Can BMW e38 clean the heater tank with Coca-Cola to control the heater?
1. In the season when the weather is not cold, the warm air inlet valve can be closed to isolate the engine cooling system from the warm air valve.
2. In cold winter, before using warm air, check whether the left and right air supply pipes and air inlet and outlet pipes are loose, falling off and broken.
3. Check whether the warm air system vibrates abnormally, whether the pipeline leaks, whether the water level of the drain tank is normal, and whether the drain pump works normally.
4. The water temperature of the engine should not exceed 90℃ to ensure the best performance of the heating device.
Symptoms of BMW heater valve damage:
1. After the temperature rises, the wind coming out of the air outlet is still not hot.
2, can't turn off the warm air, the air outlet is still hot air after the temperature drops.
3. In the automatic mode of turning on the air conditioner, the temperature inside the car can't reach the constant temperature effect.