Hi all. I have owned my RX400H for a couple of years, trouble free, during which time it has had a full service, timing belt and water pump change. I have covered around 25 k miles, bringing it to around 125k total. Until 3 months ago, I had never heard the electric cooling fan cut in. When it did, I needed to add a little coolant (about half a pint) and all was fine. However, incidences have slowly increased, and small amounts of coolant needed. There are no puddles, no obvious wet patches or drips, and the temp gauge does not alter, but the fan is kicking in more and more frequently. Any ideas?
