Kia SORENTO HEV 2023 Manual page 566

Maintenance
Fuel lines, fuel hoses and connec-
tions
Check the fuel lines, fuel hoses and con-
nections for leakage and damage. Have
the fuel lines, fuel hoses and connec-
tions replaced by a professional work-
shop. Kia recommends to visit an
authorised Kia dealer/service partner.
Vapour hose and fuel filler cap
The vapour hose and fuel filler cap
should be inspected at those intervals
specified in the maintenance schedule.
Make sure that a new vapour hose or
fuel filler cap is correctly replaced.
Air cleaner filter
Have the air cleaner filter replaced by a
professional workshop. Kia recommends
to visit an authorised Kia dealer/service
partner.
Spark plugs
Make sure to install new spark plugs of
the correct heat range.
When assembling parts, be sure to wipe
the inside and outside of the boot bot-
tom of the ignition coil and the insulator
of the spark plug with a soft cloth to pre-
vent contamination of the spark plug
insulator.
WARNING
Do not disconnect and inspect spark
plugs when the engine is hot. You may
burn yourself.
Cooling system
Check the cooling system components,
such as the radiator, coolant reservoir,
hoses and connections for leakage and
damage. Replace any damaged parts.
8 22
Explanation of scheduled maintenance items
Coolant/inverter coolant
The coolant should be changed at the
intervals specified in the maintenance
schedule.
Automatic transmission fluid
Automatic transmission fluid should not
be checked under normal usage condi-
tions. Have the automatic transmission
fluid changed by a professional work-
shop according to the maintenance
schedule. Kia recommends to visit an
authorised Kia dealer/service partner.
NOTICE
Automatic transmission fluid colour is
basically red.
As the vehicle is driven, the automatic
transmission fluid will begin to look
darker. It is normal condition and you
should not judge the need to replace the
fluid based upon the changed colour.
CAUTION
The use of a non-specified fluid could
result in transmission malfunction and
failure.
Use only specified automatic transmis-
sion fluid. (Refer to "Recommended
lubricants and capacities" on page 9-9.)
Brake hoses and lines
Visually check for proper installation,
chafing, cracks, deterioration and any
leakage. Replace any deteriorated or
damaged parts immediately.