How does coolant work in a Volkswagen Passat?
Engine coolant circulates through your engine to keep it cool in the summer but won’t freeze in the winter. Make sure to check your engine when it is cold for an accurate reading. The video above shows you where the coolant reservoir in your Passat is located and how to add coolant.
How does the heater work on a Volkswagen Passat?
At the simplest level possible, the heater works by passing hot coolant from the engine into a tiny radiator called the heater core. At this point, the blower motor blows air across the it and the newly heated air blows on to the driver and passengers. If the heater has stopped working in your Passat, this process has failed in one way or another.
Why is the thermostat on my Volkswagen Passat not working?
The job of your Passat’s thermostat is to regulate the temperature of the engine. It does this by allowing water to enter the engine when it is getting hot, and by keeping coolant from entering while the vehicle warms up. Sometimes when a thermostat goes bad, it stays stuck open. This allows the coolant to continuously enter the engine.
What’s the outside temperature of a 2015 Passat?
1. Outside temperature rose to 27F for the test drive. I ran for 15 minutes at 60 to 65 mph and the cabin left vent rose up to 165F. If you change a heater core, it needs to be baby burped after changing the engine coolant by running at higher rpms or at road speeds in order to clear the air out of it.
What to do if you have oil in the coolant reservoir?
The first thing you should do if you notice oil in the coolant reservoir is to pressure test the system. If you pressure-tested the system and everything seems fine, you might want to remove the coolant from the reservoir and keep driving the car to monitor if any new oil appears in the reservoir.
What kind of coolant do you put in a Volkswagen Golf?
Be sure to check your owners manual to determine the correct type of fluid to add – for Volkswagens, it will typically be in a section titled Fluid Capacities in the back of your manual. Mix the coolant with distilled water so that you have a combination of 50% coolant and 50% water.