. 251
Opener, Garage Door (HomeLink) .............. 40
Operator Manual Owner's Manual ..................................... 258
Outlet Power........................................................ 57
Overheating, Engine .................................. 195
P
Paintwork (Cleaning And Maintenance) ... 239
Panic Brake Assist (PBA) System.............. 143
Park Assist.................................................. 120
ParkSense System ..................................... 120
Passive Entry ................................................ 26
Performance (Top Speed) ......................... 254
Pets ............................................................. 180
Placard, Tire And Loading Information ..... 227
23_GU_OM_EN_USC_t.book Page 262