Pioneer DEH-3400UB Support Question
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Question posted by prunierfam on January 15th, 2017
Touch Screen Stereo Quits Working In Cold Weather
Current Answers
Answer #1: Posted by techyagent on January 17th, 2017 8:16 AM
If it seems sluggish turning over or just clicks, replace the battery (yourself), drive the car to a mechanic and check the alternator (or if you can do it yourself, remove the alternator and bring it to a parts store or chain that can bench test it).
Keep the stereo until you do these things. Your aftermarket stereo's weirdness is probably the result of a bad battery and alternator, not the problem.
The lights that are staying on are LED and should take a week if the car was sitting in cold weather to make a difference. I bet that you need to change at least the battery and maybe or the alternator, and when you do the stereo will go back to normal.
https://community.cartalk.com/t/car-stereo-not-working-right-in-cold-weather/60513/10
Thanks
Techygirl
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