Hello, my V70 has been annoying me for some time with creeping cooling water loss. Cause is not clear. Now it turns out that cooling water accumulates under the carpet driver side. If I understand this correctly, is there something leaking on the heat exchanger of the heater, right? If I am right the following questions: 1. How can I put the loss in the footroom? Does not use the heater or do I have to let off the cooling water (do not put on the car) 2. How can I remove the water or dry it best? Is there a drain plug or should I make a bore? 3. What can be exactly defective? Heat exchangers or connecting plates? How can I find out. Does anyone have a repair manual? Where is there a low-priced replacement? Thank you for your help!!! Many greetings Stephan