Exhaust Emission Control System

The exhaust emission control system is a highly efficient system that controls exhaust emissions while maintaining good vehicle performance.

Vehicle Modifications

This vehicle must not be modified. Modification of your vehicle may affect its operation, safety or durability and may even violate government safety and emissions regulations. In addition, damage or performance problems resulting from any modification may not be covered by warranty.

• If you use unauthorized electronic devices, the vehicle may operate abnormally, wiring may be damaged, the battery may discharge and a fire may occur. For your safety, do not use unauthorized electronic devices.

Precautions for Engine Exhaust Gas (Carbon Monoxide)

• Carbon monoxide may be present together with other exhaust gases. Therefore, if you smell exhaust fumes of any kind inside your vehicle, have it inspected and repaired immediately. If you ever suspect exhaust gases are entering your vehicle, drive only with all windows fully open. Inspect and repair your vehicle immediately.

WARNING

Engine exhaust gas contains carbon monoxide (CO). Although it is colorless and odorless, it is dangerous and may cause death if inhaled. Follow the instructions below to avoid carbon monoxide poisoning.

• Do not operate the engine in enclosed or confined areas (such as garages) longer than necessary to move the vehicle into or out of the area.
• When the vehicle is stopped in an open area for more than a short time with the engine running, adjust the ventilation system (as necessary) to draw outside air into the vehicle.
• Never sit in a parked or stopped vehicle for extended periods with the engine running.
• When the engine stalls or does not start, excessive cranking may damage the emission control system.

Catalytic Converter Operating Precautions

WARNING

• A hot exhaust system may ignite flammable materials under your vehicle. Do not park, idle, or drive the vehicle on or near flammable materials such as dry grass, paper, leaves, etc.
• The exhaust system and catalytic converter system are very hot while the engine is running or immediately after the engine is turned off. Keep away from the exhaust system and catalytic converter, as you may get burned.
  Also, do not remove the heat shield around the exhaust system, do not undercoat the vehicle floor, and do not apply anti-corrosion agent. This may create a fire hazard under certain conditions.

Your vehicle is equipped with a catalytic converter emission control device.

Therefore, the following precautions must be observed:

• Use only UNLEADED FUEL for gasoline engines.
• Do not drive the vehicle when there are signs of engine malfunction, such as misfiring or noticeable loss of performance.
• Do not misuse or abuse the engine. Examples of misuse: coasting with the engine switched off and descending steep slopes in gear with the engine switched off.
• Do not run the engine at high idle speed for extended periods (5 minutes or more).
• Do not modify or tamper with any engine part or the emission control system. All inspections and adjustments must be performed by an authorized HYUNDAI service center.
• Avoid driving with a very low fuel level. Running out of fuel may cause engine misfiring and overload the catalytic converter.

Failure to observe these precautions may damage the catalytic converter and your vehicle. In addition, such actions may void your warranty.

Diesel Particulate Filter (DPF)

The Diesel Particulate Filter (DPF) system removes soot from the exhaust gas.

The DPF system automatically burns (or oxidizes) accumulated soot according to driving conditions, unlike a disposable air filter.

In other words, accumulated soot is automatically removed by the engine control system and high exhaust gas temperature during normal/high-speed driving.

However, if the vehicle is driven repeatedly over short distances or driven at low speed for a long time, accumulated soot may not be automatically removed due to low exhaust gas temperature. In this case, the accumulated soot exceeds the detection range, soot oxidation does not occur, and the Diesel Particulate Filter (DPF) warning lamp () illuminates.

The Diesel Particulate Filter (DPF) warning lamp turns off when vehicle speed exceeds 37 mph (60 km/h), or when engine speed is between 1500 and 2500 rpm in 2nd gear or higher for approximately 25 minutes.

If the DPF lamp keeps flashing or the warning message "Check Exhaust System" remains illuminated under the above conditions, we recommend that you have the DPF system checked by an authorized HYUNDAI service center.

If the vehicle is driven continuously with the DPF lamp flashing for a long period, it may damage the DPF system and decrease fuel economy.

CAUTION

Diesel Fuel (for vehicles with DPF)

We recommend using only specified diesel fuel when your vehicle is equipped with a DPF system.

Using other diesel fuel with high sulfur content (above 50 ppm) or containing unspecified additives may damage the DPF system and cause white smoke emissions.

Lean NOx Trap (LNT) (if equipped)

The Lean NOx Trap (LNT) system removes nitrogen oxides from the exhaust gas. An odor may appear in the exhaust gas depending on fuel quality, and this may reduce NOx reduction performance. Please use specified automotive diesel fuel.

Gasoline Particulate Filter (GPF) (if equipped)

The Gasoline Particulate Filter (GPF) system removes soot from the exhaust gas.

The GPF system automatically burns (or oxidizes) accumulated soot according to driving conditions, unlike a disposable air filter.

In other words, accumulated soot is automatically removed by the engine control system and high exhaust gas temperature during normal/high-speed driving.

However, if the vehicle is driven repeatedly over short distances or driven at low speed for a long time, accumulated soot may not be automatically removed due to low exhaust gas temperature. In this case, the accumulated soot is outside the detection range, soot oxidation does not occur, and the Gasoline Particulate Filter (GPF) warning lamp () illuminates.

The Gasoline Particulate Filter (GPF) warning lamp turns off when vehicle speed exceeds 80 km/h at engine speed of 1500~4000 rpm in 3rd gear or higher for approximately 30 minutes.

If the GPF lamp keeps flashing or the warning message "Check Exhaust System" remains illuminated under the above conditions, we recommend that you have the GPF system checked by an authorized HYUNDAI service center.

If the vehicle is driven continuously with the GPF lamp flashing for a long period, it may damage the GPF system and decrease fuel economy.

CAUTION

Gasoline Fuel (for vehicles with GPF)

We recommend using only regulated gasoline fuels when your vehicle is equipped with a GPF system.

Using other gasoline that contains unspecified additives may damage the GPF system and cause exhaust emission problems.

Lean NOx Trap (LNT) (if equipped)

The Lean NOx Trap (LNT) system removes nitrogen oxides from the exhaust gas. An odor may appear in the exhaust gas depending on fuel quality, and this may reduce NOx reduction performance. Please use specified automotive diesel fuel.