how to check the coolant level in my Tesla Model 3 Original (2017-2023)

Tesla Model 3 Highland (2024-present)

Error Codes

15-30 minutes

Time

easy

Difficulty

medium

Severity

2 min read

396 words

Problem Statement

Learn how to check and refill the coolant level in your Tesla Model 3 (2017-2023). Step-by-step instructions for maintaining your vehicle's cooling system.

Affected Component

Cooling System

Estimated Time

15-30 minutes

⚠️ Safety Warnings

Important safety information - read before proceeding

•Allow the vehicle to cool down before opening the coolant reservoir to avoid burns from hot coolant.

Symptoms

•Coolant warning light illuminated on the dashboard
•Unusual engine temperature readings
•Reduced heating performance in the cabin
•Increased battery temperature during operation

Diagnostic Steps

1
Park the vehicle on a level surface and ensure it is turned off.
2
Open the front trunk (frunk) by pulling the release switch inside the vehicle.
3
Locate the coolant reservoir, which is typically found on the right side of the frunk.
4
Check the coolant level through the transparent reservoir side markings.
5
If necessary, use a flashlight to inspect the coolant level more clearly.

Solution

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

Parts Required

•Tesla-approved coolant

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Park the vehicle on a level surface and ensure it is turned off.
2
Open the front trunk (frunk) by pulling the release switch inside the vehicle.
3
Locate the coolant reservoir, which is typically found on the right side of the frunk.
4
Check the coolant level through the transparent reservoir side markings.
5
If necessary, use a flashlight to inspect the coolant level more clearly.

Solution

1. Preparation

Ensure the vehicle is parked on a level surface and turned off.
Gather necessary tools: a flashlight (if needed).

2. Access the Coolant Reservoir

Open the frunk by pulling the release lever inside the cabin.
Lift the frunk lid and secure it if necessary.

3. Inspect the Coolant Level

Locate the coolant reservoir on the right side of the frunk.
Observe the level of coolant against the markings on the side of the reservoir.
The coolant level should be between the "MIN" and "MAX" markings.

4. Refill Coolant (if necessary)

If the coolant is below the "MIN" mark:
- Remove the cap from the coolant reservoir.
- Using Tesla-approved coolant, slowly fill the reservoir until it reaches the "MAX" mark.
- Replace the cap securely after filling.

5. Final Check

Ensure all tools are removed from the frunk.
Close the frunk lid securely.