2019 Hyundai Ioniq Plug-in Hybrid maintenance

3-139
Convenient features of your vehicle
3
Air conditioning system operation
tips
If the vehicle has been parked indirect sunlight during hot weather,
open the windows for a short time
to let the hot air inside the vehicle
escape.
Use air conditioning to reduce humidity and moisture inside the
vehicle on rainy or humid days.
During air conditioning system operation, you may occasionally
notice a slight change in engine
speed as the air conditioning com-
pressor cycles. This is a normal
system operation characteristic.
Use the air conditioning system every month only for a few minutes
to ensure maximum system per-
formance.
When using the air conditioning system, you may notice clear water
dripping (or even puddling) on the
ground the vehicle. This is a normal
system operation characteristic. Operating the air conditioning sys-
tem in the recirculated air position
provides maximum cooling, how-
ever, continual operation in this
mode may cause the air inside the
vehicle to become stale.
During cooling operation, you may occasionally notice a misty air flow
because of rapid cooling and
humid air intake. This is a normal
system operation characteristic.
System maintenance
Climate control air filter
The climate control air filter installed
behind the glove box filters the dust
or other pollutants that come into the
vehicle from the outside through the
heating and air conditioning system.
If dust or other pollutants accumulate
in the filter over a period of time, the
air flow from the air vents may
decrease, resulting in moisture accu-
mulation on the inside of the wind-
screen even when the outside (fresh)
air position is selected. If this hap-
pens, we recommend that the cli-
mate control air filter be replaced by
a HYUNDAI authorised repairer.
1LDA5047
Outside air
Recirculatedair
Climate control air filter Blower
Evaporatorcore Heater core

3-140
Convenient features of your vehicle
Information
• Replace the filter according to theMaintenance Schedule.
If the car is being driven in severe
conditions such as dusty, rough
roads, more frequent climate con-
trol air filter inspections and
changes are required.
• When the air flow rate suddenly decreases, we recommend that the
system be checked by a HYUNDAI
authorised repairer.
Checking the amount of air con-ditioner refrigerant and com-pressor lubricant
When the amount of refrigerant is
low, the performance of the air con-
ditioning is reduced. Overfilling also
reduces the performance of on the
air conditioning system.
Therefore, if abnormal operation is
found, we recommend that the sys-
tem be inspected by a HYUNDAI
authorised repairer.
i
Vehicles equipped with R-134a
Because the refriger-
ant is at very high
pressure, the air con-
ditioning system
should only be serv-
iced by trained and certified
technicians. It is important that
the correct type and amount of
oil and refrigerant is used.
Otherwise, it may cause damage
to the vehicle and personal injury.
WARNING
Vehicles equipped with
R-1234yf
Because the refriger-
ant is mildly inflam-
mable at very high
pressure, the air con-
ditioning system
should only be serv-
iced by trained and
certified technicians.
It is important that the
correct type and amount of oil
and refrigerant is used.
Otherwise, it may cause dam-
age to the vehicle and personal
injury.
WARNING

5
Cruise control .......................................................5-77
Cruise Control operation ...............................................5-77
Smart Cruise Control system..............................5-83
Smart Cruise Control speed ..........................................5-85
Smart Cruise Control Vehicle-to-Vehicle
Distance ........................................................................\
.....5-89
Sensor to detect distance to the vehicle ahead .....5-92
To adjust the sensitivity of Smart Cruise Control ..5-94
To convert to Cruise Control mode ............................5-94
Limitations of the system .............................................5-95
Special driving conditions .................................5-100
Hazardous driving conditions ....................................5-100
Rocking the vehicle ......................................................5-100
Smooth cornering .........................................................5-101
Driving at night ..............................................................5-101
Driving in the rain .........................................................5-101
Driving in flooded areas..............................................5-102
Highway driving .............................................................5-102
Winter driving .....................................................5-103
Snow or icy conditions ................................................5-103
Winter Precautions .......................................................5-105
Trailer towing .....................................................5-108
If you decide to pull a trailer?...................................5-109
Trailer towing equipment ............................................5-111
Driving with a trailer ....................................................5-112
Maintenance when towing a trailer .........................5-116
Vehicle weight ....................................................5-117
Overloading ....................................................................5-11\
7

5-105
Driving your vehicle
5
Chain Installation
When installing tyre chains, follow
the manufacturer's instructions and
mount them as tightly possible. Drive
slowly (less than 20 mph (30 km/h))
with chains installed. If you hear the
chains contacting the body or chas-
sis, stop and tighten them. If they still
make contact, slow down until the
noise stops. Remove the tyre chains
as soon as you begin driving on
cleared roads.
When mounting snow chains, park
the vehicle on level ground away
from traffic. Turn on the vehicle
Hazard Warning Flasher and place a
triangular emergency warning device
behind the vehicle (if available).
Always place the vehicle in P (Park),
apply the parking brake and turn off
the engine before installing snow
chains.When using tyre chains:
Wrong size chains or improperly
installed chains can damage
your vehicle's brake lines, sus-
pension, body and wheels.
Use SAE "S" class or wire chains.
If you hear noise caused by chains contacting the body,
retighten the chain to prevent
contact with the vehicle body.
To prevent body damage, retighten the chains after driving
0.3~0.6 miles (0.5~1.0 km).
Do not use tyre chains on vehi- cles equipped with aluminium
wheels. If unavoidable, use a
wire type chain.
Use wire chains less than 12 mm (0.47 in) thick to prevent damage
to the chain's connection.
Winter Precautions
Use high quality ethylene glycol
coolant
Your vehicle is delivered with high
quality ethylene glycol coolant in the
cooling system. It is the only type of
coolant that should be used because
it helps prevent corrosion in the cool-
ing system, lubricates the water
pump and prevents freezing. Be sure
to replace or replenish your coolant
in accordance with the maintenance
schedule in your Service Booklet.
Before winter, have your coolant test-
ed to assure that its freezing point is
sufficient for the temperatures antici-
pated during the winter.
NOTICE

