The reason why the Land Rover Evoque is leaking coolant cannot be found:
1. The pipe interface is loose, and there will be no leakage when the engine is turned off and idling. Only when the engine speed increases, the water pump pressure increases. The interface just started to leak. Since the car is running at this time, the leaked coolant quickly evaporates under the action of high temperature and air flow. When the engine speed drops when parking, it will no longer leak and is difficult to find.
2. The automatic transmission needs to dissipate heat. There is an independent heat exchanger on the transmission. Both transmission oil and coolant circulate in the heat exchanger for heat exchange. The use of inferior coolant or no coolant in some vehicles may cause internal leakage in the heat exchanger, causing the transmission oil to mix with the coolant. Looseness and corrosion at the transmission heat exchanger interface may also cause coolant leakage.
3. The heating water tank has a separate valve, which is controlled by a temperature adjustment knob. When the temperature adjustment knob is turned to the hot air position, the knob opens the valve through the steel wire, and the high-temperature coolant enters the warm air water tank for circulation. When turning on the air conditioner, adjust the knob to the cool position and the valve will close. Due to long-term opening and closing, the valve is prone to wear and tear, causing coolant leakage.