Jaguar XJ low coolant light due to leak around water pump on Jaguar XJ

Some Jaguar XJ owners report experiencing issues with the low coolant light, often due to leaks around the water pump. These owners note that checking the coolant level is essential, as a small leak may still allow the coolant bottle to appear full. In such cases, while topping up with water can temporarily remove the warning, it is crucial to locate and repair the leak to avoid further complications. Additionally, some owners find it necessary to inspect the coolant system flow by feeling the hoses connected to the radiator, as this can indicate the efficiency of the water pump. If new coolant parts have been installed, ensuring that all hoses are securely tightened is vital to prevent leaks that could trigger the warning light. Furthermore, if the coolant tank is full but the light remains on, it may indicate a malfunctioning level sensor, requiring adjustments to the coolant level and proper air release from the system. Lastly, when topping up coolant, owners emphasize the importance of using the correct coolant type to avoid further issues.