2017 Hyundai Elantra cooling

7
Maintenance
ENGINE COOLANT
Removing radiator
cap
•Never attempt to remove the
radiator cap while the engine
is operating or hot.
(Continued)
WARNING
(Continued)
Doing so might lead to cooling
system and engine damage
and could result in serious
personal injury from escaping
hot coolant or steam.
•Turn the engine off and wait
until it cools down. Use
extreme care when removing
the radiator cap. Wrap a thick
towel around it, and turn it
counterclockwise slowly to
the first stop. Step back while
the pressure is released from
the cooling system.
When you are sure all the
pressure has been released,
press down on the cap, using
a thick towel, and continue
turning counterclockwise to
remove it.
•Even if the engine is not oper-
ating, do not remove the radia-
tor cap or the drain plug while
the engine and radiator are
hot. Hot coolant and steam
may still blow out under pres-
sure, causing serious injury.
OAD075009
The high-pressure cooling system
has a reservoir filled with year-round
antifreeze coolant. The reservoir is
filled at the factory.
Check the antifreeze protection and
coolant concentration level at least
once a year, at the beginning of the
winter season, and before traveling
to a colder climate.
• When the engine overheats from
low engine coolant, suddenly
adding engine coolant may
cause cracks in the engine. To
prevent damage, add engine
coolant slowly in small quanti-
ties.
• Do not drive with no engine
coolant. It may cause water pump
failure and engine seizure, etc.Checking the engine coolant
level
NOTICE
7-35

7-36
Maintenance
Check the condition and connections
of all cooling system hoses and
heater hoses. Replace any swollen
or deteriorated hoses.
The coolant level should be filled
between F (MAX) and L (MIN) marks
on the side of the coolant reservoir
when the engine is cool.If the coolant level is low, add enough
distilled (deionized) water. Bring the
level to F (MAX), but do not overfill.
If frequent additions are required, we
recommend that the system be
inspected by an authorized HYUNDAI
dealer. The electric motor
(cooling fan) is con-
trolled by engine
coolant temperature,
refrigerant pressure
and vehicle speed. It may some-
times operate even when the
engine is not running. Use
extreme caution when working
near the blades of the cooling
fan so that you are not injured
by a rotating fan blades. As the
engine coolant temperature
decreases, the electric motor
will automatically shut off. This
is a normal condition.
The electric motor (cooling fan)
may operate until you discon-
nect the negative battery cable.
WARNING
OAD075008
OAD075007
■Gasoline engine
■Diesel engine

Maintenance
7-76
SymbolRelay NO.Relay NameType
R LY. 1 BPTC HEATER #2 RelayMICRO
R LY. 2COOLING FAN2 RelayMICRO
R LY. 3PDM #3 (IG1) RelayMICRO
R LY. 4START #1 RelayMICRO
R LY. 5 ASUB FUEL PUMP RelayMICRO
R LY. 5 BFUEL HEATER Relay (D4FB)MICRO
R LY. 6PDM #4 (IG2) RelayMICRO
R LY. 7B/ALARM HORN RelayMICRO
R LY. 8PDM #2 (ACC) RelayMICRO
R LY. 9COOLING FAN1 RelayMINI
R LY. 1 0REAR HEATED RelayMINI
R LY. 1 1 AA/C RelayMICRO
R LY. 1 1 BPTC HEATER #1 Relay
(D4FB)MICRO
SymbolRelay NO.Relay NameType
R LY. 1 2BLOWER RelayMICRO
R LY. 1 3 AH/LAMP HI RelayMICRO
R LY. 1 3 BPTC HEATER #3 Relay
(D4FB)MICRO
R LY. 1 4POWER OUTLET Relay
(D4FB)MICRO

7-77
7
Maintenance
Fuse NameSymbolFuse ratingCircuit Protected
MAIN150AFuse : F28, F29, F30, F31, F34
MDPS180AMDPS Unit
BATT560APCB Block (Fuse : F8, F14, F15, F16, Engine Control Relay)
BATT260ASmart Junction Block (Fuse : F36, ARISU)
BATT360ASmart Junction Block (Fuse : ARISU, IPS)
BATT450ASmart Junction Block (Fuse : F20, F26, F27, F33, F34, F35, F41)
COOLING FAN150ARLY.9, RLY.2 (DSL)
RR HTD50ARLY.10
BLOWER40ARLY.12
IG140AIgnition Switch, E/R Junction Block (RLY.3, RLY8)
IG240AIgnition Switch, E/R Junction Block (RLY.6)
GLOW80AGlow Relay Unit
Engine compartment main fuse panel

Maintenance
7-78
Fuse NameSymbolFuse ratingCircuit Protected
PTC HEATER150ARLY.11B
PTC HEATER250ARLY.1B
PTC HEATER350ARLY.13B
FUEL HEATER40ARLY.5B
B/UP LAMP10AElectro Chromic Mirror, Rear Combination Lamp (IN) LH/RH, Audio, MTS E-Call Module,
Smart Junction Block (IPS Control Module)
POWER
OUTLET320ACigarette Lighter
POWER
OUTLET220APower Outlet
HEAD LAMP HI20ARLY.13A
TCU115ATCM
VACUUM PUMP120ANet Used
A/CON10ANet Used
COOLING FAN240ARLY.9, RLY.2 (GSL)
Engine compartment main fuse panel

Maintenance
7-82
Engine compartment main fuse panel - PCB Block (UII 1.6 TCI)
Fuse NameSymbolFuse ratingCircuit Protected
SNSR210AElectronic Vgt Actuator, Egr Cooling Bypass Solenoid Valve,
Stop Lamp Switch, Pm (Particulate Matter) Sensor, Fuel Pressure Regulating Valve,
Rail Pressure Regulating Valve, E/R Junction Block (RLY.2, RLY.9, RLY.5B, RLY,11B)
ECU215A-
ECU110AECM
INJ.15A-
SNSR115ALambda Sensor #1, Lambda Sensor #2
IGN.15A-
SNSR320AFuel Pump Relay, Air Flow Sensor, Camshaft Position Sensor, Oil Control Valve
HORN10AHorn Relay
ECU510AECM
SNSR420AFuel Filter Warning Sensor, Glow Relay Unit
ABS315AABS/ESC Control Module, Multipurpose Check Connector
TCU215ATCM, Transmission Range Switch