What does CH on the dashboard mean?
2 Answers
CH on the dashboard refers to the water temperature indicator. The water temperature ranges from C to H, where C represents 60 degrees. Once the water temperature gauge needle reaches C, it indicates the water temperature has reached 60 degrees. H represents 110 degrees, and the temperature indicated by the water temperature gauge can be estimated within the range from 60 to 110 degrees. The reasons for excessively high water temperature gauge readings are: 1. Insufficient coolant due to fluid loss or leakage; 2. Abnormal heat dissipation caused by a faulty cooling fan; 3. Abnormal circulation heat dissipation due to a faulty water pump; 4. Engine malfunction or cooling system failure. The reasons for excessively low water temperature gauge readings are: 1. Damaged thermostat; 2. Cooling fan running continuously.
I've been driving for twenty years and often see the CH light on the dashboard, which is a warning sign for the charging system, indicating that the alternator might be malfunctioning and the battery isn't charging properly. This issue commonly occurs in older vehicles, sometimes due to internal wear of the alternator, such as worn-out carbon brushes or a faulty voltage regulator; it could also be caused by a loose or broken belt, leading to poor transmission. I remember one time when I ignored this light on the highway, and within an hour, my car suddenly stalled because the battery was completely drained, forcing me to call for a tow truck. Since that lesson, I always remind everyone: if the CH light comes on, find a safe place to stop and check as soon as possible. Listen for any unusual noises near the alternator or simply measure the battery voltage (it should normally be around 13-14 volts). For preventive measures, it's crucial to inspect the alternator and belt tension during regular maintenance to avoid many troubles. In summary, although the CH light isn't an urgent red warning, ignoring it poses significant risks, affects driving safety, and may damage other electrical components.
