my Tesla Model S Original (2012-2020) is leaking coolant how to fix it

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

543 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 S (2012-2020). Step-by-step guide with symptoms, diagnostic steps, 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 draining coolant to avoid burns.

Symptoms

•Coolant puddles or stains under the vehicle
•Low coolant level warning displayed on the dashboard
•Sweet smell of coolant inside or near the vehicle
•Engine temperature gauge reading higher than normal
•Possible overheating during operation

Diagnostic Steps

1
Inspect the coolant reservoir for cracks or leaks.
2
Check all hoses connected to the coolant system for wear or damage.
3
Examine the water pump for signs of leakage.
4
Look for leaks around the radiator and its connections.
5
Use a pressure tester on the cooling system to identify leaks under pressure.

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
•Screwdriver set
•Coolant pressure tester
•Drain pan
•Torque wrench

Parts Required

•Coolant reservoir (if damaged)
•Coolant hoses (if damaged)
•Water pump (if leaking)
•Coolant (proprietary Tesla coolant)

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Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the auxiliary battery to prevent any electrical issues.

2. Drain Coolant

Place a drain pan underneath the coolant reservoir.
Open the drain valve on the radiator (if equipped) or remove the lower hose to drain the coolant.
Dispose of the old coolant properly according to local regulations.

3. Inspect and Replace Damaged Components

Coolant Reservoir: If the reservoir is cracked, remove it by unscrewing any mounting bolts and disconnecting the hoses. Replace with a new reservoir.
Hoses: Check all hoses for cracks or wear. Remove damaged hoses by loosening hose clamps and replacing them with new ones.
Water Pump: If the water pump is leaking, remove it by disconnecting the hoses and unbolting it from the engine. Install a new water pump, ensuring proper torque specifications are followed (typically around 15-20 ft-lbs).

4. Reassemble and Refill

Reconnect all hoses and ensure they are secure with clamps.
Reinstall the coolant reservoir if it was removed.
Refill the cooling system with the appropriate type of coolant (Tesla recommends using their proprietary coolant).
Bleed the cooling system to remove any air pockets by running the engine with the radiator cap off until the thermostat opens.

5. Check for Leaks

Start the engine and let it reach operating temperature.
Inspect all connections for leaks while the engine is running.
If no leaks are detected, reattach the radiator cap.