how to check for coolant leaks in Tesla Model S Original (2012-2020)

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

4 min read

604 words

Problem Statement

Learn how to check for coolant leaks in Tesla Model S (2012-2020). Step-by-step diagnostic guide with tools required and safety precautions.

Affected Component

Cooling System

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Allow the engine to cool completely before opening the coolant system to avoid burns.
•Wear safety glasses and gloves when handling coolant and performing inspections.

Symptoms

•Warning message indicating low coolant level
•Visible coolant puddles under the vehicle
•Sweet smell of coolant inside or around the vehicle
•Increased engine temperature readings on the dashboard
•Reduced heating or cooling efficiency in the cabin
•Frequent topping off of the coolant reservoir

Diagnostic Steps

1
Examine the ground under the vehicle for signs of coolant puddles or drips.
2
Inspect the coolant reservoir for cracks or signs of damage, and check the coolant level.
3
Visually inspect all coolant hoses for wear, cracks, or leaks.
4
Check connections at the radiator, water pump, and other components for signs of leaks.
5
Add UV dye to the coolant system and use a UV light to identify leaks.
6
Perform a coolant pressure test to check for leaks in the system while it's 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

•OBD-II scanner
•UV dye kit
•Coolant pressure tester
•Safety glasses
•Gloves
•Absorbent rags

Parts Required

•Coolant reservoir (if damaged)
•Coolant hoses (if damaged)
•Clamps (if corroded)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Symptoms

•Warning message indicating low coolant level

•Visible coolant puddles under the vehicle

•Sweet smell of coolant inside or around the vehicle

•Increased engine temperature readings on the dashboard

•Reduced heating or cooling efficiency in the cabin

•Frequent topping off of the coolant reservoir

Diagnostic Steps

1
Examine the ground under the vehicle for signs of coolant puddles or drips.
2
Inspect the coolant reservoir for cracks or signs of damage, and check the coolant level.
3
Visually inspect all coolant hoses for wear, cracks, or leaks.
4
Check connections at the radiator, water pump, and other components for signs of leaks.
5
Add UV dye to the coolant system and use a UV light to identify leaks.
6
Perform a coolant pressure test to check for leaks in the system while it's under pressure.

Solution

1. Preparation

Tools Required: OBD-II scanner, UV dye kit, pressure tester, safety glasses, gloves, absorbent rags.
Ensure the vehicle is turned off and cooled down to prevent burns.

2. Visual Inspection

Park the vehicle on a flat surface and allow it to cool.
Look for any visible coolant leaks underneath the vehicle.
Use absorbent rags to soak up any fluid and identify its color and texture.

3. Check Coolant Reservoir

Open the hood and locate the coolant reservoir.
Inspect the reservoir for cracks; if damaged, replace it.
If the coolant level is low, add the recommended coolant type (Tesla-approved coolant).

4. Inspect Hoses

Trace the coolant hoses from the reservoir to the engine and radiator.
Look for any signs of wear, bulging, or leaks.
Replace any damaged hoses with OEM parts.

5. Examine Connections

Check the radiator, water pump, and any other connections for signs of leakage.
Ensure all clamps are tight and replace any corroded or damaged clamps.

6. Use UV Dye

If leaks are not visible, add the UV dye to the coolant system.
Run the vehicle for a short period to allow the dye to circulate.
Use a UV light to inspect for leaks in hoses, connections, and other components.

7. Pressure Test

Connect a coolant pressure tester to the reservoir.
Pump the tester to the recommended pressure (usually around 15-20 psi).
Observe for any drops in pressure or visible leaks.