2019 Hyundai Santa Fe ignition

7-85
7
Maintenance
The Diesel Particulate Filter (DPF)
Lamp stops illuminating, when the
driving speed exceeds 37 mph (60
km/h), or when the engine rpm is
between 1,500 and 2,500 with the
gear in the 2nd position or above for
approximately 25 minutes.
When the DPF Lamp continuously
blinks or the warning message “Check
exhaust system” illuminates in the
above cases, we recommend that you
have the DPF system checked by a
HYUNDAI authorised repairer.
When the vehicle is continuously driv-
en with the DPF Lamp flashing for an
extended period of time, it may dam-
age the DPF system and lower the
fuel economy.Lean NOx Trap (if equipped)
The Lean NOx Trap (LNT) system
removes the nitrogen oxide from the
exhaust gas. A smell can occur in the
exhaust gas depending on the quali-
ty of the fuel, and it can degrade NOx
reduction performance. Please use
the regulated automotive diesel fuel.
Selective Catalytic Reduction
(if equipped)
The Selective Catalytic Reduction
(SCR) system is to catalytically con-
vert NOx to Nitrogen and Water by
using the reduction agent, the urea
solution.
Urea gauge (if equipped)
The urea solution gauge indicates
the approximate amount of remain-
ing urea solution inside the urea
solution tank.
❈The urea gauge image pops up,
whenever the ignition switch is
pressed to the ON position.
OTM048163L

7-86
Maintenance
The lack warning messages of Urea
appear below Urea 5.4 litre. When
the warning message "Low urea" is
displayed with SCR warning lamp
( ), the urea tank needs to be
refilled. If not refilled for a consider-
able mileage, visual warning system
will escalate the intensity by display-
ing the message "Refill urea" with
SCR warning lamp ( ).
In this case, the tank soon needs to
be refilled. The remaining urea in the
tank approaches to too low level the
warning message "Refill urea in
000km or vehicle will not start" with
SCR warning lamp ( ). "xxx mile
(km)" represents the remaining trav-
el distance allowed, so do not contin-
ue driving to the limit of the remain-
ing travel distance without refilling.
Otherwise, the vehicle can't be
restarted once the engine is turned
off by ignition key. Based on the driv-
ing pattern, environmental condition
and road profile, the deducted
remaining mileage may differ from
the actual travel distance.When "Low urea" or "Refill urea"
message is displayed, add at least 4
litres of urea. When "Refill urea in
000km or vehicle will not start" mes-
sage is displayed, fill up urea at least
6 litres. When "Refill urea tank
Otherwise vehicle will not start" mes-
sage is displayed with SCR warning
lamp ( ), the vehicle can't be
restarted once the engine is turned
off by ignition key. For the above
cases, full replenishment is always
recommended.
OTM078072R/OTM078075R/OTM078074L/OTM078073


7-87
7
Maintenance
Upon detecting a malfunctionDriving 50 km after detecting
a malfunction
Urea system failure
(= no fuel injection)
Incorrect urea detected
(= abnormal urea)
Abnormal urea-solution
consumption
(= post treatment failure)
Malfunction with the SCR system (if equipped)
SCR system has malfunction due to disconnected electrical components, incorrect urea and so on.
"xxx km(mile)" represents the remaining travel distance allowed, so do not continue driving to the limit of the remain-
ing travel distance without fixing the source of the malfunction. Otherwise, the vehicle can't be restarted once the
engine is turned off by ignition key. In this case, we recommend that the system be inspected by a HYUNDAI autho-
rised repairer.

7-89
7
Maintenance
Adding the urea solution
To refill the urea solution from
the refill hose
1. Press the ignition switch to the
OFF position.
2. Turn the urea solution tank cap in
a counterclockwise direction to
open it.
3. Fully insert the refill hose to add
the ISO 22241-specified urea
solution over 5 litres or above the
mark on the urea solution tank.
❈When "Refill Urea tank or vehicle
will not start" message is dis-
played, fill up urea at least 6 litres.❈Pay the great caution not to add
the urea solution into the fuel
tank. If not, it surely applies
adverse impact on the vehicle
performance, causing various
malfunctions.
❈Never use the urea solution mix-
ture with additives or water. It
may allow foreign substances to
enter the urea solution tank. If
so, it surely applies adverse
impact on the vehicle perform-
ance, causing various malfunc-
tions.
❈Use only the ISO 22241-speci-
fied urea solution. Any unautho-
rised urea solution surely
applies adverse impacts on the
vehicle performance, causing
various malfunctions.
4. Turn the urea solution tank cap in
a clockwise direction to securely
close it.
To refill the urea solution from
the refill bottle
1. Press the ignition switch to the
OFF position
2. Turn the urea solution tank cap in
a counterclockwise direction to
open it.
3. Add the ISO 22241-specified urea
solution over 5 litres or above the
mark on the urea solution tank.
❈Pay the great caution not to add
the urea solution into the fuel
tank. If not, it surely applies
adverse impact on the vehicle
performance, causing various
malfunctions.
❈Pay the great caution not to
over-fill the (completely) fulfilled
urea solution tank by force whilst
refilling the urea solution from
the refill bottle. The over-filled
urea solution tank will be
expanded when it becomes
frozen and this can cause a seri-
ous malfunction of the urea solu-
tion tank or urea solution sys-
tem.
OTM048419

7-90
Maintenance
❈Never use the urea solution mix-
ture with additives or water. It
may allow foreign substances to
enter the urea solution tank. If
so, it surely applies adverse
impact on the vehicle perform-
ance, causing various malfunc-
tions.
❈Use only the ISO 22241-speci-
fied urea solution. Any unautho-
rised urea solution surely
applies adverse impacts on the
vehicle performance, causing
various malfunctions.
4. Turn the urea solution tank cap in
a clockwise direction to securely
close it.Adding the urea solution: Every
approximately 3,700 miles (6,000
km) (The urea solution consumption
is dependent on the road profile,
driving pattern and environmental
condition)
❈It takes some time to update the
cluster gauges after the UREA
injection.
•Do not apply any external
impact on the DPF system. It
may damage the catalyst,
which is equipped inside the
DPF system.
•Do not arbitrarily modify or
manipulate the DPF system
by redirecting or lengthen the
exhaust pipe. It may adversely
impact the DPF system.
•Avoid contact with the
drained water from the
exhaust pipe. The water is
slightly acid and harmful to
skin. If contacted, thoroughly
wash it.
WARNING
•Any arbitrary manipulation or
modification of the DPF sys-
tem may cause a system mal-
function. The DPF system is
controlled by the complex
device.
•Wait for the DPF system to
cool down before the mainte-
nance service, as it is hot due
to the heat generation.
Otherwise, it may case a skin
burn.
•Add only the specified urea
solution, when your vehicle is
equipped with the urea solu-
tion system.
•The urea solution system (i.e.
urea solution nozzle, urea
solution pump, and DCU)
operates for approximately 2
minutes more to eliminate the
remaining urea solution
inside, even after the ignition
switch is pressed to the OFF
position. Before the mainte-
nance service, make sure that
the urea solution system is
completely turned OFF.