Why does the car trouble light come on when it is cold?

It is caused by low engine temperature, which is a normal phenomenon. 1. Don't worry if the engine fault light goes out after the vehicle starts normally; 2. If the fault light continues to light up, use the detection computer to detect related problems; 3. As long as the motor vehicle is maintained normally, the normal use of the vehicle can be maintained. Motor vehicle winter maintenance includes replacing motor vehicle lubricating oil. The specific reason for hot car in winter is that the car is left for a long time, and the oil will flow to the bottom of the oil and need to be heated. The correct way to warm up the car should be to drive for at least one minute after starting, but don't drive at high speed at this time and keep driving at low speed. The engine speed should be limited to 3000~3500 rpm, generally 2000 rpm, otherwise the serious damage of the engine and transmission will be irreparable. After the engine temperature rises to the normal operating temperature (at least 3-5 minutes), driving can be completely resumed.

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