Tesla Outback 5th Generation (2015-2019) interior lights won't turn off what's causing this

Subaru Outback 5th Generation (2015-2019)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

485 words

Problem Statement

Learn how to diagnose and fix the issue of interior lights not turning off in a 2015-2019 Tesla Outback. Step-by-step guide with diagnostic procedures.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to prevent short circuits.

Symptoms

•Interior lights remain illuminated even after closing doors
•Dome light stays on while driving
•Check for warning messages on the dashboard related to door status
•Battery drain occurs due to prolonged light activation
•Possible malfunction of door ajar indicators

Diagnostic Steps

1
Inspect all doors to ensure they are fully closed and latched.
2
Use an OBD-II scanner to check for any error codes related to the lighting system or door sensors.
3
Test the door switches for continuity using a multimeter.
4
Check the settings in the vehicle’s control panel for interior lighting options.
5
Inspect the vehicle's battery voltage to rule out a weak battery affecting the lighting control module.
6
Examine fuses associated with the interior lighting circuit for any blown fuses.

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

•OBD-II scanner
•Multimeter
•Socket set
•Flathead screwdriver

Parts Required

•Door switch (if faulty)
•Interior light control module (if damaged)

Related Faults

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Diagnostic Steps

1
Inspect all doors to ensure they are fully closed and latched.
2
Use an OBD-II scanner to check for any error codes related to the lighting system or door sensors.
3
Test the door switches for continuity using a multimeter.
4
Check the settings in the vehicle’s control panel for interior lighting options.
5
Inspect the vehicle's battery voltage to rule out a weak battery affecting the lighting control module.
6
Examine fuses associated with the interior lighting circuit for any blown fuses.

Solution

1. Preparation

Gather tools: OBD-II scanner, multimeter, socket set, and a flathead screwdriver.
Disconnect the vehicle battery to ensure safety while working on electrical components.

2. Inspect Door Switches

Remove the door panel from the affected door using a socket set and screwdriver.
Locate the door switch and disconnect the wiring harness.
Use a multimeter to check for continuity; replace the switch if it is faulty.

3. Examine Interior Light Control Module

Locate the interior light control module, typically found behind the dashboard or near the overhead console.
Disconnect the module's electrical connector.
Inspect for any signs of damage or corrosion; replace the module if necessary.

4. Check Lighting Settings

Reconnect the battery and turn on the vehicle.
Access the vehicle’s control panel and navigate to the interior lighting settings.
Ensure that the automatic interior light option is enabled and adjust as needed.

5. Final Assembly

Reassemble the door panel by reversing the disassembly steps.
Ensure all screws and clips are securely fastened.
Reconnect the battery and test the interior lights to confirm they function correctly.