My Cadillac CTS was left on accessory and now my battery is dead, it wont start with a jump. What can I do ? No problems prior to this with anything.

Asked by Jul 11, 2019 at 06:12 PM about the 2012 Cadillac CTS 3.6L Premium AWD

Question type: Maintenance & Repair

My Cadillac CTS was left on in accessory mode and the battery is dead, will
not start with a jump.  Any suggestions?

2 Answers

38,680

If you are trying to start vehicle as soon as cables are connected vehicle will not start because battery is to low leave cables connected for about 3-5 minutes so that battery can be charged also would help to slightly raise RPMS from vehicle jumping your vehicle this will help charge your battery.

117,025

If the battery is not very old remove it and charge it. You'll probably have to set the battery charger on manual to get it to start charging the battery. Once the battery is fully charged it should be ok. Many newer vehicles will not crank if the battery is below a certain voltage. Hope that helps! Jim

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