Coolant light comes on beeps and then flashes

chris_john_lane

I've a 2007 Volkswagen Passat 2.0 TDI . The coolant warning light has come on it beeps like mad at first and then flashes. I've checked the coolant and its above the line also the engine is cold. What could this be and is it safe to drive as it tells me to stop driving !!! Thanks

dooroy

If coolant level is at normal then you can run the car.
Let it idle for a while and check if there is heat coming from the heater as it warms up .
The heat from the heater shows that coolant is circulating.
If air output from the heater goes cold with it set to hot it probably means coolant level has gone down a lot - then time to stop and check .
You should be fine to drive keeping the above in mind .

chris_john_lane

dooroy wrote: »

If coolant level is at normal then you can run the car.
Let it idle for a while and check if there is heat coming from the heater as it warms up .
The heat from the heater shows that coolant is circulating.
If air output from the heater goes cold with it set to hot it probably means coolant level has gone down a lot - then time to stop and check .
You should be fine to drive keeping the above in mind .

Yes car heating is hot so i dont no what the problem could be

dooroy

Intermittent faulty sensor/connection etc.
Could sort itself out again or you may have to get it checked out (scanned for codes etc ).

chris_john_lane

dooroy wrote: »

Intermittent faulty sensor/connection etc.
Could sort itself out again or you may have to get it checked out (scanned for codes etc ).

I'd a feeling it could just be a sensor. Ive only bought the car so I'll be getting serviced anyway.

dooroy

If you've just got the car then it could have been doing this for a while - and previous owner got used to it to the point of ignoring it .
Can be very annoying on a car new to you though .

George Dalton

Read this thread, the same applies to your car:

http://www.boards.ie/vbulletin/showthread.php?p=97607133

chris_john_lane

George Dalton wrote: »

Read this thread, the same applies to your car:

http://www.boards.ie/vbulletin/showthread.php?p=97607133

Thanks will try this tomorrow

chris_john_lane

Cleaned the metal things inside the coolant tank with a toothbrush and its stopped the warning light

chris_john_lane

The cleaning with the toothbrush worked yesterday but its back on again

biko

Keep at it, or maybe just buy a whole new unit.

Roger Mellie Man on the Telly

The missus' stiff bristled Colgate brush did the trick on mine.

Strangely she ended up in A&E with mystery stomach cramps not long after, but the important thing was that the car was ok.

jca

Roger Mellie Man on the Telly wrote: »

The missus' stiff bristled Colgate brush did the trick on mine.

Strangely she ended up in A&E with mystery stomach cramps not long after, but the important thing was that the car was ok.

:D

George Dalton

Try my suggestion of a screwdriver to scrape the probes.

If none of that works then a new coolant tank is only around €30 from VW and will sort it.

Tropheus

George Dalton wrote: »

Try my suggestion of a screwdriver to scrape the probes.

If none of that works then a new coolant tank is only around €30 from VW and will sort it.

Is the sensor included with the tank? That's not like VW.

George Dalton

The sensor is part of the tank.

VW are very reasonably priced for parts in my experience.

canhefixit

George Dalton wrote: »

The sensor is part of the tank.

VW are very reasonably priced for parts in my experience.

<snip>

biko

Please don't hijack someone else's thread. Just start your own.