Battery Symptom Troubleshooting - Low or Dead Battery (2016 2017 2018 2019 2020)

Low or Dead Battery 

NOTE: 

• A battery might be discharged under these conditions:
• • Driving a vehicle 6 miles (10 km) or less per day.
  • Leaving a vehicle idling with high electrical loads such as headlight, seat heaters, wipers, rear window defogger, etc.
• When doing the following operation during the measurement of the parasitic draw, it may not be measured accurate:
• • Approaching a vehicle with remote.
  • Locking or unlocking a door.

Indication Example 

1. PGM-FI system check

   - 1. Check for PGM-FI DTCs.

   DTC Description	Confirmed DTC	Pending DTC
   P0562 CHARGING SYSTEM LOW VOLTAGE

   DTC Description	Confirmed DTC	Pending DTC
   P065A ACG NO CHARGING MALFUNCTION
   P16BB ALTERNATOR B TERMINAL CIRCUIT LOW VOLTAGE
   P16E7 BATTERY BLOWER LIN COMMUNICATION ERROR

   Are DTCs P0562, P065A, P16BB, and/or P16E7 indicated?

   YES 

   Go to indicated DTCs troubleshooting - Refer to: Fuel and Emissions Systems DTC Troubleshooting Index (KA/KC models) (2016) or Fuel and Emissions Systems DTC Troubleshooting Index (2017 2018) or Fuel and Emissions Systems DTC Troubleshooting Index (2019 2020). .

   NO 

   Go to step 2.

2. Battery fan motor check

   - 1. Test the battery fan motor.

   Is the battery fan motor OK?

   YES 

   Go to step 3.

   NO 

   Replace the battery fan motor .

3. Parasitic draw check

   - 1. Check all the BATTERY CONSUMPTION CURRENT HISTORY with the HDS.

   Battery Consumption Current History

   Battery size	Threshold of the average current
   L3	-10 mA

   Are all the values of average current from 1 hour to 2 hours less than the threshold?

   YES 

   Check the 12 volt battery.

   NO 

   Go to step 4.

4. Problem verification

   - 1. Turn the vehicle to the OFF (LOCK) mode.

   - 2. Get out of the vehicle, and close all doors and trunk securely.

   - 3. Lock the doors with the keyless remote.

   - 4. Make sure the individual map lights are turned off and the security alarm system is armed.

   - 5. Wait 130 minutes or more.

   - 6. Turn the vehicle to the ON mode.

   - 7. Check the latest BATTERY CONSUMPTION CURRENT HISTORY with the HDS.

   Battery Consumption Current History

   Battery size	Threshold of the average current
   L3	-10 mA

   Is the value of average current from 1 hour to 2 hours less than the threshold?

   1. YES 

      Intermittent failure, the system is OK at this time. The possible cause could be that an incorrect parasitic draw value was recorded:

      • A switch was not turned off.
      • The vehicle's accessories were operated for a long time with the vehicle ignition was in the ACCESSORY mode.

      NO 

      Go to the parasitic draw check - Refer to: Parasitic Draw Check (2016 2017 2018 2019 2020) .