why is my Tesla Model Y Current (2020-present) making clicking sounds when I start it?

Tesla Model Y Current (2020-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

522 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 clicking sounds during startup in Tesla Model Y (2020-present). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to avoid shock or short circuits.
•Allow the vehicle to cool down before performing any maintenance.

Symptoms

•Clicking noise when attempting to start the vehicle
•Inability to start the vehicle or slow cranking
•Dashboard warning lights illuminated
•Possible intermittent power loss to electrical components
•No sound from the main battery or electric motors

Diagnostic Steps

1
Check the 12V battery voltage using a multimeter; it should be above 12.4 volts.
2
Inspect the 12V battery terminals for corrosion or loose connections.
3
Use the vehicle's onboard diagnostics to check for any error codes related to the battery or electrical system.
4
Verify the condition of the main battery pack by checking the battery management system (BMS) readings.
5
Test the starter relay and fuses associated with the starting system for continuity.
6
Inspect the wiring harness for any signs of damage or short circuits.

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
•Socket set
•Wire brush
•Dielectric grease

Parts Required

•12V battery (Group 24F)
•Fuses and/or relays (if necessary)

Related Faults

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Diagnostic Steps

1
Check the 12V battery voltage using a multimeter; it should be above 12.4 volts.
2
Inspect the 12V battery terminals for corrosion or loose connections.
3
Use the vehicle's onboard diagnostics to check for any error codes related to the battery or electrical system.
4
Verify the condition of the main battery pack by checking the battery management system (BMS) readings.
5
Test the starter relay and fuses associated with the starting system for continuity.
6
Inspect the wiring harness for any signs of damage or short circuits.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a level surface and turned off.
Disconnect the negative terminal of the 12V battery to prevent electrical shock.

2. Inspect and Replace the 12V Battery

Sub-step 1: Remove the cover of the 12V battery compartment.
Sub-step 2: Disconnect the positive terminal followed by the negative terminal.
Sub-step 3: Remove any mounting brackets holding the battery in place.
Sub-step 4: Carefully lift out the old battery and replace it with a new one of the same specifications (typically a Group 24F).
Sub-step 5: Reconnect the terminals, starting with the positive terminal followed by the negative terminal.
Sub-step 6: Reinstall the battery cover.

3. Inspect Electrical Connections

Sub-step 1: Examine all electrical connections related to the starting system and battery.
Sub-step 2: Clean any corroded terminals using a wire brush and apply dielectric grease to prevent future corrosion.
Sub-step 3: Tighten any loose connections to ensure a secure fit.

4. Test and Replace Fuses or Relays

Sub-step 1: Locate the fuse box and identify any fuses related to the starting system.
Sub-step 2: Remove and inspect the fuses; replace any that appear blown.
Sub-step 3: Check the starter relay for proper operation by swapping it with a similar relay in the fuse box.