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What is the normal temperature for the Mercedes-Benz GLE coolant?

2 Answers

RoseDella

08/29/25 3:17am

The normal coolant temperature for the Mercedes-Benz GLE is around 90 degrees Celsius. After the vehicle starts, the coolant temperature rises rapidly, and when the pointer reaches 90 degrees, the heat exchange balances out, preventing further temperature increases. Generally, it is optimal to start driving when the temperature reaches 90 degrees. A decrease in coolant levels can cause the temperature to rise. In such cases, check for any coolant leaks. If leaks are found, repair the leaking components as soon as possible. If there are no leaks, promptly replenish the appropriate coolant. Do not use plain water as a substitute for coolant, as water has inferior heat absorption and dissipation capabilities compared to coolant, which can negatively affect cooling performance. Causes of excessively high engine coolant temperature: 1. Insufficient coolant: A decrease or leakage of coolant can lead to a rise in temperature. 2. Issues with the cooling fan: During high-speed operation, if the heat generated cannot be efficiently transferred to the coolant, it can impair cooling and result in elevated coolant temperatures. 3. Problems with the water pump: A malfunctioning water pump can cause the engine cooling system to fail, leading to a "boiling over" phenomenon.

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McAnthony

09/10/25 7:58am

I've driven several Mercedes-Benz models, and the GLE's coolant temperature gauge usually stays stable around 90 degrees. On highways, it might drop to about 85 degrees, while in city traffic or climbing hills, the highest I've seen is around 95 degrees. As long as the needle stays in the middle range of the gauge, there shouldn't be any major issues. I remember last summer when I was driving my family on mountain roads with the AC on, the temperature rose to 97 degrees. I got a bit nervous and called the dealership service guy, who told me Mercedes engines can handle up to 105 degrees as long as the warning light doesn't come on. After about half an hour of downhill driving, it indeed returned to 90 degrees. This car's cooling system is really reliable.

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