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The fault warning light system on cars has many meanings such as danger warning, vehicle error warning, operating system notification…

What does the car warning light mean?


On the dashboard behind the car steering wheel, the manufacturer has a system of indicator lights. Each indicator light has a symbol with its own meaning. Currently, the warning light symbols are applied in general and are used uniformly for all car models and brands in the world.

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Car warning lights usually have the following main color groups:

  • Red indicator light: Warning of vehicle faults or dangerous situations
  • Yellow indicator light: Notify vehicle error to be checked
  • Green indicator light: Notify system is working

Error symbols on cars


Signs of warning lights on cars from 1 to 12

first. Scene lights error hand brake: The indicator light comes on usually because you forgot to lower the handbrake when the car started running. If the handbrake is lowered and the light is still on, the brake switch may be set incorrectly brake fluid low, hydraulic pressure is lost…

2. Temperature warning light cooling water: The indicator light turns on when the engine temperature is higher than the safe level, the engine is overheated. The cause may be due to cooling water missing, Safe Water Clogged, radiator fan nice water pump malfunction… This is a warning light that should immediately stop the vehicle into a safe place and check the vehicle.

See detail: How to handle when the car is hot

3. Scene lights Low oil pressure indicator: The indicator light comes on when the oil pressure is low. This could be caused by a faulty oil pump. The car is low on oilusing the wrong type of oil, the safety valve is stuck… When you see the indicator light, you need to check it as soon as possible.

See detail: How to deal with low oil pressure

4. Error warning light electric power steering: The indicator light comes on when the electric power steering system is malfunctioning, the power steering sensor is faulty… When the electric power steering system fails, there are usually signs The steering wheel is heavy therefore need to check soon.

See details: How to handle electric power steering error

5. Warning light error air bag: Indicator light comes on when air bag damaged, dead battery, faulty sensor or faulty safety latch… need to check soon.

6. Lamp cBattery error photo: The indicator light comes on when the battery is empty. The cause may be due to a malfunction of the generator, a weak battery that needs to be replaced…

See details: How to check car battery error?

7. Steering wheel lock indicator light: The indicator light comes on when the steering wheel is locked. The cause of the steering wheel being locked is usually due to turning the steering wheel when the engine is turned off or turned off but forgot to return N or P.

See details: How to handle when the steering wheel is locked

8. Electric lock switch on indicator light: The indicator light comes on when the ignition switch is turned on.

9. Scene lights No seat belt warning: The indicator light comes on when the seat belt is not fastened or the seat belt is faulty.

ten. Scene lights car door is open open: The indicator light comes on when the car door is not closed.

11. Scene lights the bonnet is on open: The indicator light comes on when the bonnet is open.

twelfth. Scene lights Report the trunk of the car is open: The indicator light comes on when the trunk is open.

Symbols of error lights on cars from 12 to 30

13. Warning light engine error (Check Engine): The indicator light comes on when the engine system or related systems fail. The cause may be a malfunction in parts such as spark plug, ignition coil, injectorthermostatic valve, oxygen sensor, intake air flow sensor… Need to be checked as soon as possible.

See details: How to handle when the Check Engine light comes on

14. Error warning light Diesel particulate filter: The indicator light comes on when the Diesel particulate filter is faulty.

15. Error warning light wiper automatic: The indicator light comes on when the system swipe rain error automatically.

16. Lamp spark plug/Diesel heating alarm: The indicator light comes on when the spark plug is heating.

Scene lights Low oil pressure indicator: The indicator light comes on when the oil pressure is low. The cause may be a faulty oil pump, a car with a lack of oil, using the wrong type of oil, a jammed safety valve, etc.

18. Error warning light ABS brake: The indicator light comes on when the ABS system fails. This is usually caused by a dirty sensor. To handle just clean the sensor.

See details: How to clean ABS brake sensor

19. Electronic leveling system off warning light: The indicator light comes on when the electronic leveling system is off. Normally, people will turn off the electronic balance system when the car is bogged down or when they want to Drift the car.

Xem Thêm : Công nghệ VVT-i của Toyota là gì? Ưu nhược điểm ra sao?

20. Scene lights tire pressure indicator: The indicator light comes on when the tire pressure is low.

See details: How to check car tires

21. Scene lights error rain sensor: Indicator light comes on when wiper sensor faulty.

22. Error warning light brake pads: The indicator light comes on when the brake pads are faulty, usually the brake pads are worn. The solution is to check and replace the new brake pads.

See details: How to check and replace car brake pads

23. Lights rear glass drying: The indicator light comes on when the rear window heater is on.

24. Automatic transmission error warning light: Indicator light comes on when automatic transmission faulty. The cause is usually a problem with the transmission oil.

See details: How to check and handle car transmission errors

25. Suspension error warning light: The indicator light comes on when the suspension fails. The cause may be due to the elastic part, the guide part… malfunctioning.

See details: How to check for system errors

26. Shock absorber fault warning light: The indicator light comes on when the shock absorber system fails, it should be checked soon.

