Can You Continue Driving When the DEF Light Comes On in a Diesel Vehicle?
1 Answers
When the DEF light in a vehicle is illuminated, you can drive for a short distance, but prolonged driving is not recommended. This indicates that the vehicle's auxiliary water tank is low on water and needs to be refilled promptly. The illumination of the DEF light in a vehicle signifies that the auxiliary water tank is low on water. If the small mileage display on the dashboard shows "DEF," it indicates an internal processor fault in the dashboard. If the auxiliary water tank is low on water, it must be refilled immediately. If the issue is with the internal dashboard processor, you should promptly visit a local 4S shop for repairs. The vehicle dashboard is a device that reflects the working conditions of various systems in the car. The reasons for low water in the auxiliary water tank include: leaks in the cooling system or minor issues with the cylinder head gasket; high coolant temperature causing system water shortage; a seized water pump leading to timing belt damage and piston valve contact; or a blown cylinder gasket mixing with engine oil or being expelled through the exhaust pipe. The auxiliary water tank is a component of the engine cooling system and helps balance the pressure in the radiator. Maintenance methods include: stopping to check if the temperature is too high while driving; promptly stopping to check if the radiator emits smoke; and regularly replacing the coolant.
