What does the CH on the dashboard indicate?
2 Answers
The CH on the dashboard represents the water temperature gauge. The water temperature indicator light is used to alert the temperature of the coolant inside the engine. Some may use colors to display different statuses: blue indicates the water temperature is too low, red indicates the water temperature is too high, and no light means the temperature is normal. Precautions for the water temperature gauge: The dial is larger than the water temperature gauge and is used to measure the engine's RPM. Generally, the RPM needle in the white scale area indicates a safe RPM range, while the red scale section represents a dangerous RPM range. Working principle of the water temperature gauge: The sensor of the water temperature gauge is a thermistor-type sensor, fixed with threads on the engine's coolant passage. The thermistor determines the current flowing through the coil windings of the water temperature gauge, thereby driving the pointer to swing. In the past, tap water was used as the coolant in car engines, but now many car engine cooling systems use specialized coolant, hence it is also referred to as the coolant temperature gauge. Normal temperature range for car water temperature: The water temperature gauge ranges from 0 to 130 degrees, with the normal temperature being the central 90 degrees. When the water temperature stabilizes at 90 degrees, it indicates that the engine's heat generation has stabilized, reaching the optimal working condition.
As a seasoned expert in the automotive field, I can tell you that the "ch" indicator on the dashboard typically represents a charging system warning, indicating an issue with the alternator failing to properly charge the battery. This situation may be caused by internal alternator failure, a loose or broken drive belt, or battery aging. Once the light comes on, it means the vehicle is consuming battery power. If ignored and not repaired, it can quickly lead to the car stalling while driving, which is particularly dangerous. I've found that many car owners encountering this issue should first check if the relevant fuse in the fuse box has blown—this is a simple task that can be done yourself. If the fuse is intact, then you should promptly take the vehicle to a repair shop for professional equipment to test the alternator voltage. I recommend regularly checking belt condition and battery health to prevent such troubles.
