2003 Boxster coolent leak

[dpaisley325]

After sitting in the garage for a couple of weeks I took my Boxster out. When I returned to the garage I noticed fluid leaking on the floor of the garage. It came from the area of the rear passenger side of the car at the rear tire. I opened the rear trunk a noticed liquid around the cap for the coolant. The cap did not seem loose, though I had the oil changed a couple of weeks before. Could the coolant have backed up through the cap? If so, why? Or could there be another problem?

[Meir]

remove the inner cover at the trunk and inspect the coolant reservoir for any cracks.
this is a very common issue in the boxster.

[dpaisley325]

Thanks, will check it. I suspect it is the filler cap right now.

[Pinarelloman]

Check that you have the latest version of the coolant reservoir cap. The early ones are renowned for leaking.