Selective Catalytic Reduction
The Selective Catalytic Reduction (SCR) system is to catalytically convert NOx to Nitrogen and Water by using the reduction agent, the urea solution.
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It may be a criminal offence to use a vehicle that does not consume any urea solution.
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Use of, and refilling of, a required urea solution of the correct specifications is mandatory for the vehicle to comply with the certificate of conformity issued for that vehicle type.
Urea solution level gauge
A: Urea Level
The urea solution level gauge indicates the approximate amount of remaining urea solution inside the urea solution tank.
* The urea level gauge image pops up, whenever the ENGINE START/STOP button is ON position.
Low urea solution warning message
A: Low Urea
A: Refill Urea
A: Refill with correct urea in 000km or vehicle will not start
A: Refill urea tank. Otherwise vehicle will not start
The urea solution warning message appears when the vehicle's urea solution reaches certain level. When the warning message
"Low Urea" is displayed with SCR warning lamp (
), the urea solution tank needs to be refilled. If not refilled for a considerable mileage, visual warning system will escalate
the intensity by displaying the message "Refill Urea" with SCR warning lamp ().
In this case, the urea solution tank soon needs to be refilled. The remaining urea solution in the urea solution tank approaches
to too low level the warning message "Refill Urea in 000 km or vehicle will not start" with SCR warning lamp (). "xxx km (mile)" represents the remaining travel distance allowed, so do not continue driving to the limit of the remaining
travel distance without refilling.
Otherwise, the vehicle can't be restarted once the engine is turned off by the ENGINE START/STOP button. Based on the driving 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, a sufficient amount of urea solution must be added. When "Refill Urea in 000 km or vehicle will not start" message is displayed, refill a sufficient amount of urea solution.
When "Refill Urea tank or vehicle will not start" message is displayed with SCR warning lamp (), the vehicle can't be restarted once the engine is turned off by the ENGINE START/STOP button. For the above cases, full
replenishment is always recommended.
Refer to More Details.
Malfunction with the SCR system
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Upon detecting a malfunction |
Driving 50 km after detecting a malfunction |
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Urea solution system failure (= no urea solution injection) |
 A: Incorrect urea detected |
A: Refill with correct urea in 000km or vehicle will not start |
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Incorrect urea solution detected (= abnormal urea solution) |
A: Incorrect urea detected |
 A: Refill with correct urea in 000km or vehicle will not start |
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Abnormal urea-solution consumption (= post treatment failure) |
A: Incorrect urea detected |
A: Refill with correct urea in 000km or vehicle will not start |
SCR system has malfunction due to disconnected electrical components, incorrect urea solution and so on.
"xxx km (mile)" represents the remaining travel distance allowed, so do not continue driving to the limit of the remaining travel distance without fixing the source of the malfunction. Otherwise, the vehicle can't be restarted once the engine is turned off by the ENGINE START/STOP button. In this case, have your vehicle inspected by a professional workshop. Kia recommends that you contact an authorized Kia dealer/service partner.
Clearing the vehicle-restarting restriction
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No restart |
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|---|---|
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Low urea solution level |
A: Refill urea tank. Otherwise vehicle will not start |
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Urea solution system failure (= no urea solution injection) |
 A: Service Urea system in 0km. Otherwise vehicle will not start |
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Incorrect urea solution detected (= abnormal urea solution) |
A: Refill with correct urea in 000km or vehicle will not start |
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Abnormal urea-solution consumption (= post treatment failure) |
A: Service Urea system in 0km. Otherwise vehicle will not start |
Once the inducement system reached to final status and disabled the vehicle restart, it will only be deactivated in case the urea solution tank is replenished or the malfunctions have been rectified. If the vehicle can't be restarted with "Refill Urea tank or vehicle will not start" message, refill a sufficient amount of urea solution, wait for minutes and try vehicle starting again. If vehicle starting is not possible regardless of urea solution level, have your vehicle inspected by a professional workshop. Kia recommends that you contact an authorized Kia dealer/service partner.
Adding urea solution
Refilling urea solution with a refill hose
Operation
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Press the ENGINE START/STOP button to the OFF position.
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Turn the urea solution tank cap in a counterclockwise direction to open it.
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Fully insert the refill hose to add the ISO 22241-specified urea solution. Fill in a sufficient amount of urea solution.
* Pay 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 urea solution mixture 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 performance, causing various malfunctions.
* Use only the ISO 22241-specified urea solution. Any unauthorized urea solution surely applies adverse impacts on the vehicle performance, causing various malfunctions.
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Turn the urea solution tank cap in a clockwise direction to securely close it.
Refer to More Details.
Refilling urea solution with a refill bottle
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Press the ENGINE START/STOP button to the OFF position.
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Turn the urea solution tank cap in a counterclockwise direction to open it.
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Add the ISO 22241-specified urea solution. Fill in a sufficient amount of urea solution.
* Pay 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 great caution not to overfill the (completely) filled urea solution tank by force while refilling urea solution from a refill bottle. An over-filled urea solution tank will be expanded when it becomes frozen and this can cause a serious malfunction of the urea solution tank or urea solution system.
* Never use urea solution mixture 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 performance, causing various malfunctions.
* Use only the ISO 22241-specified urea solution. Any unauthorized urea solution surely applies adverse impacts on the vehicle performance, causing various malfunctions.
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Turn the urea solution tank cap in a clockwise direction to securely close it.
Adding 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 solution injection.
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Do not apply any external impact on the DPF system. It may damage the catalyst, which is equipped inside the DPF system.
