2018 Hyundai Ioniq Plug-in Hybrid brake fluid

7-22
Maintenance
Checking the Hybrid Starter &
Generator (HSG) Belt
Have the hybrid starter & generator
(HSG) belt inspected or replaced
according to the Maintenance
Schedule in this chapter by an
authorized HYUNDAI dealer.
Checking the Brake Fluid Level
Check the fluid level in the reservoir
periodically. The fluid level should be
between MAX and MIN marks on the
side of the reservoir.
Before removing the reservoir cap
and adding brake fluid, clean the
area around the reservoir cap thor-
oughly to prevent brake fluid contam-
ination.If the level is low, add the specified
brake fluid to the MAX level. The level
will fall with accumulated mileage.
This is a normal condition associated
with the wear of the brake linings. If
the fluid level is excessively low, have
the brake system checked by an
authorized HYUNDAI dealer.
Turn the vehicle off while you
inspect the engine or hybrid
starter & generator(HSG) belt.
Otherwise it may result in
serious injury.
Keep hands, clothing etc.
away from the hybrid starter &
generator (HSG) belt.
WARNING
When the HSG belt is worn out
or damaged, replace the belt.
Otherwise, it may cause engine
overheating or battery dis-
charge.
CAUTION
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If the brake system requires fre-
quent additions of fluid this
could indicate a leak in the
brake system. Have the vehicle
inspected by an authorized
HYUNDAI dealer.
WARNING
Do not allow brake fluid to come
in contact with your eyes. If
brake fluid comes in contact
with your eyes, flush your eyes
with clean water for at least 15
minutes and get immediate
medical attention.
WARNING

7-23
7
Maintenance
Do not allow brake fluid to con-tact the vehicle’s body paint, as
paint damage will result.
Brake fluid, which has been exposed to open air for an
extended time should NEVER be
used as its quality cannot be
guaranteed. It should be dis-
posed of properly.
Do not use the wrong kind of brake fluid. A few drops of miner-
al based oil, such as engine oil, in
your brake system can damage
brake system parts.
Information
Use only the specified brake fluid
(refer to "Recommended Lubricants
and Capacities" in chapter 8).
Checking the Washer Fluid
Level
Check the fluid level in the washer
fluid reservoir and add fluid if neces-
sary. Plain water may be used if
washer fluid is not available.
However, use washer solvent with
antifreeze characteristics in cold cli-
mates to prevent freezing.
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NOTICE
W W A
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To prevent serious injury or
death, take the following safety
precautions when using washer
fluid:
Do not use engine coolant or
antifreeze in the washer fluid
reservoir.
Engine coolant can severely
obscure visibility when
sprayed on the windshield and
may cause loss of vehicle con-
trol resulting in an accident or
damage to paint and body trim.
Do not allow sparks or flames
to contact the washer fluid or
the washer fluid reservoir.
Washer fluid may contain alco-
hol and can be flammable.
Do not drink washer fluid and
avoid contact with skin.
Washer fluid is harmful to
humans and animals.
Keep washer fluid away from
children and animals.
WARNING

8-7
88
Specifications, Consumer information and Reporting safety defects
To help achieve proper engine and powertrain performance and durability, use only lubricants of the proper quality.
The correct lubricants also help promote engine efficiency that results in improved fuel economy.
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LubricantVolume Classification
Engine oil *
1*2(drain and refill)
Recommends
4.0 US qt. (3.8 l)0W-20 (SAE Viscosity Number),
API SN (or above) or ACEA C2 *3
Dual clutch transmission fluid1.69 ~ 1.79 US qt. (1.6 ~ 1.7
l)
HK SYN DCTF 70W (SK)
SPIRAX S6 GHME 70W DCTF (H.K.SHELL)
GS DCTF HD 70W (GS CALTEX)
(API GL-4, SAE 70W)
Engine clutch actuator fluid0.08 ~ 0.13 US qt. (80 ~ 120 cc)FMVSS116 DOT3
Engine coolant7.07 US qt. (6.7 l)Mixture of antifreeze and water
(Phosphate-based Ethylene glycol coolant for
aluminum radiator)
Inverter coolant3.38 US qt. (3.2 l)
Brake fluid0.74~0.85 US qt. (0.7 ~ 0.8 l)FMVSS116 DOT-3 or DOT-4
FuelHybrid vehicle11.9 US gal. (45 l)Refer to "Fuel requirements" in the Foreword
chapter.
Plug-in hybrid vehicle11.4 US gal. (43 l)
*1: Refer to the recommended SAE viscosity numbers on the next page.
*2: Engine oils labeled Energy Conserving Oil are now available. Along with other additional benefits, they contribute to fuel econ -
omy by reducing the amount of fuel necessary to overcome engine friction. Often, these improvements are difficult to measure
in everyday driving, but in a year's time, they can offer significant cost and energy savings.
*
3: If the ACEA C2 engine oil is not available in your country, you are able to use ILSAC GF-3 (or above) or ACEA A3 (or above).

