Temperature light flashing slowly?

[Cluelessnblonde]

Hello Again!

I wonder if anyone here has experienced these symptoms with a Boxster 2000 3.2 S ?

After driving about 12 miles the other evening and parking up for a music gig for about 3.5 hours, I noticed the temperature light on the top right of the dash blinking slowly. The temperature gauge wasn't overly hot at about 85 but I stopped the car, left it for 10 minutes whilst reading the manual under a streetlamp and then added some more water to the reservoir. On re starting the engine, the warning lamp had gone out, so I simply drove the car home slowly and parked up. On examining the car once parked, I noticed that there was no heat at all around the nearside/passenger side rear air vent. The temperature light had not really dropped or risen at all on the drive back and there was no water leaking out anywhere or any steam venting from anywhere as far as I could tell.

Since then, I've made the same drive twice and had the same symptoms repeat themselves once but not both times.

One each occasion I've added a little more water to the reservoir (I find it really difficult to see quite how high the water level is through the plastic)

Today I added more water before even starting up. It was a lovely sunny day and I could read the water level on the reservoir tank a little clearer and I think I got the level up to just over the high mark. I made sure that the blue cap was tightened really well too. Drove the car for about 12 miles at various speeds then parked up for an hour and a half. Still no heat coming from the left air vent, but no flashing light from the temperature gauge and a constant reading of about 80. No problems again driving home, no water leaking anywhere, no steam, no spraying of water around filler cap, but again no heat from the left hand side air vent. I tried the AC on all 3 trips and it seemed to be working ok, but not really chilly cold, so could this be a contributing factor I wonder?

I'm wondering if any of you might have any ideas for me take with me to discuss with my local Porsche garage? As a blonde, I do hate just turning up with a sick car with no idea of what might be wrong!

Thanking you in anticipation.....x x x