my Tesla Model 3 Original (2017-2023) is leaking coolant, what should I do

Tesla Model 3 Highland (2024-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

539 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 coolant leaks in Tesla Model 3 (2017-2023). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Cooling System

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components.
•Allow the engine to cool completely before opening any cooling system components to prevent burns.

Symptoms

•Coolant puddles or stains under the vehicle
•Warning message on the dashboard regarding low coolant level
•Overheating of the battery or engine during operation
•Unusual sweet smell inside or around the vehicle
•Reduced heating efficiency in the cabin

Diagnostic Steps

1
Inspect the coolant reservoir for visible cracks or leaks.
2
Check all coolant hoses for signs of wear, cracks, or loose connections.
3
Examine the connections at the water pump and radiator for leaks.
4
Use a pressure tester on the cooling system to identify leaks under pressure.
5
Inspect the electric coolant pump for functionality and leaks.
6
Look for any signs of coolant on the ground or around the vehicle's undercarriage.

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

•Socket set
•Torque wrench
•Screwdrivers (flathead and Phillips)
•Coolant pressure tester
•Drain pan

Parts Required

•Coolant reservoir (if damaged)
•Coolant hoses (if worn)
•Water pump (if leaking)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect the coolant reservoir for visible cracks or leaks.
2
Check all coolant hoses for signs of wear, cracks, or loose connections.
3
Examine the connections at the water pump and radiator for leaks.
4
Use a pressure tester on the cooling system to identify leaks under pressure.
5
Inspect the electric coolant pump for functionality and leaks.
6
Look for any signs of coolant on the ground or around the vehicle's undercarriage.

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the vehicle from the charger.
Allow the vehicle to cool down before starting work.

2. Drain Coolant

Place a drain pan under the vehicle.
Remove the drain plug from the coolant reservoir or radiator.
Allow the coolant to completely drain into the pan.

3. Inspect and Replace Components

Coolant Reservoir:
- Remove the coolant reservoir by disconnecting the hoses and any mounting brackets.
- Replace with a new reservoir if cracks or damage are found.
Hoses:
- Inspect all coolant hoses for wear and replace any that are cracked or damaged.
- Ensure all connections are tight and secure.
Water Pump:
- Remove the water pump if leaks are detected.
- Replace the water pump if it is faulty or leaking.

4. Refill Coolant

Use the manufacturer-recommended coolant to refill the system.
Make sure to follow the proper mixing ratio if using concentrated coolant.

5. Bleed the Cooling System

Start the vehicle and let it idle with the heater on high to help purge air from the system.
Monitor the coolant level and add more coolant as necessary until the system is fully bled.

6. Final Check

Inspect all replaced parts and connections for leaks after the engine has run for a few minutes.
Recheck the coolant level and top off if necessary.