Detailed below are the Hyundai Tucson dashboard warning lights. In general, red warning lights are the most urgent and require immediate attention. The dashboard display layout and warning light location will vary depending on your model version.
Airbag Warning Light
The Hyundai Tucson airbag warning light illuminates in red for around 6 seconds when the ignition switch or
the Engine Start/Stop button is set to the ON position. If the warning light stays on, it means there’s a malfunction with the airbag / SRS (Supplemental Restraint System).
Brake Warning Light
The Hyundai Tucson brake warning light illuminates in red for around 3 seconds when the ignition switch or
the Engine Start/Stop button is set to the ON position. The brake warning light stays illuminated when the parking brake is on. If the warning light remains on when the parking brake is properly released, it means there’s low brake fluid level in the reservoir.
If driving, stop as soon as possible and top up the reservoir with brake fluid. Check for leaks. If any leaks are found, or the brake fluid does not require topping up, or the brake light remains on, do not continue driving. Note; try manoeuvring the hand brake lever around as the brake warning light remaining on sometimes is caused by a bad hand brake switch.
ABS Warning Light
ABS (Anti-lock Brake System) works by using sensors in each wheel to detect if a wheel is locking. When pressing the brakes hard, the ABS reduces brake pressure to keep the wheel rotating just at the point before it locks. This enables the driver greater control of the vehicle. The Hyundai Tucson ABS warning light comes on when the system has malfunctioned. In this instance however, normal brake will resume without the benefits of ABS. It is safe to continue driving, but have system checked as soon as possible. Usual causes for ABS malfunction is a wheel speed sensor.
ABS + Brake Warning Light
If the ABS and brake warning light both illuminate, it means there’s a fault with the Electronic Brake force Distribution (EBD). EBD allows for altering brake pressures on an individual wheel basis, therefore increasing braking efficiency. With EBD failure, avoid high speed driving and abrupt braking.
Brakes may not operate as expected. Have system serviced by a Hyundai workshop as soon as possible. Note; when the ABS and brake warning light illuminate, the speedometer, odometer, or tripmeter may not work. The EPS warning light may also illuminate. Possible causes is faulty ABS module.
EPB Warning Light
The Hyundai Tucson EPB warning light means there’s a fault with the Electronic Parking Brake. If the EPB warning light illuminates along with the ESC warning light, it does not mean the EPB has malfunctioned.
ESC Warning Light
ESC (Electronic Stability Control) operates by use of sensors to determine where you are steering
and where the vehicle is actually going. To aid in stabilizing the vehicle, ESC applies braking pressure to any one of the vehicle’s brakes and intervenes in the engine management system to assist the driver
with keeping the vehicle on the intended path.
If the amber ESC warning remains lit, it means there’s a fault with the system. ESC uses ABS sensors and can often be the cause of fault. If the ESC light flashes, it means the system is operating.
Power Steering Warning Light
The amber steering wheel / exclamation mark is the electronic power steering (EPS) fault light. If you have been making frequent left / right steering movements or had the steering placed at full lock while the engine is on, it may be a temporary fault where the system temporarily shuts off the power steering motor to prevent overheating. While the light is on, steering the vehicle will be more difficult. Have the system checked as soon as possible.
Malfunction Indicator Light
The Hyundai Tucson malfunction indicator light (MIL), often referred to a the check engine light comes on and stays on when there’s a malfunction with the emission control system. Usual causes of the check engine warning light are faulty mass airflow sensor, faulty oxygen sensor or faulty exhaust gas recirculation valve (EGR). There are other possibilities and the only way to locate the fault is to use diagnostic equipment to read fault codes.
Continued driving may cause damage to the emissions control system. On the petrol version of the Hyundai Tucson, if the check engine light is flashing, it usually means an engine misfire is occurring. In this instance, damage to the catalytic converter may occur. Immediately reduce speed until the light stops flashing. On diesel versions of the Tucson, a flashing check engine light is usually related to an error with the injection quantity adjustment which could result in loss of engine power, increased combustion noise and poor emissions.
Battery Warning Light
The red battery warning light remaining lit on the Hyundai Tucson dashboard indicates a charging problem. The fault may lie with the alternator belt – check that it is not broken or loose. Alternatively, the alternator may not be providing sufficient current to charge the battery, or the battery may be old and require replacement. If the light comes on while driving, immediately switch off any utilities that consume electricity and that are not essential. Drive immediately to a vehicle repair workshop as the engine may stop after a time.
