2023 HYUNDAI TUCSON HYBRID coolant

01
1-59
Refill inverter coolant
OOSHQ019012LOOSHQ019012L
This message is displayed when the
inverter coolant is nearly empty.
You should refill the inverter coolant.
Park with engine On to charge
battery
OOSHQ019013LOOSHQ019013L
This message is displayed when the
hybrid battery power (SOC) level is low.
If this occurs, park the vehicle in a safe
location and wait until the hybrid battery
is charged.
Start engine to avoid battery
discharge
OOSHQ019027LOOSHQ019027L
This message is displayed to inform the
driver the 12V battery may be discharged
if the ignition switch is in ON position
(without the
indicator ON).
Set the vehicle to the ready (
) mode
to prevent the 12V battery from being
discharged.

01
1-63
Switching to Hybrid mode to allow
heating or air conditioning (Plug-in
hybrid vehicle)
OAEPHQ049842LOAEPHQ049842L
This message is displayed when the
vehicle automatically switches to
HEV mode to allow heating or air
conditioning. It is when the coolant
temperature is low (below -14°C) and the
driver turns on the heating or cooling
system.
If the coolant temperature gets higher
than -14°C or the driver turns off the
heating or cooling system the vehicle
returns to its default (EV) mode.
Maintaining Hybrid mode to allow
heating or air conditioning (Plug-in
hybrid vehicle)
OAEPHQ049841LOAEPHQ049841L
This message is displayed when the
vehicle maintains the HEV mode to allow
heating or air conditioning. The mode
does not change when the driver presses
the [HEV] button to switch from the HEV
mode to EV mode while the heating and
cooling system is on and the coolant
temperature is below -14°C.
Low/High System Temp. Maintaining
Hybrid mode (Plug-in hybrid vehicle)
OAEPHQ049834LOAEPHQ049834LOAEPHQ049835LOAEPHQ049835L
This message is displayed when the
temperature of the high-voltage
(hybrid) battery is too low or too high.
This warning message is to protect the
battery and the hybrid system.

2-7
02
„Smartstream G 1.6 T-GDi HEV
The actual engine compartment in the vehicle may differ from the illustration.
ONX4PH091001N
1. ECU
2. Engine coolant reservoir .......................9-18
3. Engine coolant reservoir cap ................9-18
4. Inverter coolant reservoir......................9-18
5. Brake fluid reservoir .............................. 9-21
6. Air cleaner ............................................. 9-237. Engine oil filler cap ................................ 9-16
8. Engine oil dipstick ................................. 9-16
9. Windshield washer fluid reservoir ....... 9-22
10. Fuse box ................................................ 9-54
11. Inverter coolant reservoir cap ..............9-18
(1*,1(&203$570(17

Vehicle Information, Consumer Information and Reporting Safety Defects2-18
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.
These lubricants and fluids are recommended for use in your vehicle.
Lubricant VolumeClassification
Engine oil
*1 *2
(drain and refill) Recommends
86TW
b SAE 0W-20, API SN PLUS/SP or
ILSAC GF-6
Automatic transmission fluid
86TW
bSK ATF SP4M-1, MICHANG ATF
SP4M-1, S-OIL ATF SP4M-1,
Hyundai Genuine ATF SP4M-1
Coolant 86TW
bMixture of antifreeze and water
(Phosphate-based Ethylene glycol
coolant for aluminum radiator)
Inverter Coolant HEV
86TW
b
PHEV 86TW
b Contact an authorized Hyundai
dealer/service partner
Rear differential oil (AWD) 0.56 ~ 0.67 US qt.
a
b HYPOID GEAR OIL API GL-5, SAE
75W/85 (SK HCT-5 GEAR OIL
75W/85 or EQUIVALENT)
Transfer case oil (AWD) 0.65 ~ 0.71 US qt.
a
b
Brake fluid
*3As required SAE J1704 DOT-4 LV, FMVSS 116
DOT-4, ISO4925 CLASS-6
Fuel HEV
86JDO
b
Refer to “Fuel requirements” in
chapter 1.
PHEV 86JDO
b
*1 : Refer to the recommended SAE viscosity numbers on the next page.
*2 : Requires grade engine oil. If a lower grade
engine oil (mineral oil including Semi-synthetic) is used, then the engine oil and engine
oil filter must be replaced as indicated severe maintenance condition.
*3 : To maintain the best braking performance and ABS/ESC performance, use genuine brake
fluid that conform to specifications.
5(&200(1'('/8%5,&$176$1'&$3$&,7,(6

