2018 Hyundai Ioniq Plug-in Hybrid coolant reservoir

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Your vehicle at a glance
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1. Engine oil filler cap ...........................7-16
2. Engine oil dipstick .............................7-16
3. Engine coolant cap ...........................7-19
4. Engine coolant reservoir ...................7-18
5. Inverter coolant reservoir ..................7-18
6. Brake fluid reservoir ..........................7-22
7. Air cleaner.........................................7-24
8. Windshield washer fluid reservoir .....7-23
9. Fuse box ...........................................7-51
OAE076001
The actual engine compartment in the vehicle may differ from the illustration.

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Your vehicle at a glance
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1. Engine oil filler cap ...........................7-16
2. Engine oil dipstick .............................7-16
3. Engine coolant cap ...........................7-19
4. Engine coolant reservoir ...................7-18
5. Inverter coolant reservoir ..................7-18
6. Brake fluid reservoir ..........................7-22
7. Air cleaner.........................................7-24
8. Windshield washer fluid reservoir .....7-23
9. Fuse box ...........................................7-51
❈ The 12 volt battery is located in the lug-
gage compartment.
OAEPH076001
The actual engine compartment in the vehicle may differ from the illustration.

3-76
Low Pressure
This message is displayed if the tire
pressure is low. The corresponding
tire on the vehicle will be illuminated.
For more details, refer to "Tire
Pressure Monitoring System
(TPMS)" in chapter 6.
Turn on FUSE SWITCH/Turn FUSE SWITCH On
Either message is displayed if the
fuse switch located on the fuse box
under the steering wheel is OFF.
You should turn the fuse switch on.
For more details, refer to "Fuses"
in chapter 7.
Low Washer Fluid (if equipped)
This message is displayed if the
washer fluid level in the reservoir is
nearly empty.
Have the washer fluid reservoir
refilled.
Low Fuel
This message is displayed if the fuel
tank is almost out of fuel.
When this message is displayed, the
low fuel level warning light in the
cluster will come on.
It is recommended to look for the
nearest fueling station and refuel as
soon as possible.
Add fuel as soon as possible.
Engine has overheated / Engineoverheated
Either message is displayed when
the engine coolant temperature is
above 248°F (120°C). This means
that the engine is overheated and
may be damaged.
If your vehicle is overheated, refer
to "Overheating" in chapter 6.
Convenient features of your vehicle
■ Type B
■
Type A
OAE046114L/OAE046115L
OLFH044149L/OAEPH047564N

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What to do in an emergency
6
7. If you cannot find the cause of theoverheating, wait until the engine
temperature has returned to nor-
mal. Then, if coolant has been
lost, carefully add coolant to the
reservoir to bring the fluid level in
the reservoir up to the halfway
mark.
8. Proceed with caution, keeping alert for further signs of overheat-
ing. If overheating happens again,
call an authorized HYUNDAI deal-
er for assistance.
Serious loss of coolant indi-
cates a leak in the cooling sys-
tem and should be checked as
soon as possible by an author-
ized HYUNDAI dealer.
CAUTION
Your vehicle is
equipped with a pres-
surized coolant
reserve tank. NEVER
remove the coolant
reserve tank cap or the radiator
drain plug while the engine and
radiator are HOT. Hot coolant
and steam may blow out under
pressure, causing serious
injury.
Turn the engine off and wait
until the engine cools down.
Use extreme care when remov-
ing the coolant reserve tank
cap. Wrap a towel or thick rag
around it, and turn it counter-
clockwise slowly to release
some of the pressure from the
system. Step back while the
pressure is released.
When you are sure all the pres-
sure has been released, contin-
ue turning the cap counter-
clockwise to remove it.
WARNING

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7
Maintenance
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OAE076001
1. Engine oil filler cap
2. Engine oil dipstick
3. Engine coolant cap
4. Engine coolant reservoir
5. Inverter coolant reservoir
6. Brake fluid reservoir
7. Air cleaner
8. Windshield washer fluid reservoir
9. Fuse box
The actual engine compartment in the vehicle may differ from the illustration.
■ ■
Hybrid vehicle

