Why does the Roewe RX5 dashboard display blue for water temperature?

[DiCalvin]

Roewe RX5's blue water temperature display indicates low water temperature. Here is a partial introduction to how the water temperature gauge works: 1. The water level sensor inside the container sends the detected water level signal to the controller. The computer within the controller compares the actual water level signal with the set signal to determine any deviation. Based on the nature of the deviation, it sends commands to the electric water valve to open or close, ensuring the container reaches the set water level. 2. After the water intake process is completed, the computer in the temperature control section sends a command to open the electric valve supplying the heating medium, and the system begins heating the water in the container.

[Sheila]

The blue water temperature indicator on the Roewe RX5 dashboard is something I frequently encounter. Having driven this car for years, especially during cold winter starts, the blue light indicates the engine temperature is still low and hasn't warmed up yet. Normally, after a few minutes of idling or driving slowly for a short distance, the water temperature rises to around 90 degrees Celsius and the blue light turns off automatically. If it stays on continuously, there could be a serious issue – perhaps low coolant levels needing a top-up, a stuck thermostat keeping the engine in low-temperature circulation, or a faulty sensor causing incorrect readings. I remember one instance when the blue light wouldn't go off; upon checking the radiator, I found the coolant level was low, and refilling it solved the problem. I recommend owners pay attention to this – avoid high-speed driving immediately and let the engine warm up first to protect it and reduce wear.

[RoseDella]

When I drove the Roewe RX5, I noticed the blue coolant temperature light. During cold starts, the blue light is normal—it indicates the coolant temperature is too low and the engine isn't operating efficiently. However, if the light stays on after driving for a while, that's a bad sign. Possible issues include a faulty cooling system, such as a stuck thermostat maintaining low temperatures, or coolant leakage causing low levels. Sensor malfunctions are also likely, especially in older vehicles. I recommend checking the coolant reservoir level; if it's below the minimum line, top it up with antifreeze. For prevention, regular maintenance ensures the system functions properly—don’t wait until the light stays on to act, as engine overheating can damage components.

[SanTessa]

The blue water temperature light on the Roewe RX5 dashboard was on, which puzzled me when I first started driving. The blue light simply indicates that the water temperature is low and the engine is still cold. It will disappear after idling for a minute or two after starting. If the light doesn't go off, it could be due to insufficient coolant—open the hood and check the radiator fluid level. Alternatively, the issue might be a faulty sensor. I've learned to handle minor maintenance myself; addressing these small problems early saves trouble and prevents damage to the car.

[VanElliana]

The water temperature display of the Roewe RX5 shows blue, and I've experienced that the light staying on abnormally. The blue light normally only appears during cold starts and turns off once the water temperature rises. If it remains on persistently, it may indicate a cooling system malfunction, such as a stuck thermostat or aged/leaking coolant. This can reduce engine efficiency, increase fuel consumption, and if left unaddressed for long, may cause overheating damage. For safety considerations, stop the vehicle immediately to check the fluid level or contact a repair service. Conduct pre-drive instrument checks daily to prevent risks—maintaining system health ensures peace of mind.

[LeHailey]

Seeing the blue water temperature light on the Roewe RX5 dashboard, I understand it's a signal for low coolant temperature. It's normal for the blue light to appear when starting the engine, and it should disappear after warming up. If it remains on for an extended period, it might indicate low coolant levels requiring a top-up, or a faulty sensor giving incorrect readings. When checking, open the hood to inspect if the coolant reservoir level meets the standard. I recommend not delaying and addressing the issue promptly to prevent engine overcooling, which could affect performance. Regular system checks can help prevent unexpected issues.