Just bought a 2003 325i. I took it to the dealer for the Inspection2. I brought it home with no problems, but when I went out to the garage later that night I noticed a very slight anti-freeze smell. I couldn't find any leaks under the car and nothing jumped out at me when I opened the hood. The next day after a 1 1/2 hour drive the Service Engine Soon light illuminated. I opened the hood and noticed that the windshield wash fluid was foamy and looked like it had overflowed the reservoir. That is reservoir is not pressurized, is it?
The dealership had nothing to say about the washer fluid, but did try to sell me a new environmental sensor.
Anyway, does anyone have any ideas on how this would happen. I've never seen anything like it.