Three problems related to side/window air bag have been reported for the 2012 Chevrolet Volt. The most recently reported issues are listed below.
Passenger side airbag sensor warning. No damage, no cause, it just came on and the service department wants $800+ to fix it. This is a known issue effecting serveral other owners of the same vehicle. It is a defect!.
Passenger side airbag sensor in seat failing on and off for a couple months, steadily getting worse and light/warning coming on more often until it's continuously failing. Seat did not get wet or damaged.
Air bag sensor error keeps going on and off in dashboard. Took Volt in and service department says a faulty passenger side sensor located in the passenger side seat. To fix over $1000 + labour + tax. When error is on, service department says passenger side airbags will not function, my Volt is up to close to 100,000 miles read that other 2012 Volt owners were experiencing the same error. Air bag error started around Feb of this year and has been off and on since then. Longest period it was on for, was about 3 days so then I took car in. Before that the error would appear for an hour or 2 before disappearing.