So I bought this pioneer cd/mp3 deck for my car the week i bought it. It's been in the car since and has been fine until this week. Usually I would have the volume set around like 15-20 being pretty loud and good for a cruising around. But this week I had to turn the volume up to the 30's to hear the same volume as it was in the 15-20.The only recent change is cold weather. It's a Pioneer DEH-P6200BT HELP!!

 

Make sure the fader control hasn't gotten set towards the rear

 

Has the radio been reset (unplugged or new battery) recently? I would make sure the Loud function is on, or maybe the SLA has been turned down.