what should I do if my Tesla Model S Original (2012-2020) is leaking fluid

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

609 words

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 the 12V battery before starting work on electrical systems
•Allow the vehicle to cool down before inspecting or working on the coolant system

Symptoms

•Visible puddle of fluid under the vehicle
•Fluid found on the garage floor or driveway
•Warning messages on the dashboard (e.g., low coolant)
•Unusual smells (sweet smell from coolant, burning smell from oil)
•Decreased performance or range

Diagnostic Steps

1
Identify the type of fluid by its color and consistency
2
Inspect the area under the vehicle to locate the source of the leak
3
Check fluid levels in the coolant reservoir, brake fluid reservoir, and oil dipstick
4
Use an OBD-II scanner to check for any related error codes
5
Inspect hoses and connections for signs of wear or damage
6
Examine the undercarriage and battery pack for signs of coolant leaks

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
•Torque wrench
•Fluid catch pan

Parts Required

•Replacement hoses or clamps
•Gaskets or seals
•Coolant (Tesla-approved type)

Related Faults

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Diagnostic Steps

1
Identify the type of fluid by its color and consistency
2
Inspect the area under the vehicle to locate the source of the leak
3
Check fluid levels in the coolant reservoir, brake fluid reservoir, and oil dipstick
4
Use an OBD-II scanner to check for any related error codes
5
Inspect hoses and connections for signs of wear or damage
6
Examine the undercarriage and battery pack for signs of coolant leaks

Solution

1. Preparation

Ensure the vehicle is parked on a flat surface and the parking brake is engaged.
Disconnect the 12V battery to prevent electrical hazards.
Gather all tools and parts needed for the repair.

2. Locate the Leak

If coolant is leaking:
- Check the coolant reservoir cap for proper sealing.
- Inspect the coolant lines and connections for cracks or loose fittings.
If oil is leaking:
- Examine the oil pan and drain plug for signs of leakage.
- Check the valve cover gaskets for wear.
If brake fluid is leaking:
- Inspect the brake master cylinder and brake lines for any cracks.

3. Repair the Leak

For Coolant Leaks:
- Replace damaged hoses or clamps.
- If the reservoir is cracked, replace it with a new part.
- For minor leaks, use a coolant sealant as a temporary fix.
For Oil Leaks:
- Replace worn gaskets or seals.
- Tighten or replace the drain plug if necessary.
For Brake Fluid Leaks:
- Replace damaged brake lines or fittings.
- If the master cylinder is leaking, replace it.

4. Refill Fluids

Refill the coolant reservoir with the appropriate type of coolant (Tesla recommends using their specific coolant).
Add new oil if any was lost during the repair.
Refill the brake fluid reservoir with the correct type of brake fluid.

5. Final Checks

Reconnect the 12V battery.
Start the vehicle and monitor for leaks.
Check all fluid levels again after the vehicle has been running for a short period.