my Tesla Model S Original (2012-2020) is leaking fluid what's causing it

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

605 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 fluid 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 battery before working on electrical systems
•Allow the engine to cool before opening any fluid reservoirs to avoid burns

Symptoms

•Visible fluid pooling under the vehicle
•Unusual smells (e.g., burnt or acrid odors)
•Warning lights on the dashboard (e.g., low fluid levels)
•Increased noise from the area of the leak
•Reduced performance or power loss

Diagnostic Steps

1
Inspect the area under the vehicle for the source of the leak and identify the type of fluid (oil, coolant, brake fluid, etc.)
2
Check fluid levels in the engine coolant reservoir, brake fluid reservoir, and battery coolant system
3
Use a UV dye in the fluids to trace the leak's origin if it's not immediately visible
4
Inspect hoses and connections associated with the leaking fluid for signs of wear or damage
5
Scan for error codes using an OBD-II scanner to identify any related issues

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
•Socket set
•Wrench set
•Screwdrivers
•Fluid catch pan

Parts Required

•Replacement hoses or lines (as needed)
•Gaskets (oil pan, valve cover, etc.)
•New fluids (coolant, brake fluid, engine oil)

Related Faults

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Diagnostic Steps

1
Inspect the area under the vehicle for the source of the leak and identify the type of fluid (oil, coolant, brake fluid, etc.)
2
Check fluid levels in the engine coolant reservoir, brake fluid reservoir, and battery coolant system
3
Use a UV dye in the fluids to trace the leak's origin if it's not immediately visible
4
Inspect hoses and connections associated with the leaking fluid for signs of wear or damage
5
Scan for error codes using an OBD-II scanner to identify any related issues

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a flat surface and the parking brake is engaged.
Disconnect the battery to prevent any electrical hazards during the repair.

2. Identify Fluid Type and Source

Clean the area around the leak to better observe the source.
Use a paper towel to dab the leaking fluid to determine its color and texture (e.g., red for transmission fluid, green/orange for coolant).

3. Repair the Leak

A. If the leak is from coolant:

Replace Damaged Hoses
- Locate the damaged hose.
- Use a socket set to remove the clamps and disconnect the hose.
- Replace with a new hose and secure with clamps.
Repair or Replace Radiator
- If leaks are found at the radiator, remove it by disconnecting the hoses and mounting bolts.
- Inspect for cracks or damage and replace if necessary.

B. If the leak is from brake fluid:

Inspect and Replace Brake Lines
- Check the brake lines for corrosion or cracks.
- Use a wrench to disconnect the damaged line and replace it with a new brake line.
Check Brake Master Cylinder
- Inspect the master cylinder for leaks.
- If leaking, remove the master cylinder and replace it with a new one.

C. If the leak is from oil:

Replace Oil Pan Gasket
- Drain the engine oil and remove the oil pan.
- Replace the gasket and reattach the oil pan, torqueing to manufacturer specifications.
Inspect and Replace Valve Cover Gasket
- Remove any components obstructing access to the valve cover.
- Remove the valve cover, replace the gasket, and reassemble.

4. Refill Fluids

Refill the appropriate fluids to the recommended levels after repairs are made.