Question about 2006 Audi A3

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My coolant warning light has come on????

Hi, my coolant warning light has come on but everything is fine. It only comes on when I start the engine and goes off after about 2 minutes Why is this?

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Coolant sensor going bad, more then likely located on the radiator or near the thermostat housing.

Posted on Jan 15, 2013

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Posted on Jan 02, 2017

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SOURCE: Coolant warning lights keeps coming on

Audi TT's only take G12 coolant (vw/audi propriatary formula) you can add some distilled water to the water level to prevent the light from coming on, but as you explained you keep adding fluid (of some kind) and the warning like returns. that's a little evident that you have a leak somewhere.

put some paper towels or something under your car when you park it for the evening. when you come out the next day, pull the car away from the spot and look at the paper towels. if they have orange drops, that's your G12 coolant leaking. like McMuff460 said, check all the clamps/hoses for signs of the leak. if you don't find anything i reccomend taking it to a shop for them to check out. Your water pump might be on it's way out.

Don't ever put any other fluid other than G12 coolant and distilled water into your car's coolant system. It will cause some major issues with seals, leaks, and cooling performance.

Posted on Nov 06, 2008

alicantecoli
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SOURCE: my coolant warning light comes on when i first

take the sensor out the header tank and shake it till the ball inside drops ,its stuck ,common on these cars this fault

Posted on Dec 07, 2010

  • 47 Answers

SOURCE: Coolant light on an AUDI TT 2000

It sounds like it is low on coolant. Coolant expands when it warms up so if it is just low enough to trip the switch when it is cold it will shut the light off when it warms up. You should be ok to just top it off but be sure that what you put in is compatible with what is in it. There must also be a leak somewhere in the system for you to have lost some to begin with. Depending on how many miles you have on the car it wouldn't hurt to have the cooling system flushed if it's never been done before. If you do get it flushed take it to the dealer to have it done. Explain to them the low coolant and have them check the system for leaks at the same time. Hope this helps

Posted on Dec 23, 2008

  • 62 Answers

SOURCE: Emmissions light has come on?

you need to get it scanned, i assume "emissions light" is your check engine light, or the "visit emissions workshop" message, which means, go to a shop and get it checked. The coolant disappearing means you probably have a leak. Another reason to check it,

Posted on Jul 11, 2009

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Good Luck!! Don't forget to rate this post!!

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