Troubleshoot Cadillac Battery Light On Problem

Is your Cadillac battery light on? Are you getting "Battery not charging" on your dashboard (DIC)? These Cadillac problems including car not starting often happened because battery charge status (voltage) is too low. The problem can be caused by a bad alternator or old battery but it also be a poor ground connection, voltage regulator, blown fuse, bad relay or even due to a parasitic draw. Cadillac electrical issues can be tricky and challenging to figure out.

check cadillac battery voltage

The first step in troubleshooting Cadillac battery problems is to check battery voltage on the DIC by pressing the vehicle information button until Battery Voltage is displayed. Battery voltage should be in the 11.5 to 15.5 volt range. If the battery voltage is below this range, allow the battery to charge. If your Cadillac battery is old or not holding a charge you need to replace it. 

If the message or battery light continues to stay on you will need to test the charging system including the battery and alternator. This test can be performed by your Cadillac dealer, auto mechanic or yourself if you have the right tool.

Below you will find instructions on how to test Cadillac battery and charging system yourself. 

Common Cadillac battery problems

  • Cadillac battery light on
  • Alternator won't charge the battery
  • Car keeps dying or won't start
  • Cadillac keeps dying after a few minutes
  • Engine cranks very slow
  • Electrical issues and warning on DIC
  • Lights dim or flickering
  • Cadillac stalls or is hard to start
  • Battery keeps on dying overnight

Diagnose Cadillac Charging System

Follow the steps below to check the battery, charging system and alternator on Cadillac models such as ATS, CTS, XTS, CT6, XT5, Escalade, SRX, DTS, STS, BLS, XLR, DeVille. 

What you will need

Instructions

Park Vehicle

Park your Cadillac on a safe area. Set the parking brakes and turn off the ignition.

Cadillac test dead battery

 

Open Hood

Pull the hood release under the dashboard and open the hood.

 

Locate Battery

Locate the battery on your Cadillac. It will be in the engine bay or under the rear passenger seat.

Cadillac check alternator

 Newer Cadillac have a plastic cover on top of the battery in the engine bay. If that's the case remove the cover to access the positive and negative terminals of the battery. 

cadillac battery positive test terminal

If your Cadillac has the battery installed under the rear seat or trunk, you will see a positive jump starting terminal in the engine bay. Use this post and a bare metal on the car chassis to test the charging system. 

Connect Positive

Connect the red clamp on the positive battery terminal or jump start post.

Cadillac ATS, CTS, XTS, CT6, XT5, Escalade, SRX, DTS, STS, BLS, XLR, DeVille charging system check

 

Connect Negative

Connect the negative clamp on the negative terminal.

How to test battery, charger on Cadillac ATS, CTS, XTS, CT6, XT5, Escalade, SRX, DTS, STS, BLS, XLR, DeVille

 

Test Battery & Alternator

Perform battery and alternator test procedure.

Cadillac Battery Messages

Battery Saver Active

If Battery Saver Active is displayed on the DIC it is because the voltage is dropping below the recommended level of 11.5 bolts. Your Cadillac will restrict power to certain features, power options and accessories to allow the battery to charge.

You should turn off any unnecessary accessories as well such as rear defrost, phone and GPS chargers, lights if not needed. 

Battery Volts Low

If the battery in your Cadillac is discharged significantly and voltage is below 10 volts a message will show on DIC stating BATTERY VOLTS LOW. In such cases, you will need to jump start your Cadillac.

You will need to drive or let your Cadillac idle for at least 30 minutes or longer to charge the battery. Another option is to use a 12 Volt Battery Charger to bring your Cadillac battery back to fully charged status.