Oil Pressure Warning Light
The red Hyundai Tucson oil pressure warning light is one of the more important faults as severe engine damage may occur unless immediate action is taken. If the light comes on while driving, immediately stop the vehicle and switch off the engine. Check engine oil level and if low, add oil. If you do not have spare oil or if after adding oil the light remains on, do not continue driving and keep the engine switched off. In this instance, you will need to arrange for vehicle recovery.
Overspeed Warning Light
The overspeed warning system is only available on certain versions of the Hyundai Tucson in designated areas. The overspeed warning light flashes along with an audible alarm when you drive the vehicle more
than 120 km/h.
Master Warning Light
The amber triangle containing an exclamation mark is the Hyundai Tucson master warning light. The warning light comes on along with a message when a maintenance issue or non-critical malfunction occurs. For example: low washer fluid, Blind Spot Detection (BSD) malfunction, Tire Pressure Monitoring System (TPMS) malfunction, service reminder etc.
Tire Pressure Warning Light
The amber tire pressure / tyre pressure warning light comes on when one or more tyres has been detected as under-inflated based on the set pressures by the tire pressure monitoring system (TPMS). The warning light flashes for around 1 minute then stays on if there’s a fault with the TPMS or that a tire has been fitted that doesn’t contain a pressure sensor.
Fuel Filter Warning Light
On diesel versions of the Hyundai Tucson, the fuel filter warning light comes on when water has accumulated in the fuel filter and requires draining. The fuel filter operates the critical function of separating water from the fuel and accumulates water in the bottom of the filter. Locate the fuel filter and replace the cartridge with Hyundai components. Continued driving may result in loss of power and over an extended time, damage may occur to the fuel injector, common rail or high pressure fuel pump.
4WD Warning Light
This warning light comes on when a fault has been detected with the 4WD system.
Headlights Warning Light
This warning light comes on due to a fault with the headlights. Faults may occur due to exterior lights; headlights, brake lights, fog lights because of burned-out bulbs (not LED light) or circuit malfunction.
DPF Warning Light
DPF (Diesel Particulate Filter) is responsible for filtering out harmful soot for exiting the exhaust system into the environment. The system is self-cleaning and usually does so without driver knowledge. On occasions (usually after frequent short drives), the DPF warning light comes on and requires driver intervention. To clean the DPF: drive at more than 60km/h (37 mph), or at a high engine speed (1500 to 2000 engine rpm) in a gear higher than 2nd for around 25 minutes.
When the filter has finished cleaning, the warning light goes off. If the warning light fails to go off, try the procedure again. Try to avoid stopping the vehicle if possible. If the warning light begins flashing, damage may occur to the DPF system. Have it checked by a Hyundai workshop.
Immobilizer Warning Light
The Hyundai Tucson immobilizer warning light comes on when the vehicle detects the key and the vehicle can be started. The warning light flashes when a fault has been detected with the immobilizer system. The warning light flashes briefly to indicate that the key is not in the vehicle. The immobilizer warning light illuminates for 2 seconds then goes off when the vehicle can not detect the smart key which is in the vehicle
while the Engine Start/Stop button is ON.
This may require assistance from a Hyundai workshop. The immobilizer warning light also flashes when the key battery is weak and requires replacement. The engine can be started if you press the engine start/stop button with the smart key.
Preheat Warning Light
The diesel preheat / glow plug warning light indicates the engine can be started when the light goes off. The illumination time varies with the engine coolant temperature, air temperature, and battery condition. If the warning light flashes, it may indicate a fault with the preheat system.
4WD Lock Mode Warning Light
The Hyundai Tucson 4WD lock mode is to increase the drive power when driving on wet, slippery pavement, snow covered roads and/or off-road. Lock mode should not be engaged on dry roads as this can potentially damage 4WD related components.
Auto Hold Warning Light
The Hyundai Tucson auto hold light illuminates white when the system is activated by pressing the auto hold button. It illuminates green when the vehicle is stopped by the foot brake and the auto hold system is operational. The auto hold button illuminates amber when there’s a fault with the system.
Downhill Brake System Warning Light
The Hyundai Tucson downhill brake system assists the driver going downhill by slowing down the vehicle under 8 km/h (5mph) (for automatic transaxle / dual clutch transmission) or 8 km/h (5 mph) (for manual transaxle vehicles) and lets the driver concentrate on steering the vehicle. The warning light comes on in yellow / amber when there’s a fault with the system.