PMP power issues when car is turned off (correct wiring)

[DrEskimo]

If.. you feel it is related to cold.. and (older) batteries do loose voltage when the temperature drops.. check the voltage of your battery with a multi-meter when the PMP has shut off. You may be surprised.. or be able to determine the PMP could be at fault.

Yea my car is only a few months old so highly unlikely to be a battery issue.

My multi-meter is reading 11.8v at the fuses when my PMP is shut off so it makes sense.

 

[Ralph2]

Yea my car is only a few months old so highly unlikely to be a battery issue.

My multi-meter is reading 11.8v at the fuses when my PMP is shut off so it makes sense.

I.. would have the charging system checked out.. a new battery in a new car.. should.. be holding a higher voltage than that.

 

[DrEskimo]

I.. would have the charging system checked out.. a new battery in a new car.. should.. be holding a higher voltage than that.

Something I will keep in mind, but two other owners of the same car with the same set-up also reported the PMP powering down now that the temperatures have fallen. I have switched off the PMP now so only run it when I am out.

If the issue still persists in the warmer months then I will look into my car more closely.