why do the dashboard lights flicker in my Tesla Outback?

Subaru Outback 5th Generation (2015-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

555 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

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to prevent shocks or shorts
•Allow the engine to cool before inspecting the alternator or any components near the engine

Symptoms

•Dashboard lights flickering or dimming
•Possible warning lights illuminated
•Electrical components functioning erratically
•Frequent resets of the infotainment system
•Battery charge fluctuating or draining rapidly

Diagnostic Steps

1
Inspect the battery voltage using a multimeter to ensure it is within the normal range (12.6V to 12.8V for a fully charged battery)
2
Check all fuses related to the dashboard and lighting systems for any signs of damage or failure
3
Scan the vehicle's onboard computer for any diagnostic trouble codes (DTCs) using an OBD-II scanner
4
Examine the ground connections and wiring harnesses for corrosion, loose connections, or damage
5
Perform a visual inspection of the alternator output to ensure it is charging the battery properly while the engine is running
6
Test the charging system under load to evaluate its performance and stability

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
•Wire brush
•Battery load tester
•Fuse puller

Parts Required

•Replacement fuses
•New battery
•New alternator

Related Faults

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Diagnostic Steps

1
Inspect the battery voltage using a multimeter to ensure it is within the normal range (12.6V to 12.8V for a fully charged battery)
2
Check all fuses related to the dashboard and lighting systems for any signs of damage or failure
3
Scan the vehicle's onboard computer for any diagnostic trouble codes (DTCs) using an OBD-II scanner
4
Examine the ground connections and wiring harnesses for corrosion, loose connections, or damage
5
Perform a visual inspection of the alternator output to ensure it is charging the battery properly while the engine is running
6
Test the charging system under load to evaluate its performance and stability

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface with the engine off.
Disconnect the battery negative terminal to prevent electrical shorts.

2. Battery Inspection

Sub-steps:
1. Reconnect the multimeter to the battery terminals.
2. Measure and record the voltage; if below 12.4V, recharge or replace the battery.
3. Clean the battery terminals with a wire brush if corrosion is present.

3. Fuse Check

Sub-steps:
1. Locate the fuse box and remove the cover.
2. Identify and inspect each fuse related to the dashboard and lighting systems; replace any blown fuses with the same amperage rating.
3. Reassemble the fuse box cover.

4. Ground and Wiring Inspection

Sub-steps:
1. Visually inspect all ground connections for tightness and corrosion.
2. Check the wiring harness for any signs of wear or damage.
3. Repair or replace any compromised wires or connectors.

5. Alternator Testing

Sub-steps:
1. Start the engine and use the multimeter to measure voltage output at the alternator; it should be between 13.5V and 14.5V.
2. If the output is low, the alternator may need to be replaced.

6. Charging System Load Test

Sub-steps:
1. Use a battery load tester to apply a load to the battery while monitoring voltage.
2. Ensure the voltage does not drop below 9.6V under load; if it does, replace the battery.