Flashing red light - temp guage

[AdamRoutley]

in my dash sometimes when i start up, i have an audible beep and flashing red light next to the temp guage (the one next to the petrol guage) what is this and how can i rectify it (it dosent happen agen if i turn the car off and start agen)

thanks adam

 

[RikH]

not had it myself, but iirc its coolant temperature sensor
search that and i think ull find your answer

 

[Feel]

You can always tell when Autumn is setting in round here. It's not the falling leaves, it's the "three beeps".

http://www.seatcupra.net/forums/showthread.php?t=138824&highlight=prongs

 

[AdamRoutley]

i had my coolant sensor replaced a few months back so doubt its that

 

[AdamRoutley]

dosent look like too much of a serious problem as its not making the engine light flash up AND all liquid levels are ok...

 

[CupraUK]

its definately your coolant sensor, take it back, it's faulty!

 

[cordobabrendy]

Not necessarily cuprauk, when my water pump was beginning to fail I got the beeps too on inserting the key and turning ignition on.

 

[Tyler Owen]

Still worth a check there isn't any corrosion build on the prongs though as that's the easiest fix

 

[Jonny]

I had this again this morning

The first time it happened, it was actually genuine... on my way home from work one of the plastic elbows on the bottom of the radiator had burst, lost all the coolant & the temperature guage went up to the red.

The radiator was replaced under warranty, and everything was fine for a good few months.

Then one morning, I started her up and after about 5 seconds of the engine running the red light & beeps happened. The coolant level had dropped just below the 'MIN' mark on the bottle. About 200ml top up was all that was needed to top it up. There were no apparent leaks, and there was a slight "hiss" when I took the cap off, so I guess the system is air tight

I check the oil, coolant & washer levels weekly (along with tyre pressures etc.) and there has been no drop in coolant level.

After several months of being 'normal', this morning when I started the car, after 5 seconds, the red light & beeps happened again. I checked the coolant level and it had dropped to 'MIN' again.

Where is the coolant going? There are no obvious leaks anywhere & the system is tight. It's fine for months, looses about 200ml over night, top it up and it's fine for a few more months

Any ideas???

 

[Leigh15]

Sometimes the seal on the coolant reservoir isn't great and you start to lose pressure at high temps - it could be that. Would explain why you only got a slight hiss perhaps?

 

[NickT]

I have had this before in the colder weather and was wondering if the cold would cause the coolant to contract overnight, reducing the volume, causing the level to drop below minimum and the warning light to come on, could be complete bollox of course.