The first is that the car can't start, which may be caused by the failure of the fuel pump or ignition components. Then call the police directly for help.
The second is that the fault light is on, but there is no abnormality in driving. This may be just a sensor failure, so you can continue driving temporarily.
The third is that the engine fault light is on, and the vehicle can run, but it has symptoms such as severe jitter and weak acceleration. Faced with this situation, we need to stop and call for help.
Extended data:
Matters needing attention in using diesel engine
First, choose diesel with good quality.
Diesel oil is a complex mixture of hydrocarbons, which is difficult to ignite. As a fuel, it is a relatively safer choice. Diesel quality is the guarantee of "healthy" operation of diesel engine. Inferior diesel oil containing moisture or impurities will seriously damage the high pressure distribution pump. So for users, the best way is to choose the gas station carefully and ask for the bill after refueling.
Diesel vehicles must not add gasoline by mistake. If the gas station staff mistakenly refuels the gasoline, the owner should not start the car, but should immediately contact the maintenance station or 4S shop for technical support.
Second, don't refuel after consuming energy.
Diesel engines are very powerful and fuel-efficient. Diesel engines with the same displacement have much higher power and lower fuel consumption than gasoline engines. However, the diesel engine must not run out of diesel before refueling, because in this case, the engine will idle and suck in air, which will seriously damage the engine.
Third, pay attention to the preheating device
Most new diesel engines have glow plug devices, which shows that glow plug is heating up. When the engine is cold, turn on the ignition switch, and when the light is on, the engine can be started. If the engine is in a warm-up state, the light will not light up and the engine can be started directly. At the same time, the lamp also has an alarm function. When driving, the indicator light flashes, indicating that the engine management system is out of order.