how to fix my Tesla Model S Original (2012-2020) that has no sound from the speakers

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

550 words

Problem Statement

Learn how to diagnose and fix the no sound issue in Tesla Model S (2012-2020). 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 shock or short circuits.
•Allow the vehicle to cool before working on interior components.

Symptoms

•No sound from any of the speakers
•Check media source for sound output (radio, Bluetooth, etc.) shows no audio
•Volume control does not affect sound
•No error messages or alerts related to audio system
•Head unit powers on but displays no audio functions

Diagnostic Steps

1
Check the audio settings on the touchscreen to ensure volume is up and mute is off.
2
Perform a soft reset of the touchscreen by holding down the two scroll wheels on the steering wheel until the Tesla logo appears.
3
Inspect the audio source by switching between radio, Bluetooth, and USB to rule out a source issue.
4
Verify the speaker connections by accessing the under-dash area to ensure there are no loose or damaged wires.
5
Scan for diagnostic trouble codes (DTCs) using Tesla’s diagnostic tool or a compatible OBD-II scanner to check for audio system-related errors.

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

•Screwdriver set
•Multimeter
•OBD-II scanner

Parts Required

•Replacement amplifier (if needed)
•Speaker wiring (if damaged)

Related Faults

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Diagnostic Steps

1
Check the audio settings on the touchscreen to ensure volume is up and mute is off.
2
Perform a soft reset of the touchscreen by holding down the two scroll wheels on the steering wheel until the Tesla logo appears.
3
Inspect the audio source by switching between radio, Bluetooth, and USB to rule out a source issue.
4
Verify the speaker connections by accessing the under-dash area to ensure there are no loose or damaged wires.
5
Scan for diagnostic trouble codes (DTCs) using Tesla’s diagnostic tool or a compatible OBD-II scanner to check for audio system-related errors.

Solution

1. Preparation

Gather tools: screwdriver set, multimeter, OBD-II scanner (if needed).
Ensure the vehicle is parked and powered off.

2. Check and Reset Audio System

Soft Reset Procedure:
- Sit in the driver’s seat and close all doors.
- Press and hold the left and right scroll wheels on the steering wheel simultaneously for 10 seconds.
- Wait for the Tesla logo to appear, indicating the system is rebooting.

3. Inspect Wiring and Connections

Accessing the Audio Unit:
- Remove the lower dashboard cover using a screwdriver.
- Locate the audio amplifier and inspect all wiring connections for any loose or damaged wires.
Testing Connections:
- Use a multimeter to check for continuity in speaker wires.
- If any wires are damaged, repair or replace them accordingly.

4. Check Audio Settings

Verify Settings:
- Turn on the vehicle and navigate to the audio settings via the touchscreen.
- Ensure that the volume is set at an audible level and that the system is not muted.

5. Replacing the Amplifier (if necessary)

Removal:
- If all connections are intact and the issue persists, it may indicate a faulty amplifier.
- Disconnect the battery to prevent electrical shock.
- Unbolt the amplifier from its mounting location and carefully unplug the wiring harness.
Replacement:
- Install the new amplifier by reversing the removal steps.
- Reconnect the battery and test the audio system.