7-4
Maintenance
OAEPH076001
1. Engine oil filler cap
2. Engine oil dipstick
3. Engine coolant cap
4. Engine coolant reservoir
5. Inverter coolant reservoir
6. Brake fluid reservoir
7. Air cleaner
8. Windshield washer fluid reservoir
9. Fuse box
The actual engine compartment in the vehicle may differ from the illustration.
■ ■
Plug-in hybrid vehicle

7-7
7
Maintenance
How to Disconnect the (-)
Cable for Regular Maintenance
(Hybrid vehicle)
When the vehicle is under regular
maintenance, make sure to separate
the (-) cable before maintenance.
Separate the (-) cable following the
below instructions.
1. Fold the rear left side seat.
2. Remove the service cover (A) onthe luggage trim.
3. Separate the (-) cable (B).
Reassemble in the reverse order.
Owner Maintenance Schedule
When you stop for fuel:
• Check the engine oil level.
Check the coolant level in the engine coolant reservoir.
Check the windshield washer fluid level.
Check for low or under-inflated tires.
While operating your vehicle:
Note any changes in the sound ofthe exhaust or any smell of
exhaust fumes in the vehicle.
Check for vibrations in the steering wheel. Notice if there is any
increased steering effort or loose-
ness in the steering wheel, or
change in its straight-ahead posi-
tion.
Notice if your vehicle constantly turns slightly or "pulls" to one side
when traveling on smooth, level
road.
When stopping, listen and check for unusual sounds, pulling to one
side, increased brake pedal travel
or "hard-to-push" brake pedal.
If any slipping or changes in the operation of your transmission
occurs, check the transmission
fluid level.
Check the dual clutch transmission P (Park) function.
Check the parking brake.
Check for fluid leaks under your vehicle (water dripping from the air
conditioning system during or after
use is normal).
Be careful when checking your
engine coolant/inverter coolant
level when the engine is hot.
This may result in coolant being
blown out of the opening and
cause serious burns and other
injuries.
WARNING
OAE076073N
AB

7-8
Maintenance
At least monthly:
Check coolant level in the enginecoolant reservoir.
Check the operation of all exterior lights, including the brake lights,
turn signals and hazard warning
flashers.
Check the inflation pressures of all tires including the spare for tires
that are worn, show uneven wear,
or are damaged.
Check for loose wheel lug nuts.
At least twice a year: (i.e., every Spring and Fall)
Check radiator, heater and air con-
ditioning hoses for leaks or dam-
age.
Check windshield washer spray and wiper operation. Clean wiper
blades with a clean cloth damp-
ened with washer fluid.
Check headlamp alignment.
Check muffler, exhaust pipes, shields and clamps.
Check the seat belts for wear and function.
At least once a year:
Clean body and door drain holes.
Lubricate door hinges and hoodhinges.
Lubricate door and hood locks and latches.
Lubricate door rubber weather strips.
Lubricate door checker.
Check the air conditioning system.
Inspect and lubricate transmission linkage and controls.
Clean the battery and terminals.
Check the brake fluid level. Follow Normal Maintenance Schedule
if the vehicle is usually operated where
none of the following conditions apply.
If any of the following conditions apply,
you must follow the Maintenance
Under Severe Usage Conditions.
Repeated short distance driving.
Driving in dusty conditions or
sandy areas.
Extensive use of brakes.
Driving in areas where salt or other corrosive materials are used.
Driving on rough or muddy roads.
Driving in mountainous areas.
Extended periods of idling or low speed operation.
Driving for a prolonged period in cold temperatures and/or extreme-
ly humid climates.
More than 50% driving in heavy city traffic during hot weather
above 90°F (32°C).
For additional information or assis-
tance see your authorized HYUNDAI
dealer.
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