This has now happened 3 times, including twice in the last 2 weeks: Several hours after I've parked my GLC for the night, one of the front parking lights comes on. Twice the right light, once the left. Just the front light, not a taillight. Light switch in the "auto" position (since there is no "off" position). Any ideas?

 

Programming issue. There is a software change/ upgrade that needs to be performed to correct this.

 

Other thread on this issue further back.