how do I know if my Tesla Model S Original (2012-2020) has a coolant leak

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

466 words

Problem Statement

Learn how to diagnose and fix coolant leaks in Tesla Model S (2012-2020). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Cooling System

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always allow the engine to cool before opening the coolant reservoir to prevent burns from hot steam or fluid.

Symptoms

•Coolant warning light illuminated on the dashboard
•Fluid pooling under the vehicle
•Decreased cabin heating performance
•Unusual engine temperature readings
•Sweet odor of coolant inside or outside the vehicle

Diagnostic Steps

1
Check for visible signs of coolant leaks under the vehicle and around the engine compartment.
2
Open the front trunk and inspect the coolant reservoir for low levels of coolant.
3
Use a cooling system pressure tester to pressurize the system and observe for any drops in pressure.
4
Examine all coolant hoses and connections for cracks, wear, or loose fittings.
5
During a short test drive, monitor the engine temperature gauge for any unusual spikes.

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

•Flashlight
•Cooling system pressure tester
•Socket set
•Hose clamps

Parts Required

•Replacement coolant hoses (if damaged)
•Coolant (Tesla recommended type)

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Diagnostic Steps

1
Check for visible signs of coolant leaks under the vehicle and around the engine compartment.
2
Open the front trunk and inspect the coolant reservoir for low levels of coolant.
3
Use a cooling system pressure tester to pressurize the system and observe for any drops in pressure.
4
Examine all coolant hoses and connections for cracks, wear, or loose fittings.
5
During a short test drive, monitor the engine temperature gauge for any unusual spikes.

Solution

1. Preparation

Gather necessary tools and equipment.
Ensure the vehicle is parked on a level surface and the engine is cool.

2. Visual Inspection

Use a flashlight to check underneath the vehicle for any pooled coolant.
Look for signs of coolant residue on hoses, the radiator, and the engine components.

3. Check and Refill Coolant

If coolant is low, carefully open the coolant reservoir cap (ensure the engine is cold to prevent burns).
Fill with the recommended coolant type (Tesla's proprietary coolant) until it reaches the proper level.

4. Replace Damaged Hoses

For any identified damaged hoses, loosen the hose clamps using a socket wrench.
Remove the damaged hose and replace it with a new one, ensuring proper fitment.
Reattach the hose clamps and tighten them to manufacturer specifications (typically around 12-15 in-lbs).

5. Pressure Test and Repair

Attach the coolant pressure tester to the coolant reservoir.
Pressurize the system and look for leaks; if a leak is found, replace the affected component (e.g., radiator, water pump).
Ensure all connections are tight and reassemble any removed components.