I-3
Automatic ventilation ...................................................3-145
Autonomous Emergency Braking (AEB) system...........5-43
AUX, USB and iPod
®Port ...............................................4-2
Batterty (12 volt, Plug-in hybrid vehicle).......................7-31
Battery cooling duct........................................................2-22
Battery saver function ...................................................3-118
Before driving ...................................................................5-4
Blind Spot Detection (BSD) system ...............................5-34
Blind spot mirror.............................................................3-34
Blue Link
®center ...........................................................3-19
Bluetooth®Wireless Technology hands-free ....................4-4
Bottle holder .................................................................3-148
Brake fluid ......................................................................7-\
22
Brake system ...................................................................5-23 Anti-lock Brake System (ABS)..................................5-26
Disc brakes wear indicator .........................................5-24
Electronic Stability Control (ESC).............................5-28
Good braking practices ..............................................5-33
Hill-start Assist Control (HAC) .................................5-33
Parking brake..............................................................5-24
Power brakes ..............................................................5-23
Vehicle Stability Management (VSM) .......................5-31 Bulb replacement ............................................................7-55
Daytime Running Lamp (DRL) .................................7-60
Front parking lamp .....................................................7-55
Front turn signal lamp ................................................7-55
Headlamp....................................................................7-55\
High mounted stop lamp ............................................7-64
Interior light bulb .......................................................7-65
License plate light bulb ..............................................7-65
Rear combination light bulb .......................................7-61
Side marker ................................................................7-55
Side repeater lamp ......................................................7-61
Bulb wattage .....................................................................8-3\
Button start/stop, see engine start/stop button ..................5-6
Camera (Rear view) ......................................................3-125
Capacities (Lubricants) .....................................................8-7
Care Exterior care ...............................................................7-67
Interior care ................................................................7-71
Tire care ......................................................................7-\
34
Cargo security screen ....................................................3-154
Center console storage ..................................................3-146
Central door lock switch .................................................3-11
Certification label location ...............................................8-9
Chains Tire chains ..................................................................5-89
Checking tire inflation pressure ......................................7-36
I
Index
B
C

I-5
Dual clutch transmission.................................................5-12DCT warning messages..............................................5-14
ECO mode ..................................................................5-17
Good driving practices ...............................................5-20
Manual shift mode......................................................5-18
Paddle shifter ..............................................................5-19
Shift lever position .....................................................5-16
Shift lock system ........................................................5-18
SPORT mode ..............................................................5-17
Dual clutch transmission shift indicator .........................3-61 Shift indicator pop-up ................................................3-62
Dynamic Bending Light (DBL) ....................................3-119
Easy access function .......................................................3-15
ECO mode.......................................................................5\
-17
Electric Chromic Mirror (ECM) with HomeLink
®system,
compass and Blue Link®................................................3-19
Electric Power Steering (EPS) ........................................3-16
Electronic Stability Control (ESC) .................................5-28
Emergency locking retractor...........................................2-26
Emergency towing ..........................................................6-42
Emission control system .................................................7-74 Crankcase emission control system ...........................7-74
Evaporative emission control System ........................7-74
Exhaust emission control system ...............................7-75
Engine compartment .........................................................7-3
Engine compartment panel fuse replacement .................7-51 Engine coolant ................................................................7-18
Engine number location ..................................................8-10
Engine oil ........................................................................\
7-16
Engine specification..........................................................8-2
Engine Start/Stop button ...................................................5-6
Evaporative emission control System.............................7-74
Exhaust emission control system....................................7-75
Explanation of scheduled maintenance items.................7-14
Exterior care....................................................................7-67\
Flat tire
Spare tire ....................................................................6-20\
Tire Mobility Kit (TMK) ..................................6-25, 6-33
Floor mat anchor(s).......................................................3-153
Fluid Brake fluid ..................................................................7-22
Washer fluid ...............................................................7-23
Front seat adjustment ........................................................2-6 Manual adjustment .......................................................2-7
Power adjustment .........................................................2-9
Seatback pocket ..........................................................2-12
Front seat head restraints Adjusting the height up and down .............................2-17
Removal/Reinstallation ..............................................2-18
Fuel filler door Hybrid vehicle ............................................................3-48
Plug-in hybrid vehicle ................................................3-51
I
Index
E
F

