Issues after being stood!

[l33wgn]

Ok so quick back story
2004 (53) 2.5 E85 I’ve owned the car for 3 years now and this was the first year I’ve had to store it on my drive instead of in a warehouse over winter, it was bagged but that’s possibly caused its own issues.
Was put away September last year until April 1st of this year,
Upon taking out of the bag I had some mould to clean and the battery was dead!
After getting a new battery on it it’s started and been driving just fine.
The coolant light keeps coming on whilst driving though, engine sounds good, no whiring or whistling ( 40k )
I cleared all the faults from the battery dying and these are the ones that came back
I’m thinking the water pump is on its last legs but any help would be greatly appreciated.

Will be changing the pump and belts in the next few weeks but if there’s anything else that I should be looking at please let me know!

 

[smorris_12]

The coolant light is coolant level. Assuming the level is good then possibly something has nibbled the wiring while standing.

 

[Rockhopper]

It’s a mechanic belt driven pump so they either work or they leak water all over the place so it won’t be that.
Clear all those codes, go for a drive and see what comes back.

 

[enuff_zed]

Have you actually physically checked the water level?
If the water pump impeller is corroded to the point it is not moving water around then with the cap off the expansion tank you won't see the usual jet of water entering the top.
However, it is much more likely that the float in the lower half of the expansion tank is sticking and causing the reed switch level sensor to falsely indicate. Note: this is NOT the float you can see at the top, but a separate, enclosed one at the bottom of the tank which magnetically operates the sensor.
This requires a replacement expansion tank. I've tried removing one and rattling it around to try to free things off, but it doesn't work.