I have a C70, 2007. The passenger door opens just a bit while car is in motion, usually in highway driving. Warning light comes on, I pull off road, use unlock switch and use handle to open and then close door. This is unnerving to say the least. Has anyone else had this problem?

 

Those door latches on the c70's are double locking latches and are common to go bad and unfortunately in your case it sounds the latch is the culprit. let me know what you find.
good luck, cheers

 

Thanks for the quick reply. I will get that checked. I had the driver side door latch assembly replaced as it just quit working a couple years ago. These fancier cars are a constant headache. Still miss my 240 wagon that lasted almost 25 years with very few issues. Have a food day. NancyB