Hello & Welcome to Just Answer,
I'm Greg and will do my best to assist you today.
Sorry I didn't see your question earlier and to hear of any issue you are having with your device.
To help you with this issue, may I ask:
1) Does this turning off behavior happen when the device is connected to the vehicle power adapter AND the vehicle is IN MOTION? If so, does this also happen when the vehicle is NOT in motion?
2) Has the battery life of the device been TESTED recently - by fully charging the device and then running it ONLY from the charged battery?
Please REPLY using the box below and the SEND button.
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