Question about 2006 Audi A4

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04 Audi A4 1.8T Low Coolant Light problem

The "Low Coolant" warning pops up on the dash just about everytime the car is driven. The coolant level is fine and has never had problems. I looked and notice that the sensor is still attatched to the bottom of the resevoir. It has been in the shop multiple times for this problem and they seem to fix everything but this.

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  • 507 Answers

Check float that is part or the warning light switch located in reservoir,the floats leak and sink in the reservoir giving low coolant reading

Posted on Oct 23, 2009

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Low coolant light keeps coming on but coolant looks full


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1999 VW Cabrio dash light


Obviously it's temperature gauge light. Check for coolant level first. Then check for coolant leak. If coolant is leaking out of your car, the lower coolant levels in your engine will cause it to overheat. If you have your heater on and it starts blowing hot air instead of cool, your engine is low on coolant. This will cause to flash a warning light on your car's dashboard.

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The little red water level gauge stays on


The red square shaped warning dash light is an image of a crudely drawn radiator indicating that you are low on coolant. Topping up your coolant bottle reservoir located on the passenger side above the wheel should clear up your issue. If your coolant level is full and is still indicating low coolant via dash warning light, you could possibly have a sensor out in the radiator or air bubbles in your coolant lines that need to be bled out.

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2 Answers

Coolant boiling in resevoir.


It can be faulty coolant temperature sensor.Its not sensing exact coolant heat temperature so its overheating then required level.

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Get the coolant pressure tested, its definitely leaking coolant. You will need to get the coolant running line.


Pressure test will help you to know from where exactly coolant/refrigerant is getting leaked.

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For complete step by step troubleshooting i suggest you to go through the help links mentioned below :----

Click the link below :-----


Coolant enters in transmission on Toyota Land cruiser?

http://schematicsdiagram.blogspot.com/2012/01/coolant-enters-in-transmission-on.html

--------------

1991 Toyota Camry: Order Coolant Bypass Tube?

http://whatisbyme.blogspot.in/2012/05/1991-toyota-camry-order-coolant-bypass.html

-------------

2002 Toyota Camry: Puff of Blue or White Smoke while Starting?

http://whatisbyme.blogspot.in/2012/05/2002-toyota-camry-puff-of-blue-or-white.html

----------------

1994 Toyota Camry: Coolant Leak?

http://technoanswers.blogspot.in/2012/04/1994-toyota-camry-coolant-leak.html

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2006 Cadillac DTS: COOLANT LEAK AT DRIVER SIDE NEAR FIREWALL?

http://schematicsdiagram.blogspot.in/2012/04/2006-cadillac-dts-coolant-leak-at.html

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MAF, IAT, MAP and Coolant Level Sensor problem all together on Mazda MPV?

http://schematicsdiagram.blogspot.com/2011/12/maf-iat-map-and-coolant-level-sensor.html

---------------

GMC Engine Coolant Temperature (ECT) Sensor Replacing?

http://schematicsdiagram.blogspot.com/2011/12/gmc-engine-coolant-temperature-ect.html

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Loosing Coolant?

http://whoisbyme.blogspot.in/2012/06/loosing-coolant.html

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Coolant temperature sensor dies again and again?

http://schematicsdiagram.blogspot.com/2012/01/coolant-temperature-sensor-dies-again.html

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2000 Daewoo Lanos: Where to Add Coolant?

http://repairhelpcenter.blogspot.in/2012/06/2000-daewoo-lanos-where-to-add-coolant.html

Blue Water Warning Light on Dash?

http://whatisbyme.blogspot.in/2012/07/blue-water-warning-light-on-dash.html

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Replacing Oldsmobile Engine coolant sensor?

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How to test Engine coolant temperature sensor?

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Replace Coolant Sensor Module on Oldsmobile?

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These details will help.

Thanks.

Nov 28, 2012 | 1996 Lexus GS 300

1 Answer

Jetta Warning Light


It says that your vehicle is low on coolant.Get the coolant level checked.If low has to be changed.

------------Check out few help links related to your issue.Click the link below:---


Service 4wd warning light on Dash? http://howtobyme.blogspot.com/2011/11/service-4wd-warning-light-on-dash.html

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Car Turns OFF due to low oil pressure warning light? http://schematicsdiagram.blogspot.com/2011/12/car-turns-off-due-to-low-oil-pressure.html

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Hybrid warning Light ON? http://whatisbyme.blogspot.in/2012/05/2005-toyota-prius-hybrid-warning-light.html

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Order Coolant Bypass Tube? http://whatisbyme.blogspot.in/2012/05/1991-toyota-camry-order-coolant-bypass.html

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Coolant Leak? http://technoanswers.blogspot.in/2012/04/1994-toyota-camry-coolant-leak.html

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COOLANT LEAK AT DRIVER SIDE NEAR FIREWALL? http://schematicsdiagram.blogspot.in/2012/04/2006-cadillac-dts-coolant-leak-at.html
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MAF, IAT, MAP and Coolant Level Sensor problem all together? http://schematicsdiagram.blogspot.com/2011/12/maf-iat-map-and-coolant-level-sensor.html

----------
Engine Coolant Temperature (ECT) Sensor Replacing? http://schematicsdiagram.blogspot.com/2011/12/gmc-engine-coolant-temperature-ect.html Loosing Coolant? http://whoisbyme.blogspot.in/2012/06/loosing-coolant.html
---------- Coolant temperature sensor dies again and again?


http://schematicsdiagram.blogspot.com/2012/01/coolant-temperature-sensor-dies-again.html
----------- Where to Add Coolant? http://repairhelpcenter.blogspot.in/2012/06/2000-daewoo-lanos-where-to-add-coolant.html
-----------
------------ Blue Water Warning Light on Dash? http://whatisbyme.blogspot.in/2012/07/blue-water-warning-light-on-dash.html

--------------

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3 Answers

Where to add coolant for radiator on a 95 vw jetta?


Add Coolant to spherical reservoir at right rear of engine compartment as viewed from front. If it is low the coolant gauge flashing light will warn you of a low condition.

Jan 01, 2010 | 1995 Volkswagen Jetta

1 Answer

The coolant light has just come on, can it still be driven...and can i change this myself or take to garage?


DO NOT DRIVE the vehicle until you can confirm by VISUAL means the Coolant level in the System.
The coolant light coming on indicates, EITHER, Low Coolant level, or a Failure of the Coolant Level Sensor on the Surge [Expansion] Tank.
Also having refilled the Cooling system, and with the Engine running, LOOK for visible signs of a LEAK, on the Engine and Heater Hoses.
Regards, DT

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3 Answers

DASH LIGHT


Coolant level is low

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