I-9
Low pressure ..............................................................3-76
Low washer fluid........................................................3-76
Low/High system temp. maintaining hybrid mode....3-85
Low/High system temp. switching to hybrid mode ...3-86
Maintaining Hybrid mode to continue heating or air conditioning .......................................................3-85
Maintaining Hybrid mode to protect engine ..............3-86
Park with engine on to charge battery........................3-80
Press brake pedal to start vehicle ...............................3-73
Press START button again .........................................3-73
Press START button while turning wheel ..................3-73
Press START button with key ....................................3-74
Rear parking assist system malfunction .....................3-78
Refill inverter coolant ................................................3-80
Refuel to prevent hybrid battery damage ...................3-80
Remaining time ..........................................................3-82
Shift to P.....................................................................3-7\
3
Shift to P to charge .....................................................3-84
Shift to P to start vehicle ............................................3-74
Stop vehicle and check brakes ...................................3-81
Stop vehicle and check power supply ........................3-79
Stop vehicle and check regen. brakes ........................3-81
Stop vehicle to charge battery ....................................3-80
Sunroof open ..............................................................3-75
Switching to Hybrid mode to allow heating or air conditioning .......................................................3-85
Switching to Hybrid mode to lubricate engine ..........3-86 Turn on FUSE SWITCH/
Turn FUSE SWITCH On ........................................3-76
Unplug vehicle to start ...............................................3-82
Wait until fuel door opens ..........................................3-82
Wiper ........................................................................\
..3-77
Liftgate ........................................................................\
....3-46
Light bulbs ......................................................................7-\
55
Lighting ........................................................................\
.3-115 Auto light position ....................................................3-115
Battery saver function ..............................................3-118
Daytime Running Light (DRL) ................................3-115
Dynamic Bending Light (DBL) ...............................3-119
Headlamp delay function..........................................3-118
Headlamp position ....................................................3-116
High beam operation ................................................3-117
Lane change signals..................................................3-117
One-touch turn signal function.................................3-118
Parking lamp position...............................................3-116
Turn signals ..............................................................3-117
Lubricants and capacities..................................................8-7
Luggage compartment lamp .........................................3-121
Luggage volume ...............................................................8-6
I
Index

I-15
Low tire pressure warning light .................................3-68
Malfunction Indicator Lamp (MIL) ...........................3-66
Master warning light ..................................................3-68
Parking brake & brake fluid warning light ................3-63
Ready indicator ..........................................................3-62
Regenerative brake warning light ..............................3-64
Seat belt warning light ...............................................3-63
Service warning light .................................................3-62
SPORT mode indicator light ......................................3-72
Turn signal indicator light ..........................................3-70
Warning light ..................................................................3-62
Washer fluid ....................................................................7-23\
Welcome system ...........................................................3-122 Door handle lamp .....................................................3-122
Headlamp and parking lamp ....................................3-122
Interior lamp .............................................................3-122
Wheel alignment and tire balance ..................................7-38
Wheel replacement .........................................................7-39
Windows ........................................................................\
.3-37 Auto up/down window ...............................................3-39
Automatic reverse ......................................................3-39
Power window lock switch ........................................3-40
Resetting the windows ...............................................3-39
Windshield defrosting and defogging ...........................3-141
Windshield washers ......................................................3-124
Windshield wipers........................................................\
.3-123 Winter driving .................................................................5-89
Snow tires ...................................................................5-89
Tire chains ..................................................................5-89
Winter Precautions ..........................................................5-91
Wiper blade replacement ................................................7-28
Wipers and washers ......................................................3-123 Windshield washers ..................................................3-124
Windshield wipers ....................................................3-123
Wireless cellular phone charging system......................3-151
I
Index