my Tesla Outback 5th Generation (2015-2019) won't start but all lights are on

Subaru Outback 5th Generation (2015-2019)

Error Codes

1-3 hours

Time

medium

Difficulty

high

Severity

3 min read

557 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 5th Generation (2015-2019). Step-by-step guide with diagnostic procedures and repair instructions.

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 shocks or shorts.

Symptoms

•Attempting to start the vehicle results in no engine cranking
•Dashboard lights and electrical systems (radio, lights) function properly
•No clicking sound from the starter motor
•Possible message on the dashboard indicating 'Key Not Detected' or 'Battery Low'
•The vehicle may display a 'Ready' status without starting

Diagnostic Steps

1
Check the vehicle's battery voltage with a multimeter to ensure it's above 12.4 volts.
2
Inspect the key fob battery and replace if necessary, especially if the 'Key Not Detected' message is present.
3
Scan for error codes using an OBD-II scanner to identify any electronic faults.
4
Verify the condition of the starter motor and its connections visually.
5
Check the status of the brake pedal switch, as it may prevent the vehicle from starting.
6
Inspect the fuse related to the starting system 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

•Multimeter
•Small flat screwdriver
•Socket set

Parts Required

•CR2032 key fob battery (if needed)
•Starter motor (if faulty)
•Brake pedal switch (if faulty)

Related Faults

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Symptoms

•Attempting to start the vehicle results in no engine cranking

•Dashboard lights and electrical systems (radio, lights) function properly

•No clicking sound from the starter motor

•Possible message on the dashboard indicating 'Key Not Detected' or 'Battery Low'

•The vehicle may display a 'Ready' status without starting

Diagnostic Steps

1
Check the vehicle's battery voltage with a multimeter to ensure it's above 12.4 volts.
2
Inspect the key fob battery and replace if necessary, especially if the 'Key Not Detected' message is present.
3
Scan for error codes using an OBD-II scanner to identify any electronic faults.
4
Verify the condition of the starter motor and its connections visually.
5
Check the status of the brake pedal switch, as it may prevent the vehicle from starting.
6
Inspect the fuse related to the starting system for any blown fuses.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is in park (P) with the parking brake engaged.
Disconnect the negative battery terminal to avoid any electrical shorts.

2. Battery Inspection

Tools Required: Multimeter
Sub-steps:
1. Reconnect the negative battery terminal.
2. Use the multimeter to measure the battery voltage; it should be above 12.4 volts.
3. If the voltage is low, jump-start or replace the battery.

3. Key Fob Battery Replacement

Tools Required: Small flat screwdriver
Sub-steps:
1. Open the key fob using a small flat screwdriver to access the battery compartment.
2. Replace the old battery with a new CR2032 battery, ensuring the polarity is correct.
3. Reassemble the key fob and test if the vehicle starts.

4. Starter Motor Inspection

Tools Required: Socket set, multimeter
Sub-steps:
1. Locate the starter motor under the vehicle.
2. Check the electrical connections for corrosion or loose wiring.
3. Use a multimeter to test for voltage at the starter motor when the ignition is turned to the start position.
4. If no voltage is detected, further investigate wiring and relays. If voltage is present but the starter does not engage, replace the starter.

5. Brake Pedal Switch Verification

Tools Required: Multimeter
Sub-steps:
1. Locate the brake pedal switch under the dashboard.
2. Use the multimeter to check for continuity when the brake pedal is pressed.
3. If there is no continuity, replace the brake pedal switch.