What problems will occur if the car relay is broken?

[McReid]

Symptoms of a damaged car relay include the starter not turning, the starter being weak, and the starter spinning freely. Function: The basic function of a car relay is to use a small current to control the operation of a large current, acting as an "automatic switch." It plays roles in automatic adjustment, safety protection, circuit conversion, and switching in the circuit. Selection based on usage environment: Usage environmental conditions mainly include temperature (maximum and minimum), humidity (generally referring to the maximum relative humidity at 40 degrees Celsius), low air pressure (can be ignored if the usage altitude is below 1000 meters), vibration, and impact. Additionally, there are requirements for packaging methods, installation methods, dimensions, and insulation. Due to differences in materials and structures, relays can withstand varying environmental mechanical conditions. Using a relay beyond the environmental mechanical conditions specified in the product standards may damage it. Therefore, relays can be selected based on the environmental mechanical conditions of the entire machine or higher conditions.