See details: How to check and repair car shock absorbers

27. Rear spoiler error warning light: The indicator light comes on when the spoiler is in the wrong position, reducing the balance, hindering the vehicle speed… need to be checked soon.

28. Exterior light fault warning light: The indicator light turns on when the exterior lighting system fails.

29. Warning light brake light error: The indicator light comes on when the rear brake light is faulty.

30. Lamp error warning Light Sensor: The indicator light comes on when the light sensor is faulty.

Indicator lights on cars from 31 – 42

thirty first. Scene lights Headlight distance adjustment indicator: The indicator light comes on when the headlights are on, it is necessary to adjust the light range to suit the environmental conditions to avoid dazzling oncoming vehicles.

See details: How to check and adjust car headlights

32. Scene lights error adaptive lighting system: Indicator light comes on when there is an adaptive lighting failure.

33. Scene lights error tow hook lamp: The indicator light comes on when there is a towing light fault, it should be checked soon.

34. Error warning light roof of a convertible: The indicator light comes on when the roof of the convertible has an error such as an incorrect position, it should be checked soon.

35. Warning light the key is not in the lock: The indicator light comes on when the key is not in the car lock.

36. Lane change warning light: The warning light comes on when the vehicle changes lanes or warns when driving in the wrong lane, which can be dangerous.

37. Scene lights report clutch pedal error: The indicator light comes on when the driver steps on the clutch pedal incorrectly or the clutch pedal is faulty like stuck, not close… Try releasing the clutch and pedal again.

See details: How to handle when the car is stuck in the clutch

38. Low level glass washer warning light: The indicator light comes on when the car window washer fluid is low, needs to be checked and refilled.

See details: How to change car windshield washer fluid

39. Indicator light on rear fog lights: The indicator light comes on when the rear fog lights are on.

40. Indicator light on front fog lights: The indicator light comes on when the front fog lights are on.

Xem Thêm : 4Matic nghĩa là gì? Hệ thống Mercedes này có gì đặc biệt?

41. Cruise control system on indicator light: Indicator light comes on when cruise control system be activated.

42. Brake pedal indicator light: The indicator light comes on to remind the driver to press hard on the brake pedal to start the vehicle.

Indicator lights on cars from 43 – 64

43. Lamp vehicle warning running out of fuel: The indicator light comes on when the car is about to run out of fuel, need to refill immediately.

44. Indicator light on turn signal lights: The indicator light comes on when the turn signal is on.

45. Indicator light on winter driving mode: Indicator light comes on when winter driving mode (snowy, slippery) is on.

forty six. Information light: The indicator light comes on when the vehicle is communicating by a signal on the electronic board.

47. Frost warning light: The indicator light comes on when the vehicle detects frosty weather.

48. Scene lights key report battery is about to run out: The indicator light comes on when the car key is about to run out of battery, need to change the battery soon.

49. Warning light for the distance between vehicles: The indicator light comes on when the vehicle is too close to the vehicle in front, it needs to be adjusted to keep a safe distance.

50. Headlight on indicator light: The indicator light comes on when the headlights are on.

51. Notification light turn signal light: The indicator light comes on when the turn signal light is having a problem, it should be checked and fixed soon.

52. Lamp catalytic converter error warning: The indicator light comes on when the catalytic converter in the exhaust system fails. The cause may be due to an engine problem that causes the fuel to not be fully burned, so it needs to be checked soon.

See details: How to handle when catalytic converter faulty

53. Scene lights bparking brake jacket: The indicator light comes on when the handbrake is working. If the handbrake is lowered and the light still shows, the brake switch may be set incorrectly, the brake fluid level is low, the hydraulic pressure is lost…

54. Indicator light on parking assistance: The indicator light comes on when the parking assist system such as sensors, reverse camera, radar, etc. is active.

55. Scene lights Report the vehicle in need of maintenance: The indicator light comes on when the vehicle is ready to be serviced.

See details: Details of car maintenance schedules of brands

56. Scene lights there is water in the fuel filter: The indicator light comes on when there is water in the fuel filter or oil filter, it should be checked as soon as possible.

See details: How to handle when gasoline is contaminated with water

57. Scene lights Airbag system shutdown alarm: The indicator light comes on when the airbag system is deactivated.

58. Scene lights vehicle error report: The indicator light comes on when the car has an error, it should be checked as soon as possible.

59. Cos . light on (close projection): The indicator light comes on when the cos – low beam light is on.

60. Scene lights dirty air filter alarm: The indicator light comes on when the engine air filter is dirty, needs to be checked, cleaned or replaced with a new air filter.

See details: How to clean and change the engine air filter

sixty one. Lights turn on the fuel-saving driving mode: The indicator light comes on when the fuel saving driving mode is on.

62. The indicator light turns on the downhill assist system: The indicator light comes on when the downhill assist system is activated.

63. Fuel filter error warning light: The indicator light comes on when the fuel filter is faulty such as the fuel filter is clogged, it should be checked as soon as possible.

See details: How to check car fuel filter

sixty four. Scene lights speed limit alarm: The indicator light comes on when the vehicle is traveling at a safe speed.

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