Water Light Comes on

[93URS4Avant]

If I go out and have a drive and got it some welly - all is good.
The next time I go to start the car the Water Light comes on and I have to put a kettle's worth of water in to the header tank.
I see no evidence of water be it clear or coppery inside the engine bay, checking all pipes etc, and wanted to know if anyone had any ideas that I could check?

Most irritating thing is having to carry a 2lt bottle of water with me - but hey-ho - worse things etc....

[s2_bo]

Is your headgasket ok?

[Tonks4x4]

check to see if your carpets are wet either side of the gearbox tunnel. Could be the heater matrix.

[Knight Rider S4]

Same as above ..easy to tell when you stick on heaters you get a sweet smell coming from the vents

[topsparky]

also check your header tank for cracks or even the cap
if it's not tight enough it will leak
also check rubber on said cap mate

[93URS4Avant]

I did replace the cap recently courtesy of Hoffer as the previous one spewed coppery puke all over the engine bay - this one seems to leave the engine bay clean - I am checking regularly when this happens but there is very little evidence if any. No smells from heater system and no dampness around carpets anywhere - I recently replaced the mats ( a sweet realcement URS4 set grom Germany) and there is no evidence other than 16 years of crud!). So not much to go on really.... I will keep caning it and checking it - I am supposed to be going to a rolling road today if Hoffer calls me back - that should prove investigative if not interesting or even cataclysmic!

Oh the life of a URS4 Avant Owner.

[spink]

check the rubber hose that joins the thermostat-->>metal heater matrix pipe,I have been losing a small amount of water for 1 year plus and couldn't find anything.Discovered it by accident the other day while doing another job on it.

[93URS4Avant]

Was a leaking seal on the ARP - will obtain PBQ and get it on before it foils my turbo! Thanks for advice and suggestions!