Adding the urea solution
To refill the urea solution from the
refill hose
1. Press the ignition switch to theOFF position.
2. Turn the urea solution tank cap in a counterclockwise direction to
open it.
3. Fully insert the refill hose to fully add the ISO 22241-specified urea
solution 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.
❈ 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-
rized 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. Fully add the ISO 22241-specified urea solution 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.
7-90
Maintenance
OOS048415 
❈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-
rized 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 5,600 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.
7-91
7
Maintenance
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.
 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.WARNING