my Tesla Outback's dashboard lights keep flickering, what causes this

Subaru Outback 5th Generation (2015-2019)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

537 words

Problem Statement

Learn how to diagnose and fix flickering dashboard lights in Tesla 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

•Disconnect the battery before working on electrical systems to avoid shocks or shorts.

Symptoms

•Dashboard lights flickering intermittently
•Possible dimming or brightening of lights
•Inconsistent operation of other electrical components (e.g., radio, climate control)
•Warning lights may illuminate
•Battery warning or low voltage indicators present

Diagnostic Steps

1
Inspect the battery terminals for corrosion or loose connections.
2
Check the vehicle's battery voltage using a multimeter.
3
Scan the vehicle for any stored error codes using an OBD-II scanner.
4
Examine the fuses related to the dashboard and electrical systems for any that may be blown.
5
Inspect wiring harnesses and connectors for signs of wear or damage.
6
Test the alternator output to ensure it is functioning correctly.

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

•Multimeter
•OBD-II scanner
•Socket set
•Electrical contact cleaner
•Fuse puller

Parts Required

•Replacement fuses (if necessary)
•New battery (if voltage is persistently low)
•Alternator (if found faulty)

Related Faults

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Diagnostic Steps

1
Inspect the battery terminals for corrosion or loose connections.
2
Check the vehicle's battery voltage using a multimeter.
3
Scan the vehicle for any stored error codes using an OBD-II scanner.
4
Examine the fuses related to the dashboard and electrical systems for any that may be blown.
5
Inspect wiring harnesses and connectors for signs of wear or damage.
6
Test the alternator output to ensure it is functioning correctly.

Solution

1. Preparation

Gather tools: multimeter, OBD-II scanner, socket set, electrical contact cleaner.
Ensure the vehicle is parked on a level surface and is in the off position.
Disconnect the negative battery terminal to ensure safety during electrical work.

2. Inspect Battery Connections

Remove the battery terminal covers if applicable.
Clean any corrosion from the battery terminals using a wire brush and electrical contact cleaner.
Ensure connections are tight and secure before reconnecting the battery.

3. Check Battery Voltage

Reconnect the negative battery terminal.
Use the multimeter to measure the battery voltage. It should read between 12.4V and 12.7V for a fully charged battery.
If the voltage is low, consider charging or replacing the battery.

4. Scan for Error Codes

Connect the OBD-II scanner to the vehicle's diagnostic port.
Turn the ignition to the "on" position without starting the engine.
Follow the scanner's instructions to read any stored error codes. Document any codes for further investigation.

5. Inspect Fuses

Locate the fuse box, typically found under the dashboard or in the engine compartment.
Remove the relevant fuses for the dashboard and electrical systems using a fuse puller.
Inspect each fuse for continuity; replace any blown fuses with the same rating.

6. Check Wiring and Alternator

Visually inspect the wiring harnesses for fraying or damaged insulation.
Use the multimeter to test the alternator output while the engine is running; it should read between 13.7V and 14.7V.
If the alternator is not within this range, it may need replacement.