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Do not arbitrarily modify or manipulate the DPF system by redirecting or lengthen the exhaust pipe. It may adversely impact the DPF system.
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Avoid contact with drained water from the exhaust pipe. The water is slightly acid and harmful to skin. If contacted, thoroughly wash it.
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Any arbitrary manipulation or modification of the DPF system may cause a system malfunction. The DPF system is controlled by a complex electronic control unit.
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Wait for the DPF system to cool down before the maintenance service, as it is hot due to heat generation. Otherwise, it may cause a skin burn.
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Add only the specified urea solution, when your vehicle is equipped with the urea solution system.
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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 ENGINE START/STOP button is pressed to the OFF position. Before the maintenance service, make sure that the urea solution system is completely turned OFF.
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A urea solution of poor quality or any unauthorized liquids may damage the vehicle components, including the DPF system. Any unverified additives in the urea solution may clog the SCR catalyst and cause other malfunctions, which require the expensive DPF system to be replaced.
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When urea solution comes in contact with the eyes or the skin, you should thoroughly wash the contaminated skin area.
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When you swallow urea solution, thoroughly rinse your mouth and drink a lot of fresh water. Then, immediately consult a doctor.
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When your cloth is contaminated with urea solution, immediately change your cloth.
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When you have an allergic reaction to urea solution, immediately consult a doctor.
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Make sure that urea solution is kept out of reach from children.
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Wipe off any urea solution spillage with water or cloth. When urea solution is crystalized, wipe it off with a sponge or a cloth, which was dampened in cold water.
When urea solution spillage is exposed in air for an extended period of time, it is crystalized in white, damaging the vehicle surface.
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Urea solution is not a fuel additive. Thus, it should not be injected to the fuel tank. Otherwise, it may damage the engine.
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Urea solution is an aqueous solution, which is inflammable, non-toxic, colorless and odorless.
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Store the urea solution tank only in well-ventilated locations. When urea solution is exposed to the hot temperature at approximately 50°C (122°F) for an extended period of time (i.e. under direct sunlight), the chemical decomposition may occur, emitting ammonia vapor.
Storing urea solution
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It is improper to store urea solution in containers made of unsuitable materials like aluminum, copper alloy, non-alloyed still and galvanized steel.
The urea solution dissolves metal materials, severely damaging the exhaust purification system to be non-repairable.
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Store urea solution only in containers made of the following materials.
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DIN EN 10 088-1-/-2-/-3-specified CR-Ni steel, Mo-Cr-Ni steel, Polypropylene and Polyethylene
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Urea solution purity
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The following situations may damage the DPF system.
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Fuels or any unauthorized liquids are added into the urea solution tank.
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Additives are mixed with urea solution.
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Water is added to dilute the urea solution.
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Use only the ISO 22241- or DIN70070-specified urea solution. When any unauthorized urea solution is added to the urea solution tank, have your vehicle inspected by a professional workshop. Kia recommends that you contact an authorized Kia dealer/service partner.
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When any unauthorized impurities enter the urea solution tank, it may lead to the following problems.
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Increased emission
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Malfunction with the DPF system
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Engine failure
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Never add any used urea solution, which is drained from the urea solution tank (i.e. while maintaining the vehicle). Its purity cannot be guaranteed. Always add new urea solution.
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Specification of the standard urea solution |
Liquid such as diesel, petrol and alcohol shall never be used for SCR system. Any fluid other than recommended urea solution (conform to ISO22241 or DIN70070) can damage SCR system hardware and deteriorate vehicle emission. |
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When opening the urea solution tank cap at high outside temperatures, ammonia vapors may escape. Ammonia vapors have a pungent smell and primarily cause irritation of the:
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Skin
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Mucous membranes
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Eyes
You may experience a burning sensation in your eyes, nose and throat, as well as coughing and watering of the eyes. Do not inhale ammonia vapors. Do not allow urea solution to come in direct contact with your skin. It is hazardous to your health. Wash any affected areas off with plenty of clean water. If necessary, consult a doctor.
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When handling with urea solution in closed space, ensure good ventilation. When the bottle of urea solution container is opened, pungent smelling fumes may escape.
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Keep urea solution out of reach of children.
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When urea solution overflows the vehicle surface, wash out the surface with clean water to prevent any corrosion.
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When replenishing, be careful lest the urea solution should overflow.
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In case the vehicle was parked at very low ambient temperature (below -11 degree Celsius) for a long time, the urea solution will be frozen in the urea solution tank. With frozen urea solution, the urea solution tank level may not be detected correctly until the urea solution will be defrosted by activated heater. Incorrect urea solution or diluted urea solution can increase the freezing point, and thus defrosting may not be properly done by the heater w hich is activated below certain temperatures. This phenomenon may cause malfunction of the SCR system which can lead to the prohibition of engine restarting.
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The time to defrost the urea solution varies in accordance with driving conditions and outside temperatures.
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If defective urea solution or unrecommended liquid is supplied, damage on car parts such as emission reduction devices can be caused. If defective fuel is added, foreign objects will be accumulated to SCR catalyst and cause it to get clogged and break.
After adding incorrect urea solution, please visit the nearby authorized Kia dealer/service partner as early as possible.
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Liquid that are not recommended such as diesel, petrol, and alcohol shall never be used other than the recommended urea solution that satisfy ISO22241 or DIN70070.
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If defective urea solution or liquid that is not recommended is supplied, there may be damage on the parts of the vehicle such as processing device. If defective fuel is used, foreign objects will be accumulated to SCR catalyst and cause catalyst pushed away or breaking.