Question about 2000 Volkswagen GTI

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STOP check coolant light comes on at startup & turns off

Coolant has been topped off & there does not apear to be a coolant leak.  Light always turns off after a mile or 2 and never warns me until the next startup.  what causes this and what is the fix?

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  • 345 Answers

Could be the unit in the header tank that has gone open circuit,try a new one they arent expensive

Posted on Jan 01, 2009

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I have a toyota aygo my coolant tempterture warning light comes on when driving


Your coolant is low !! stop driving ! it's not a complex thing to sort out.
You need to top it up quickly. Under the hood you will find an expansion bottle for your coolant. Lift hood and look to the front right inside the engine bay, in front of battery you will find a plastic coolant bottle (with "coolant" embossed on lid)
Wait until the car is cold.

Marked on the side of the bottle are MIN/MAX notches.
Check the level reading and fill to recommended level (MAX) with appropriate coolant for your vehicle.
Replace lid firmly.

This poses another question...do you have a leak ?
With the radiator and cooling system topped up, check underneath the car for drips of water.
If none, then turn car over and let run until warm. Check again underneath for leaks.

It is possible if no leaks were evident, water may be leaking into the engine itself. That is a bigger problem, not serious if caught early.

It may be that your system just needs a top-up, that is why they make it easy to do this. Always check your water and oil every couple of weeks, It's a good habit to get into. Takes a couple of minutes and can save you problems on a long trip later.
Good luck..

Jan 13, 2015 | Toyota Cars & Trucks

1 Answer

2003 vw 18.t temp lights goes on but temp gauges read normal


If your coolant overflow is bubbling then regardless of what your gauge says you are having overheating issues. If your coolant is missing with no aparent leaks then you need to check your oil for a milky consistency and apearance which would most likely point to a blown head gasket. This would also explain overheating. Hope this helps

Dec 27, 2013 | Volkswagen Jetta Cars & Trucks

1 Answer

Temperature gauge rises, coolant is not leaking? and have full tank of it. "Low Trac" light always comes on, then the anti-lock and "track off" light comes on and stays on until my car...


IF COOLANT TEMPERATURE RISING,CHECK TOP RADIATOR HOSE IF TOP RADIATOR HOSE IS NOT HOT REPLACE THERMOSTAT AND RADIATOR PRESSURE CAP.IF ALL IS GOOD.IF CAR OVERHEAT WHILE SITTING IN A LONG TRAFFIC LINE.THE COOLING FANS NOT WORKING,CHECK COOLANT FANS FUSE AND RELAYS.IF BOTH IS GOOD.HOT WIRE TO SEE IF COOLANT FAN TURNS ON IF NO FAN MOTOR BAD.IF YES FAN MOTOR GOOD. PROBLEM COULD BE FAULTY COOLING FAN WIRING OR BAD ENGINE COOLANT TEMPERATURE SENSOR BAD OR FAULT IN THE PCM.

Sep 12, 2011 | 1999 Oldsmobile Alero

3 Answers

2002 malibu runs hot.


Sounds like you have a faulty head gasket or maybe a cracked head.This can cause overheating and the check engine light to come on.The code for the o2 sensor is probably caused by coolant getting into the exhaust system and coating the sensor.The coolant fan may work but it cannot remove enough heat from the rad to make the engine cool off.Try some engine coolant stop leak to see if it will help.This maybe only a temperary fix.Let me know if you need more.MOE

Jun 22, 2010 | 2002 Chevrolet Malibu

2 Answers

Check Coolant / STOP lights


It depends on the level of the coolant...
There is likely a float switch if it is checking for the amount of coolant. This would probably be in the overflow container off to the side. If the level is fine but the lights still come on, follow the wires from the coolant sensor back a little bit to see if they have come unplugged from the harness.

Aug 14, 2009 | 2003 Volkswagen Passat

2 Answers

The coolant light keeps coming on but the car is not overheating. it does leak coolant every now and again not all the time.


it is the coolant level sensor that is making the light come on, your car does not have to be overheating for it to come on.
once the coolant level goes below the sensor it turns the light on.
If you fix the leak it will stop the light going on unless the sensor is faulty.
Hope this has helped.

Jun 17, 2009 | 1999 Oldsmobile Alero

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