2019 HYUNDAI SONATA HYBRID heater

7-22
Maintenance
Inverter coolant
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 the MAX and the 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 to bring
the level to the MAX mark, but do not
overfill. If frequent additions are
required, we recommend that you
see an authorized HYUNDAI dealer
for a cooling system inspection.
Recommended coolant
When adding coolant, use onlydeionized water, distilled water or
soft water for your vehicle and
never mix hard water in the coolant
filled at the factory.
An improper coolant mixture can result in severe malfunction or
engine/ hybrid system damage.
The engine in your vehicle has alu- minum engine parts and must be
protected by an phosphate-based
ethylene glycol coolant to preventcorrosion and freezing.
Do not use alcohol or methanol coolant or mix them with the spec-ified coolant.
Do not use a solution that contains more than 60% antifreeze or less
than 35% antifreeze, which would
reduce the effectiveness of thesolution. For mixing percentage, refer to the
following table:
Information
If in doubt about the mix ratio, a 50%
water and 50% antifreeze mix is the
easiest to mix together as it will be the
same quantity of each. It is suitable to
use for most temperature ranges of -
35°C (-31°F) and higher.
i
Ambient
Temperature Mixture Percentage
(volume)
Antifreeze Water
-15°C (5°F) 35 65
-25°C (-13°F) 40 60
-35°C (-31°F) 50 50
-45°C (-49°F) 60 40
OLFH074006

7-57
7
Maintenance
Fuse NameFuse ratingCircuit Protected
SAFETY POWERWINDOW LH 25ADriver Safety Power Window Module
P/SEATPASS 30APassenger Seat Manual Switch
P/WDW LH 20APower Window Main Switch, Rear Power Window Module LH
P/WDW RH 25APower Window Main Switch, Rear Power Window Module RH,
Passenger Door Module, Passenger Power Window Switch
DR LOCK 20ADoor Lock Relay, Door Unlock Relay
S/HEATER FRT25AFront Air Ventilation Seat Module, Front Seat Warmer Module
BRAKE
SWITCH 10AStop Lamp Switch, Smart Key Control Module
MODULE 8 7.5ABCM, Smart Key Control Module
SAFETY POWER WINDOW RH 25APassenger Safety Power Window Module
BATTERY
MANAGEMENT10ABMS Control Module
SMART KEY15ASmart Key Control Module
TRUNK 10ATrunk Lid Relay, Fuel Filler Door & Trunk Lid Switch
Driver's side fuse panel

7-58
Maintenance
Fuse NameFuse ratingCircuit Protected
MODULE 7 10ADriver/Passenger Door Module, Electric Parking Brake Module, AMP, Digital Clock, Blind Spot
Detection Rader LH/RH, Rear Parking Assist Sensor LH/RH/(Center),
Rear Parking Assist Sensor LH/RH
INTERIOR LAMP10AGlove Box Lamp, Driver/Passenger Door Lamp, Front Vanity Lamp Switch LH/RH,
Overhead Console Lamp, Room Lamp, Rear Personal Lamp LH/RH, Tru nk Room Lamp
MEMORY 27.5AElectro Chromic Mirror
P/SEAT
DRV 30ADriver Seat Manual Switch, Driver IMS Module
CURTAIN 10ARear Curtain Module
CLUSTER 10AInstrument Cluster
MODULE 4 10ASmart Key Control Module
MULTI
MEDIA15AAudio, A/V & Navigation Head Unit
MEMORY 1 10A
Driver/passenger Door Module, Instrument Cluster, Digital Clock,
Driver IMS Module, Auto Light & Photo Sensor, A/C Control Module,
Rear Curtain Module, Data Link Connector, BCM,
Tire Pressure Monitoring Module, Wireless Charger
S/HEATER RR 25ARear Seat Warmer Module
SUN ROOF 2 20APanorama Sunroof Motor
Driver's side fuse panel

7-64
Maintenance
Engine compartment main fuse panel
Fuse No.Fuse NameFuse RatingCircuit Protected
MULTI FUSE(TYPE B)
2B+50AIGPM (IPS1 (4CH), IPS4 (1CH), IPS5 (4CH), IPS6 (2CH), IPS7 (1CH), Fuse - AMP)
1B+60AIGPM (Fuse - P/SEAT DRV/P/SEAT PASS/S/HEATER RR/SUNROOF1/SUNROOF2/
SAFETY POWER WINDOW LH/ SAFETY POWER WINDOW RH/TRUNK/CURTAIN/
MODULE1/Power Window Relay)
COOLING
FA N60ACooling Fan Relay
FUSE
FUEL PUMP20AFuel Pump Relay
1OPCU20AElectric Oil Pump Unit
1
HEV ECU10AHPCU
H/LAMP HI20AHead Lamp High Relay
4B+40AIGPM (Leak Current Autocut Device Fuse - INTERIOR LAMP/MEMORY1/MEMORY2/
MULTI MEDIA, 40A Fuse -BRAKE SWITCH/SMART KEY/S/HEATER FRT/
BATTERY MANAGEMENT/DR LOCK)
2EPB30AElectric Parking Brake Module
1
EPB30AElectric Parking Brake Module