Battery & airbag warning lights - intermittent

[Max Crittenden 0]

Hi - new to this group. The battery warning light on my '07 Yaris is coming on intermittently. Sometimes the airbag light comes on with it. No problem starting or other battery symptoms. Mechanic found loose battery connections and tightened them; this reduced but did not eliminate the problem. So maybe there's a bad connection somewhere else. Anybody had this problem? Suggestions? Thx