I have a 2004 Accord that is due for a tuneup(service light is on) recently, the air bag light has come on, not all the time. Maybe 1 out of every three times the car is started.

Any ideas?

 

As I understand it, leaning against/applying pressure to a side door can cause this warning to come on.

My vehicle occasionally displays the airbag warning if I lean my leg against the driver side door as I'm driving. Taking the key out of the ignition should provide a soft reset.

This is (or could be) a simple warning to the driver that they could be impairing the vehicle's ability to deploy the bags unless the resistance/pressure is removed.