ECU HYUNDAI SANTA FE 2023 Workshop Manual

Maintenance9-20
Information
The coolant level is influenced by the
engine temperature. Before checking or
refilling the coolant, turn the engine off.
WARNING
The electric motor for the cooling fan
may continue to operate or start up
when the engine is not running and
can cause serious injury. Keep hands,
clothing and tools away from the
rotating fan blades of the cooling fan.
Always turn off the vehicle unless the
vehicle has to be inspected with the
engine on. Be cautious as the cooling
fan may operate if the negative (-)
battery terminal is not disconnected.
WARNING
Make sure the coolant cap is properly
closed after refilling coolant. Otherwise
the engine could be overheated while
driving.
„Engine compartment front view
OOSH089010L
1. Check if the coolant cap label is straight in front.
OJX1099046
2. Make sure that the tiny protrusions inside the coolant cap are securely
interlocked.

Maintenance9-30
For best battery service
OTMA090009

[ Keep the battery securely mounted.

[ Keep the battery top clean and dry.

[ Keep the terminals and connections
clean, tight, and coated with
petroleum jelly or terminal grease.

[ Rinse any spilled electrolyte from the
battery immediately with a solution of
water and baking soda.

[ If the vehicle is not going to be used
for an extended time, disconnect the
battery cables.
Information - For batteries
marked with UPPER and
LOWER
OHI078084L
If your vehicle is equipped with a battery
marked with LOWER (MIN) and UPPER
(MAX) on the side, you should check the
electrolyte level.
The electrolyte level should be between
LOWER (MIN) and UPPER (MAX).
When the electrolyte level is low, add
distilled (or de-mineralized) water. (Never
add sulfuric acids or other electrolyte).
Be careful not to spill distilled (or
demineralized) water over the battery
surface or other adjacent components.
Also, do not overfill the battery cells.
If not, it may corrode the battery or other
components. Finally, securely close the
cell cap. However, contact an authorized
HYUNDAI dealer for better battery
service.

09
9-49
Engine compartment panel fuse
replacement
Blade fuse / Cartridge fuse
„Blade type fuse
OTMA090011
„Cartridge type fuse
OTMA090012
1. Turn the vehicle off.
2. Turn all other switches off.
3. Remove the fuse panel cover by pressing the tap and pulling up.
4. Check the removed fuse; replace it if it is blown. To remove or insert the
fuse, use the fuse puller in the engine
compartment fuse panel.
5. Push in a new fuse of the same rating, and make sure it fits tightly in
the clips. If it fits loosely, consult an
authorized HYUNDAI dealer.
NOTICE
After checking the fuse panel in the
engine compartment, securely install
the fuse panel cover. You may hear a
clicking sound if the cover is securely
latched. If it is not securely latched,
electrical failure may occur from water
contact.
Multi fuse
„Multi type
OTMA090013
If the multi fuse or midi fuse is blown,
consult an authorized HYUNDAI dealer.

Maintenance9-56
Engine compartment fuse panel (PCB block)
Fuse Name Fuse
Rating Circuit Protected
IG1 40
A PDM (IG1) Relay
TCU2 10A TCM
SENSOR3 20A Injector #2/#4
SENSOR1 10A Injector #1/#3
ECU3 10A PCM
EOP3 10A [G4KN] Electronic Oil Pump
POWER OUTLET1 20A Luggage Power Outlet
WIPER2 10A IBU, PCM
HORN 15A Horn Relay
ABS4 10A ESC Module
ECU2 20A PCM
SENSOR2 10A[G4KN] Canister Close Valve, Cooling Fan Controller,
Variable Oil Pump Solenoid Valve, Purge Control Solenoid
Valve, Oil Control Valve, Variable Intake Solenoid Valve, A/
CON Relay
[G4KP] Canister Close Valve, Cooling Fan Controller,
Variable Oil Pump Solenoid Valve, Purge Control Solenoid
Valve, Oil Control Valve, RCV Control Solenoid Valve, A/CON
Relay
SENSOR4 15A Oxygen Sensor (Up/Down)
IGN COIL 20A Ignition Coil #1/#2/#3/#4
ACC 20A ICU Junction Block (Fuse - ACC)
POWER
OUTLET2 20A Front Power Outlet
WIPER FRT1 30A Front Wiper Motor, Front Wiper (Low) Relay
E-SHIFTER3 10A SCU
FCA 10A Front Radar Unit
ECU1 15A PCM
A/C1 10A TCM
TCU1 20A PCM
REAR
HEATED2 10A E/R Junction Block (Rear Heated Relay)