4
4. Instrument Cluster
Check Hybrid system. Do not start engine ............................................................ 4-27
Stop safely and check power supply ......................................................................4-28
Check virtual engine sound system........................................................................\
4-28
Refill inverter coolant ........................................................................\
......................4-28
Park with engine On to charge battery ..................................................................4-28
Start engine to avoid battery discharge .................................................................4-28
Check regenerative brakes......................................................................\
................4-29
Check virtual engine sound system........................................................................\
4-29
Unplug vehicle to start (Plug-in hybrid vehicle) ....................................................4-29
Remaining time (Plug-in hybrid vehicle) ................................................................4-29
Wait until fuel door unlocks (Plug-in hybrid vehicle) ........................................... 4-30
Check fuel door (Plug-in hybrid vehicle) ............................................................... 4-30
Fuel door open (Plug-in hybrid vehicle) ................................................................. 4-31
Shift to P to charge (Plug-in hybrid vehicle) .......................................................... 4-31
Switching to Hybrid mode to allow heating or air conditioning
(Plug-in hybrid vehicle) ........................................................................\
................... 4-31
Maintaining Hybrid mode to allow heating or air conditioning
(Plug-in hybrid vehicle) ........................................................................\
................... 4-32
Low/High System Temp. Maintaining Hybrid mode (Plug-in hybrid vehicle) ..... 4-32
Low/High System Temp. Switching to Hybrid mode (Plug-in hybrid vehicle) .... 4-32
Switching to Hybrid mode to lubricate engine (Plug-in hybrid vehicle) ..............4-33
Maintaining Hybrid mode to protect engine (Plug-in hybrid vehicle) .................4-33
Exit SPORT mode to switch to EV (Plug-in hybrid vehicle) ...................................4-33
LCD Display ........................................................................\
............................. 4-34LCD Display Control ........................................................................\
...........................4-34
View Modes ........................................................................\
........................................ 4-35Trip computer mode ........................................................................\
........................4-36
Turn By Turn (TBT) mode ........................................................................\
.................4-36
Driving Assist mode ........................................................................\
.........................4-36
Master warning group ........................................................................\
..................... 4-37
User settings mode ........................................................................\
..........................4-39
Trip Computer (4.2-inch) - Hybrid Vehicle ............................................................... 4-46 Trip modes ........................................................................\
....................................... 4-46
Trip Computer (10.25-inch) - Hybrid Vehicle ........................................................... 4-49 Trip modes ........................................................................\
....................................... 4-49
Trip Computer (4.2-inch) - Plug-in Hybrid Vehicle ...................................................4-52 Trip modes ........................................................................\
........................................4-52
Trip Computer (10.25-inch) - Plug-in Hybrid Vehicle ...............................................4-55 Trip modes ........................................................................\
........................................4-55
Vehicle Settings (Infotainment System) ........................................................ 4-58Setting Your Vehicle ........................................................................\
.......................... 4-58

Instrument Cluster4-28
Stop safely and check power supply
This message is displayed when a failure
occurs in the power supply system.
If this occurs, park the vehicle in a safe
location and tow your vehicle to the
nearest authorized HYUNDAI dealer and
have the vehicle inspected.
Check virtual engine sound system
This message is displayed when there is
a problem with the Virtual Engine Sound
System (VESS).
If this occurs, have the vehicle inspected
by an authorized HYUNDAI dealer.
Refill inverter coolant
This message is displayed when the
inverter coolant is nearly empty.
You should refill the inverter coolant.
Park with engine On to charge
battery
This message is displayed when the
hybrid battery power (SOC) level is low.
If this occurs, park the vehicle in a safe
location and wait until the hybrid battery
is charged.
Start engine to avoid battery
discharge
This message is displayed to inform the
driver the 12V battery may be discharged
if the ignition switch is in ON position
(without the
indicator ON).
Set the vehicle to the ready (
) mode
to prevent the 12V battery from being
discharged.

04
4-31
Fuel door open (Plug-in hybrid
vehicle)
OAEPHQ049832L
This message is displayed when thefuel
filler door opens after the fuel tank
is depressurized. If this message is
displayed, you can refuel the fuel tank.
Shift to P to charge (Plug-in hybrid
vehicle)
OAEPHQ049833L
This message is displayed when the
charging connector is plugged with the
shift button in R (Reverse), N (Neutral)
or D (Drive). Move the shift button to P
(Park) and re-start the charging process.
Switching to Hybrid mode to allow
heating or air conditioning (Plug-in
hybrid vehicle)
OAEPHQ049842L
This message is displayed when the
vehicle automatically switches to
HEV mode to allow heating or air
conditioning. It is when the coolant
temperature is low (below -14°C) and the
driver turns on the heating or cooling
system.
If the coolant temperature gets higher
than -14°C or the driver turns off the
heating or cooling system the vehicle
returns to its default (EV) mode.

Instrument Cluster4-32
Maintaining Hybrid mode to allow
heating or air conditioning (Plug-in
hybrid vehicle)
OAEPHQ049841L
This message is displayed when the
vehicle maintains the HEV mode to allow
heating or air conditioning. The mode
does not change when the driver presses
the [HEV] button to switch from the HEV
mode to EV mode while the heating and
cooling system is on and the coolant
temperature is below -14°C.
Low/High System Temp. Maintaining
Hybrid mode (Plug-in hybrid vehicle)
OAEPHQ049834LOAEPHQ049835L
This message is displayed when the
temperature of the high-voltage
(hybrid) battery is too low or too high.
This warning message is to protect the
battery and the hybrid system.
Low/High System Temp. Switching
to Hybrid mode (Plug-in hybrid
vehicle)
OAEPHQ049836LOAEPHQ049837L
This message is displayed when the
temperature of the high-voltage (hybrid)
battery is too low or high. This warning
message is to protect the battery and the
hybrid system.