Electrical system seems has no power

Tiny
JEFFLISA
  • MEMBER
  • 2003 CADILLAC DEVILLE
  • V8
  • 2WD
  • AUTOMATIC
  • 148,000 MILES
Battery tests at 12.2 volts no power to any device-ignition, lights, radio, remote.
Monday, June 14th, 2021 AT 6:19 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

The battery is very low. It is about 30%. 12.4 to 12.6 is what you need to make all the systems come online.

https://www.2carpros.com/articles/car-battery-load-test

I would charge the battery clean the cables and retest. Dirty battery cables will cause connection issues and will not allow voltage out of the battery.

https://www.2carpros.com/articles/how-to-charge-your-car-battery

https://www.2carpros.com/articles/everything-goes-dead-when-engine-is-cranked

I attached some guides for you below for this. Let us know the results and if you have any other questions.

Roy

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Monday, June 14th, 2021 AT 9:26 AM

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