Question about 2002 Volkswagen Passat

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Where do i add coolant?

I just bought a 2000 passat with a 1.8L and got the "check coolant level" message. I took the cap off of the resevoir to add more anti-freeze, and the coolant just ran through the resevoir to the ground...after further examination, it looks like there is a "hole" in the bottom of there a hose missing that would "close" the hole, or am i overlooking something?

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The overflow container marked coolant. Make sure you do not mix antifreeze...very the vw reccomended and you will save lot of money in the long run. If mixed you could have a chemical reaction in resulting clogging of the heater core and no heat...expense of an exess of $1000.00 to repair vs an additional $9.0 extra for the g12 antifreeze..prestone all purpose is probably $$11.00..good luck

Posted on Jan 03, 2009


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Just had a go-round with same problem in an 87 Cavalier. Had to take off radiator cap, add coolant, squeeze bottom radiator hose. After no more bubbles, add coolant, squeeze top radiator hose. Squeeze bottom again. Add coolant as needed. The air was because it was run low when the radiator cap gasket failed and coolant boiled out. Never got the overheat notice on digital dash or idiot light. Make sure you have a new radiator cap.

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I have a 2003 VW Passat 1.8T. When I first start and drive the car, the coolant temp is normal. After a few miles, it will suddenly climb to the red, and STOP check coolant comes on. If I loosen the cap to...

Has coolant level been going down in return reservoir at all, as in have you had to add coolant recently to bring it up to top level? Have you tried running engine from cold, with heater on and let it run up to normal temperature with cap off return reservoir? If not do so, and watch level in reservoir and if it goes down, add as needed until engine running at normal, and not overheating. Allow rad fan to kick on & off a few times before re-installing cap on reservoir. Pay close attention to engine temp while doing this. If it goes high, shut it off and let cool. Be careful, my son's Passat just had overheat problem and turned out to be impeller on water pump ( internally) was spinning on shaft of pump. Thermostat is certainly a consideration if coolant is full, and all air bled out. Keep me posted on what happens when you run with cap off and keep reservoir full. Don't forget, heater on while doing this.

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1 Answer

A light come on with a box with arrow pointing down looks like waves what does it mean

This indicates a low level of coolant in the coolant bottle/resevoir..... this symbol represents the radiator or coolant system liquid level.

Warning comes on to warn of coolant level too low.

When the engine is cold...remove the cap and check level. Add 50/50 antifreeze/water to level indicated on the side of the coolant bottle or tank.

Reservoir Bottles/tanks are usually transparent and you can see the coolant level through the plastic.

When coolant topped off to correct level, lamp will go out need for scanner or shop to turn it off. It will come on as a 'self check' when you turn on the ignition and if level is okay will go out when engine starts.

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If coolant is coming outof the plastic bottle(coolant resevoir), then you need(when the engine is cool) to check your coolant levelwith the heater on full and fill until it is at the "MAX" line, replace the cap and allow to ide until normal operating temperature is achieved. Once it has, make sure your cooling fans are operating. Visually double check your resevoir for the proper level and take it for a test drive. Let me know if you ned further help.

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First, going two months without checking fluids leaves you open to not know when it started to get low. If you are filling the tank with gas, then you should check all the other fluids as well. By the book, you have two marks on the overflow container, COLD & HOT, normally we add coolant to the COLD level becuase of expansion when HOT it could overflow and waste coolant. So the new shop did not do anything bad, and the old shop should have advised you to check fuild levels often. In either case over two months evaporation could have reduced the coolant in the resevoir. It would be a good idea for the next few weeks to check it prior to starting the vehicle each day and not the level when cold, then check it when it has had time to warm up, such as when fueling the vehicle. Constanly having to add coolant is a serious condition that MUST be corrected soon or could lead to more serious engine failure. Hope this helps you.

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