5-116
Maintenance when towing a
trailer
Your vehicle will need service more
often when you regularly pull a trail-
er. Important items to pay particular
attention to include engine oil, auto-
matic transmission fluid, axle lubri-
cant and cooling system fluid. Brake
condition is another important item to
frequently check. If you’re trailering,
it’s a good idea to review these items
before you start your trip. Don’t forget
to also maintain your trailer and tow-
bar. Follow the maintenance sched-
ule that accompanied your trailer and
check it periodically. Preferably, con-
duct the check at the start of each
day’s driving. Most importantly, all
hitch nuts and bolts should be tight.To prevent vehicle damage:
Due to higher load during trailer
usage, overheating might occur
on hot days or during uphill driv-
ing. If the coolant gauge indi-
cates over-heating, switch off
the air conditioner and stop the
vehicle in a safe area to cool
down the engine.
Do not switch off the engine whilst the coolant gauge indi-
cates over-heating.
(Keep the engine idle to cool
down the engine)
When towing check automatic transmission fluid more fre-
quently.
If your vehicle is not equipped with an air conditioner, you
should install a condenser fan
to improve engine performance
when towing a trailer.
NOTICE
Driving your vehicle

7
Maintenance
7
Maintenance
Engine compartment .............................................7-3
Maintenance services ...........................................7-5
Owner's responsibility ......................................................7-5
Owner maintenance precautions ..................................7-5
Owner maintenance ...............................................7-6
How to Disconnect the (-) Cable for
Regular Maintenance .......................................................7-6
Owner maintenance schedule ........................................7-7
Scheduled maintenance services.........................7-8
Explanation of scheduled maintenance items ...7-9
Engine oil ..............................................................7-11
Checking the engine oil level .......................................7-11
Checking the engine oil and filter ..............................7-12
Engine coolant/inverter coolant .......................7-13
Checking the coolant level ...........................................7-13
Changing coolant........................................................\
.....7-16
Hybrid starter & generator (HSG) belt.............7-17
Checking the hybrid starter &
generator (HSG) belt ......................................................7-17
Brake fluid ............................................................7-17
Checking the brake fluid level .....................................7-17
Washer fluid .........................................................7-18
Checking the washer fluid level ..................................7-18
Parking brake .......................................................7-19
Checking the parking brake .........................................7-19
Air cleaner ............................................................7-19
Filter replacement ...........................................................7-19
Climate control air filter .....................................7-21
Filter inspection ...............................................................7-21
Wiper blades .........................................................7-23
Blade inspection ..............................................................7-23
Blade replacement ..........................................................7-23
Battery (12 volt, Plug-in hybrid vehicle) .........7-25
For best battery service................................................7-26
Battery capacity label ....................................................7-27
Battery recharging .........................................................7-27
Reset features .................................................................7-28
7

Tyres and wheels .................................................7-29
Tyre care ........................................................................\
...7-29
Recommended cold tyre inflation pressures ...........7-30
Check tyre inflation pressure ......................................7-31
Tyre rotation ....................................................................7-32\
Wheel alignment and tyre balance.............................7-33
Tyre replacement ............................................................7-33
Wheel replacement .........................................................7-34
Tyre traction ...................................................................7-34
Tyre maintenance ...........................................................7-35
Tyre sidewall labeling .....................................................7-35
Low aspect ratio tyres...................................................7-39
Fuses ......................................................................7-\
40
Instrument panel fuse replacement ...........................7-41
Engine compartment panel fuse replacement.........7-42
Fuse/relay panel description .......................................7-44
Light bulbs.............................................................7-54
Headlamp, position lamp, turn signal lamp
bulb replacement .............................................................7-55
Headlamp aiming .............................................................7-59
Daytime running lamp ....................................................7-62
Side repeater lamp replacement .................................7-62
Rear combination lamp bulb replacement ................7-63
Rear fog lamp ..................................................................7-68
High mounted stop lamp ...............................................7-68
License plate light bulb replacement .........................7-68
Interior light bulb replacement ....................................7-68
Appearance care ..................................................7-70
Exterior care ....................................................................7-70\
Interior care......................................................................7-\
75
Emission control system .....................................7-77
Crankcase emission control system ...........................7-78
Evaporative emission control system.........................7-78
Exhaust emission control system ...............................7-78
Procedure for entering forced
engine activation mode .......................................7-81

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7
Maintenance
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C O
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M P
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M E
EN
N T
T

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. Windscreen washer fluid reservoir
9. Fuse box
OAE076001
The actual engine compartment in the vehicle may differ from the illustration.
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Hybrid vehicle