Coolant level warning when cold

I've been getting this on my 1.8T. The handbook says if the light goes on the coolant is either low of temps are high. It says nothing about it alarming if its too cold.

I'm pretty sure my light came on and stayed on a few times but flashed others so your theory of and intermitant fault through a sensor icing may be right.

has anyone else had this problem...

yes its the coolant level sensor indicating a low coolant level.

The colder weather brings tup this issue on the forum, - often while the coolant level is ok so seems confusing. When its cold it will be lower than usual. (thus when warm its ok)
My advice would be to top up the coolant to the upper end of the range indicated on the bottle. (when engine is cold). Ive owned two leons, both had warnings when coolant level was ok but towards lower end of the range, which have never been repeated after topping up the coolant.

Others will swear that you sould remove expansion bottle top, look inside and locate the two metal prongs running from electrical connector into the coolant; then give these a gentle wiggle and scrape off any crap on the prong surfaces.
It is possible that over time some residue builds up on the prongs and if the coolant level drops even alittle this means that the prongs are less efficient and not enough connection is made between the two via the coolant.

You could be thorough and remove the electrical connector and clean all contacts.

Others will say only fix is to replace the expansion bottle as the sensor is built it. But i would do the above first as this works 95% of the time.

yeah i get this most mornings at 6am now.. the cars just really really cold. Start it up and de ice your windows on the outside with the scraper.. get in the car (idle for about a minute) and stop the engine..start it again and hey presto the lights are gone! Be sure to let your glow plug light go out in these colder temps!

Also had this today, did worry me once I realised it wasnt the typical 'washer level low' beep, however problem went away as soon as I switched off and restarted the engine. 05 LCR, 80k miles.

Alex

I think I have the solution to your problem, you must clean the stems of your jar of liquid cooling with an old toothbrush, because there may avaoir a deposit which is formed above and those that his book your bipppp by very low temperature.

PS: for the sake of prevention of false contact disconnect the probe presence of coolant and tap into the jar

I got permission to put the photo I would have done but I have not yet reached 15 posts

then still have problems?

I have the same problem with the warning light, not tried putting more coolant in it as the level is fine, thanks andy

If it's only a small amount i.e. from min to max on exapnsion bottle, could you not get away with just using water?

MarkTDI180- Are you checking your level when the engine is stone cold? Level will show higher when warm but drop when cold. If it's OK when cold yours could be worth cleaning the prongs.