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how to check for parasitic drain on Tesla Outback 5th Generation (2015-2019) battery? - Subaru Outback
Home/Cars/Subaru/Outback/5th Generation (2015-2019)/how to check for parasitic drain on Tesla Outback 5th Generation (2015-2019) battery?

how to check for parasitic drain on Tesla Outback 5th Generation (2015-2019) battery?

Subaru Outback 5th Generation (2015-2019)

Error Codes
1-2 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
4 min read
606 words

Problem Statement

Learn how to check for parasitic drain on the battery of a 2015-2019 Subaru Outback. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component
Electrical
Estimated Time
1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Always wear safety gloves when handling the battery.
  • •Disconnect the battery before performing any electrical work to avoid short circuits.

Symptoms

  • •Battery drains rapidly when the vehicle is not in use
  • •Difficulty starting the engine after the vehicle has been parked for a period
  • •Illuminated battery warning light on the dashboard
  • •Electrical components malfunctioning or not working when the vehicle is started
  • •Battery replacement needed more frequently than expected

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

  • ✓Test the affected component to ensure it functions correctly
  • ✓Check for any error codes or warning lights
  • ✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • •Digital multimeter
  • •Wrench for battery terminal
  • •Safety gloves
  • •Fuse puller

Parts Required

  • •Replacement fuses (if required)
  • •Electrical connectors (if damaged)

Additional Information

Affected Component
Electrical
Estimated Time
1-2 hours
Difficulty
medium
Severity
medium
Tools Required
4 items
Parts Required
2 items

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Solution
1. Preparation
  • Gather tools and materials: multimeter, safety gloves, and possibly a fuse puller.
  • Ensure the vehicle is parked safely with the engine off and key removed.
2. Disconnecting Components
  • 1.1. Disconnect Negative Battery Terminal: Use a wrench to loosen the nut on the negative battery terminal and remove the cable.
  • 1.2. Set Up Multimeter: Set the multimeter to the appropriate amp setting (usually 10A for high current). Connect the red probe to the battery cable and the black probe to the battery terminal.
3. Testing for Parasitic Drain
  • 3.1. Observe Reading: Allow the vehicle to sit for about 10-15 minutes after reconnecting the terminal to let all systems go to sleep. Record the reading on the multimeter.
  • 3.2. Pull Fuses: If current draw exceeds 50 milliamps, pull fuses one at a time while monitoring the multimeter until you find the circuit causing the drain.
4. Repairing the Fault
  • 4.1. Inspect Faulty Circuit: For the identified circuit, check wiring, connectors, and electrical components for damage or failure.
  • 4.2. Replace Faulty Components: Replace or repair any faulty parts found in the circuit causing the parasitic draw.
5. Finalizing
  • 5.1. Reconnect Battery: Reconnect the negative battery terminal securely.
  • 5.2. Test Operation: Start the vehicle and verify that all electrical components work properly.