my Tesla Outback won't start but the lights work what's the issue

Subaru Outback 5th Generation (2015-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

564 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix the no-start issue 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 negative battery terminal before working on electrical components
•Ensure the vehicle is in park or neutral with the parking brake engaged when testing the starter motor

Symptoms

•Engine does not crank when the ignition is turned
•Dashboard lights illuminate but no engine sound
•No clicking noise from the starter
•Battery checks out but vehicle remains unresponsive
•Possible error messages displayed on the dashboard

Diagnostic Steps

1
Check the battery voltage using a multimeter to ensure it is within the acceptable range (12.4V or higher)
2
Inspect battery connections for corrosion or looseness
3
Scan the vehicle's computer system using an OBD-II scanner for any error codes related to the starting system
4
Test the fob battery if the vehicle uses a keyless entry system to ensure the key fob is functioning properly
5
Examine the starter relay and fuses for continuity and functionality
6
Inspect the ignition switch operation to ensure it is working 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
•Screwdriver set

Parts Required

•Starter relay (if faulty)
•Fuses (if blown)
•Ignition switch (if faulty)
•Starter motor (if faulty)

Related Faults

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Diagnostic Steps

1
Check the battery voltage using a multimeter to ensure it is within the acceptable range (12.4V or higher)
2
Inspect battery connections for corrosion or looseness
3
Scan the vehicle's computer system using an OBD-II scanner for any error codes related to the starting system
4
Test the fob battery if the vehicle uses a keyless entry system to ensure the key fob is functioning properly
5
Examine the starter relay and fuses for continuity and functionality
6
Inspect the ignition switch operation to ensure it is working correctly

Solution

1. Preparation

Tools Required: Multimeter, OBD-II scanner, socket set, screwdriver set.
Safety Warnings: Disconnect the negative battery terminal before working on electrical components.

2. Battery Connection Inspection

Step 1: Disconnect the negative terminal from the battery to prevent electrical shock.
Step 2: Inspect the positive and negative battery terminals for any corrosion or loose connections.
Step 3: Clean the terminals with a wire brush if corrosion is present and re-tighten connections securely.

3. Starter Relay and Fuse Check

Step 1: Locate the starter relay and corresponding fuses in the fuse box (refer to the owner's manual for specific locations).
Step 2: Remove the starter relay and test it for continuity using a multimeter.
Step 3: Replace any blown fuses and the starter relay if it fails the continuity test.

4. Ignition Switch Testing

Step 1: Reconnect the negative battery terminal.
Step 2: Turn the ignition key to the start position and observe the voltage at the starter solenoid using a multimeter.
Step 3: If no voltage is detected, check the ignition switch for functionality and replace it if necessary.

5. Starter Motor Inspection

Step 1: If the issue persists, locate the starter motor (usually at the base of the engine).
Step 2: Disconnect the wiring harness from the starter motor.
Step 3: Test the starter motor by applying direct battery voltage to it. If it does not engage, the starter motor needs replacing.