check engine HYUNDAI TUCSON 2021 Repair Manual

7-72
Maintenance
Inside lamp
Tail lamp/Reverse lamp
1. Turn off the engine.
2. Open the liftgate.
3. Remove the service cover using aflat-blade screwdriver. 4. Remove the socket from the
assembly by turning the socket
counterclockwise until the tabs on
the socket align with the slots on
the assembly.
5. Pull the bulb out of the socket.
6. Insert a new bulb by pushing it in into the socket.
7. Install the socket into the assem- bly by aligning the tabs on the
socket with the slots on the
assembly and turning the socket
clockwise.
8. Reinstall the lamp assembly to the body of the vehicle.
Tail lamp, Tail/Stop lamp and Side
marker
If the LED lamp does not operate,
have the system checked by an
authorized HYUNDAI dealer.
The LED lamps cannot replaced as a
single unit because it is an integrated
unit. The LED lamps has to be
replaced with the unit.
A skilled technician should check or
repair the LED lamp, for it may dam-
age related parts of the vehicle.
OTLE075016
OTL078039
Tail lamp
Reverse lamp

7-84
Maintenance
Canister
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 sole-
noid valve.
Purge Control Solenoid Valve(PCSV)
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 evap-
orated 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.
3. Exhaust Emission Control System
The Exhaust Emission Control
System is a highly effective system
which controls exhaust emissions
while maintaining good vehicle per-
formance.
When the engine starts or fails to
start, excessive attempts to restart
the engine may cause damage to the
emission system.
Vehicle modifications
This vehicle should not be modi-
fied. Modification of your vehicle
could affect its performance, safety
or durability and may even violate
governmental safety and emis-
sions regulations.
In addition, damage or performance
problems resulting from any modifi-
cation may not be covered under
warranty.
If you use unauthorized electronic devices, it may cause the vehicle to
operate abnormally, wire damage,
battery discharge and fire. For your
safety, do not use unauthorized
electronic devices.
Engine exhaust (carbon monox-ide) precautions
Carbon monoxide can be present
with other exhaust fumes. If you
smell exhaust fumes of any kind in
your vehicle, drive with all the win-
dows fully open. Have your vehicle
checked and repaired immediately.
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 poi-
soning.
WARNING

8-10
Specifications, Consumer information and Reporting safety defects
Recommended SAE Viscosity
Number
Always be sure to clean the area
around any filler plug, drain
plug, or dipstick before check-
ing or draining any lubricant.
This is especially important in
dusty or sandy areas and when
the vehicle is used on unpaved
roads. Cleaning the plug and
dipstick areas will prevent dirt
and grit from entering the
engine and other mechanisms
that could be damaged.
CAUTION
Engine oil viscosity (thickness) has an effect on fuel economy and cold
weather operating (engine start and engine oil flowability). Lower viscosity
engine oils can provide better fuel economy and cold weather performance,
however, higher viscosity engine oils are required for satisfactory lubrication
in hot weather. Using oils of any viscosity other than those recommended
could result in engine damage. When choosing an oil, consider the range of
temperature your vehicle will be operated in before the next oil change.
Proceed to select the recommended oil viscosity from the chart.
Temperature Range for SAE Viscosity Numbers
Temperature -30 -20 -10 0 10 20 30 40 50
-10 0 20 40 60 80 100 120
Engine Oil *110W-30
5W-20, 5W-30
°C
(°F)
*1: For better fuel economy, it is recommended to use the engine oil
of a viscosity grade SAE 5W-20/API Latest (ILSAC Latest).
However, if the engine oil is not available in your country, select
the proper engine oil using the engine oil viscosity chart.
An engine oil displaying this American Petroleum Institute(API) Certification Mark
conforms to the International Lubricant Specification Advisory Committee (ILSAC). It
is recommended to only use engine oils that uphold this API Certification Mark.

I-4
Driver Assist System.....................................................3-124
Rear View Monitor ...................................................3-124
Surround View Monitor ...........................................3-125
Driver Attention Warning (DAW) System......................5-96
Resetting the System ..................................................5-97
System Malfunction ...................................................5-98
System Setting and Activation ...................................5-96
System Standby ..........................................................5-98
Driver's front air bag .......................................................2-50
Electric Power Steering (EPS) ........................................3-21
Electronic Parking Brake (EPB) .....................................5-24
Electronic Stability Control (ESC) .................................5-35
Emission Control System ...............................................7-83
Crankcase Emission Control System .........................7-83
Evaporative Emission Control System Including
Onboard Refueling Vapor Recovery (ORVR) ........7-83
Exhaust Emission Control System .............................7-84
Engine ...............................................................................8-2
Engine compartment..................................................1-6, 7-3
Engine Coolant ...............................................................7-19
Changing Engine Coolant ..........................................7-22
Checking the Engine Coolant Level ..........................7-19
Engine Number ...............................................................8-12
Engine Oil .......................................................................7-17
Checking the Engine Oil and Filter ...........................7-18
Checking the Engine Oil Level ..................................7-17Explanation Of Scheduled Maintenance Items ..............7-14
Exterior Features .................................................3-47, 3-171
Fuel Filler Door ..........................................................3-48
Hood ...........................................................................3-47
Roof Rack.................................................................3-171
Exterior Lights ..............................................................3-107
AUTO headlamp position ........................................3-108
Battery saver function ..............................................3-114
Daytime running light (DRL) ..................................3-107
Front fog lamp ..........................................................3-114
Headlamp delay function..........................................3-115
Headlamp position....................................................3-109
High Beam Assist (HBA) .........................................3-110
High beam operation ................................................3-109
Lane change signals..................................................3-113
Parking lamp position ..............................................3-108
Turn signals ..............................................................3-113
Exterior overview .............................................................1-2
Floor Mat Anchor(s) .....................................................3-166
Forward Collision-Avoidance Assist (FCA) System
- Camera Type .............................................................5-60
FCA Sensor ................................................................5-65
FCA Warning Message and System Control..............5-63
Limitations of the System ..........................................5-68
System Not Operating ................................................5-67
System Setting and Activation ...................................5-60
Index
E
F