how to fix my Tesla Model S Original (2012-2020) radio with no sound

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

601 words

Problem Statement

Learn how to diagnose and fix the no sound issue in Tesla Model S (2012-2020) radio. 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

•Ensure the vehicle is stationary during this process.
•Always disconnect the negative terminal first when working with the battery.
•Ensure the vehicle is powered off before accessing electrical components.
•Ensure the vehicle remains stationary during the update process.

Symptoms

•No sound from the radio, media, or navigation prompts
•Volume control appears unresponsive
•No audio output from Bluetooth or USB sources
•Infotainment system working visually (screen operational)
•Check for any error messages on the display related to audio

Diagnostic Steps

1
Check the audio settings in the infotainment system to ensure nothing is muted.
2
Restart the infotainment system by holding down the scroll buttons on the steering wheel until the screen resets.
3
Inspect the vehicle's 12V battery voltage and health, as low voltage can affect the infotainment system.
4
Use a diagnostic tool to scan for any error codes related to the audio system.
5
Verify connections to the audio amplifier, located under the front trunk area.
6
Check for software updates that may address known issues with the audio system.

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

•OBD-II scanner
•Multimeter
•Socket set
•Flat-head screwdriver

Parts Required

•Replacement 12V battery (if necessary)
•Audio amplifier (if diagnosed as faulty)

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Diagnostic Steps

1
Check the audio settings in the infotainment system to ensure nothing is muted.
2
Restart the infotainment system by holding down the scroll buttons on the steering wheel until the screen resets.
3
Inspect the vehicle's 12V battery voltage and health, as low voltage can affect the infotainment system.
4
Use a diagnostic tool to scan for any error codes related to the audio system.
5
Verify connections to the audio amplifier, located under the front trunk area.
6
Check for software updates that may address known issues with the audio system.

Solution

1. Preparation

Gather tools needed: OBD-II scanner, multimeter, socket set, and a flat-head screwdriver.
Ensure the vehicle is in park and the ignition is off.

2. Restart the Infotainment System

Sub-steps:
1. Press and hold both scroll wheel buttons on the steering wheel.
2. Wait for the screen to go black, then release the buttons once the Tesla logo appears.
Tools Required: None
Safety Warnings: Ensure the vehicle is stationary during this process.

3. Check and Replace the 12V Battery

Sub-steps:
1. Open the front trunk and locate the 12V battery.
2. Use a multimeter to measure the voltage; it should read above 12.4 volts.
3. If the voltage is low, disconnect the battery terminals (negative first) and replace with a new battery.
4. Reconnect the terminals (positive first) and check if the audio system functions.
Tools Required: Multimeter, socket set
Safety Warnings: Always disconnect the negative terminal first when working with the battery.

4. Inspect Audio Amplifier Connections

Sub-steps:
1. Remove the access panel in the front trunk to reach the audio amplifier.
2. Check all wiring connections to the amplifier for looseness or corrosion.
3. If any connections are loose, resecure them and ensure a tight fit.
4. Reassemble the access panel and test the audio system.
Tools Required: Socket set, flat-head screwdriver
Safety Warnings: Ensure the vehicle is powered off before accessing electrical components.

5. Update Software

Sub-steps:
1. Connect the vehicle to Wi-Fi.
2. Navigate to 'Software' in the settings menu of the infotainment system.
3. Check for any available updates and install them if applicable.
4. Restart the system after the update is complete.
Tools Required: None
Safety Warnings: Ensure the vehicle remains stationary during the update process.