Maintenance -> Emission control system for Your Hyundai Santa Fe SUV 2023

09  
EMISSION CONTROL SYSTEM  
The emission control system of your  
vehicle is covered by a written limited  
warranty. Please see the warranty  
information contained in the Owner’s  
Handbook & Warranty Information  
booklet in your vehicle.  
Your vehicle is equipped with an  
emission control system to meet all  
applicable emission regulations. There  
are three emission control systems, as  
follows.  
1. Crankcase emission control  
system  
The positive crankcase ventilation system  
is employed to prevent air pollution  
caused by blow-by gases being emitted  
from the crankcase. This system supplies  
fresh filtered air to the crankcase through  
the air intake hose. Inside the crankcase,  
the fresh air mixes with blow-by gases,  
which then pass through the PCV valve  
into the induction system.  
(1) Crankcase emission control system  
(2) Evaporative emission control system  
(3) Exhaust emission control system  
2. Evaporative Emission Control  
System Including Onboard  
Refueling Vapor Recovery  
(ORVR)  
The Evaporative Emission Control System  
is designed to prevent fuel vapors from  
escaping into the atmosphere. The  
ORVR system is designed to allow the  
vapors from the fuel tank to be loaded  
into a canister while refueling at the gas  
station, preventing the escape of fuel  
vapors into the atmosphere.  
In order to ensure the proper function  
of the emission control systems, it  
is recommended that you have your  
vehicle inspected and maintained  
by an authorized HYUNDAI dealer in  
accordance with the maintenance  
schedule in this manual.  
NOTICE  
Canister  
For the Inspection and Maintenance  
Test (with Electronic Stability Control  
(ESC) system)  
Fuel vapors generated inside the fuel  
tank are absorbed and stored in the  
onboard canister. When the engine is  
running, the fuel vapors absorbed in the  
canister are drawn into the surge tank  
through the purge control solenoid valve.  
śꢀ To prevent the vehicle from misfiring  
during dynamometer testing, turn  
the Electronic Stability Control  
(ESC) system off by pressing the ESC  
switch (ESC OFF light illuminated).  
Purge Control Solenoid Valve (PCSV)  
śꢀ After dynamometer testing is  
The purge control solenoid valve  
is controlled by the Engine Control  
Module (ECM); when the engine coolant  
temperature is low during idling, the  
PCSV closes so that evaporated fuel  
is not taken into the engine. After the  
engine warms-up during ordinary  
driving, the PCSV opens to introduce  
evaporated fuel to the engine.  
completed, turn the ESC system back  
on by pressing the ESC switch again.  
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Maintenance  
śꢀ Do not operate the engine in confined  
or closed areas (such as garages) any  
more than what is necessary to move  
the vehicle in or out of the area.  
śꢀ When the vehicle is stopped in an  
open area for more than a short time  
with the engine running, adjust the  
ventilation system (as needed) to draw  
outside air into the vehicle.  
śꢀ Never sit in a parked or stopped  
vehicle for any extended time with the  
engine running.  
śꢀ When the engine stalls or fails to  
start, excessive attempts to restart  
the engine may cause damage to the  
emission control system.  
3. Exhaust emission control  
system  
The Exhaust Emission Control System is  
a highly effective system which controls  
exhaust emissions while maintaining  
good vehicle performance.  
When the engine starts or fails to start,  
excessive attempts to restart the engine  
may cause damage to the emission  
system.  
Engine exhaust (carbon monoxide)  
precautions  
śꢀ Carbon monoxide can be present  
with other exhaust fumes. If you smell  
exhaust fumes of any kind in your  
vehicle, drive with all the windows  
fully open. Have your vehicle checked  
and repaired immediately.  
Operating precautions for catalytic  
converters (if equipped)  
WARNING  
WARNING  
The exhaust system and catalytic  
system are very hot while the engine is  
running or immediately after the engine  
is turned off. To avoid SERIOUS INJURY  
or DEATH:  
Engine exhaust gases contain carbon  
monoxide (CO). Though colorless and  
odorless, it is dangerous and could be  
lethal if inhaled. Follow the instructions  
on this page to avoid CO poisoning.  
śꢀ Do not park, idle, or drive the vehicle  
over or near flammable objects, such  
as grass, vegetation, paper, leaves,  
etc. A hot exhaust system can ignite  
flammable items under your vehicle.  
WARNING  
CALIFORNIA PROPOSITION 65  
WARNING  
śꢀ Keep away from the exhaust system  
and catalytic converter or you may  
get burned.  
Engine exhaust and a wide variety of  
automobile components and parts,  
including components found in the  
interior furnishings in a vehicle, contain  
or emit chemicals known to the State  
of California to cause cancer and  
birth defects and reproductive harm.  
In addition, certain fluids contained  
in vehicles and certain products of  
component wear contain or emit  
chemicals known to the State of  
Also, do not remove the heat sink  
around the exhaust system, do not  
seal the bottom of the vehicle, and  
do not coat the vehicle for corrosion  
control. It may present a fire risk  
under certain conditions.  
California to cause cancer and birth  
defects or other reproductive harm.  
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09  
Your vehicle is equipped with a catalytic  
converter emission control device.  
To prevent damage to the catalytic  
converter and to your vehicle, take the  
following precautions:  
Gasoline Particulate Filter (GPF)  
(if equipped)  
Gasoline Particulate Filter (GPF) system  
removes the soot in the exhaust gas.  
The GPF system automatically burns  
(or oxidizes) the accumulated soot in  
accordance with driving situations,  
unlike a disposable air filter.  
śꢀ Use only UNLEADED FUEL for  
gasoline engines.  
śꢀ Do not operate the vehicle when  
there are signs of engine malfunction,  
such as misfire or a noticeable loss of  
performance.  
śꢀ Do not misuse or abuse the engine.  
Examples of misuse are coasting with  
the engine off and descending steep  
grades in gear with the engine off.  
śꢀ Do not operate the engine at high  
idle speed for extended periods (5  
minutes or more).  
śꢀ Do not modify or tamper with any  
part of the engine or emission  
control system. Have all inspections  
and adjustments are made by an  
authorized HYUNDAI dealer.  
In other words, the accumulated soot is  
automatically purged out by the engine  
control system and by the high exhaust-  
gas temperature at normal/ high driving  
speeds. However, when the vehicle is  
continually driven at repeated short  
distances or driven at low speed for a  
long time, the accumulated soot may  
not be automatically removed because  
of low exhaust gas temperature. In this  
case, the accumulated soot may reach  
a certain amount regardless of the soot  
oxidization process, then the GPF lamp  
(
) will illuminate.  
The Gasoline Particulate Filter (GPF)  
lamp stops illuminating, when the  
driving speed exceeds 50 mph (80 km/h)  
with engine rpm 1,500 ~ 4,000 and the  
gear in the 3rd position or above for  
approximately 30 minutes.  
When the GPF lamp starts to blink or  
the warning message “Check exhaust  
system” pops up even though the vehicle  
was driven as mentioned above, have the  
GPF system checked by an authorized  
HYUNDAI dealer.  
śꢀ Avoid driving with an extremely low  
fuel level.  
Running out of fuel could cause the  
engine to misfire, damaging the  
catalytic converter.  
With GPF lamp blinking for an extended  
period of time, it may damage the GPF  
system and lower the fuel economy.  
CAUTION  
We recommend you to use only the  
regulated gasoline fuels, when your  
vehicle is equipped with the GPF  
system.  
When you use other gasoline fuels  
which contain unspecified additives,  
they may damage the GPF system and  
cause exhaust emission problems.  
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