2012 Hyundai Sonata Owners Manual

Maintenance
Canister
3. Exhaust emission control
system
The Exhaust Emission Control System is
a highly  effective system  which controls
exhaust   emissions   while   maintaining
good vehicle performance.
Engine exhaust gas precautions (car-
bon monoxide)
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.
•  Carbon monoxide can  be present with
other exhaust  fumes. Therefore, if you
smell exhaust fumes of any kind inside
your  vehicle,   have  it  inspected   and
repaired immediately.  If you  ever sus-
pect  exhaust  fumes  are  coming  into
your  vehicle, drive  it only  with  all the
windows fully open.  Have your vehicle
checked and repaired immediately.
Vehicle modifications
Purge Control Solenoid Valve (PCSV)
This  vehicle   should   not  be   modified.
Modification of  your vehicle  could affect
its performance,  safety or  durability and
may  even  violate   governmental  safety
and emissions regulations.
In   addition,   damage   or  performance
problems resulting from any modification
may not be covered under warranty.
•  If   you  use   unauthorized   electronic
devices,  it  may  cause the  vehicle  to
operate abnormally, wire damage, bat-
tery discharge  or fire.  For your safety,
do  not   use   unauthorized  electronic
devices.
The purge control  solenoid valve is con-
trolled  by   the  Engine  Control   Module
(ECM); when the engine coolant temper-
ature is low during idling, the PCSV clos-
es  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.
WARNING - Exhaust
Engine exhaust  gases contain car-
bon monoxide  (CO). Though color-
less and  odorless, it  is  dangerous
and   could   be   lethal   if   inhaled.
Follow   the   instructions   on   this
page to avoid CO poisoning.
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74
Product Specification
Categories Hyundai Manuals, Hyundai Sonata Manuals
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- 411 pages
Document TypeOwners Manual
LanguageEnglish
Product BrandHyundai, Sonata
Document File TypePDF
CopyrightAttribution Non-commercial
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