my Tesla Model 3 Highland (2024-present) has a loud clicking noise when starting, is it normal?

Tesla Model 3 Highland (2024-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

501 words

Problem Statement

Diagnose and fix the loud clicking noise during startup in Tesla Model 3 Highland (2024-present). Step-by-step guide with diagnostic and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the vehicle from the power source before working on electrical components

Symptoms

•Loud clicking noise during engine start
•Possible delay in motor engagement
•No other abnormal noises after starting
•No warning lights illuminated on the dashboard
•Potential intermittent starting issues

Diagnostic Steps

1
Check for error codes using a Tesla diagnostic tool
2
Inspect battery health via the Tesla app or touchscreen
3
Examine 12V battery for charge and corrosion
4
Listen for sound source while someone else starts the vehicle
5
Inspect relays and fuses associated with the starting system
6
Test power connections to the motor and battery

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
•Basic socket set

Parts Required

•Replacement 12V battery (if needed)
•Fuses (if blown)

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Diagnostic Steps

1
Check for error codes using a Tesla diagnostic tool
2
Inspect battery health via the Tesla app or touchscreen
3
Examine 12V battery for charge and corrosion
4
Listen for sound source while someone else starts the vehicle
5
Inspect relays and fuses associated with the starting system
6
Test power connections to the motor and battery

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, basic socket set.
Safety Warnings: Disconnect the vehicle from the power source before working on electrical components.

2. Inspect and Replace 12V Battery (if necessary)

Sub-steps:
1. Open the frunk (front trunk) and locate the 12V battery.
2. Use the multimeter to measure the battery voltage; it should read above 12.4V.
3. If the voltage is low, proceed to disconnect the negative terminal first, followed by the positive terminal.
4. Remove the old battery and replace it with a new one, ensuring it matches specifications.
5. Reconnect the positive terminal first, then the negative terminal.

3. Relay and Fuse Inspection

Sub-steps:
1. Locate the fuse box and relay panel in the vehicle.
2. Identify the fuses related to the starting circuit and inspect them for continuity.
3. Replace any blown fuses with the same amperage rating.
4. Test the relays by swapping them with identical ones in the fuse box to see if the clicking noise persists.