Our 2013 C-Max Hybrid showed the Wrench warning light, twice. The manual suggests that multiple appearances should be checked. We took it in to Stevens Creek Ford and they diagnosed the battery control module as defective. We were under warranty, which surprised me. They replaced the unit and we picked it up the next day. Everything seems to be running fine. Thank you Ford! My wife likes the car a lot and doesn't want to change right now; I have been arguing for a year that we should get a new car for her. At least for the next few months, I am not going to bring up the subject.
John
