how do I 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

400 words

Problem Statement

Learn how to check the coolant level in your Tesla Model 3 (2017-2023). Step-by-step instructions to ensure your cooling system functions properly.

Affected Component

Cooling System

Estimated Time

15-30 minutes

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always allow the vehicle to cool down before checking or adding coolant to prevent burns.

Symptoms

•Overheating warning light illuminated on the dashboard
•Decreased heating efficiency in the cabin
•Unusual noises from the front of the vehicle
•Frequent battery performance issues
•Draining coolant warning displayed on the touchscreen

Diagnostic Steps

1
Ensure the vehicle is parked on a level surface and is powered off.
2
Wait for the vehicle to cool down completely to avoid burns.
3
Open the front trunk (frunk) by pulling the release latch inside the vehicle.
4
Locate the coolant reservoir, which is typically a translucent tank marked with minimum and maximum level indicators.
5
Inspect the coolant level visually against the minimum and maximum indicators.

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

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Diagnostic Steps

1
Ensure the vehicle is parked on a level surface and is powered off.
2
Wait for the vehicle to cool down completely to avoid burns.
3
Open the front trunk (frunk) by pulling the release latch inside the vehicle.
4
Locate the coolant reservoir, which is typically a translucent tank marked with minimum and maximum level indicators.
5
Inspect the coolant level visually against the minimum and maximum indicators.

Solution

1. Preparation

Gather necessary tools: flashlight (if needed for visibility).
Ensure the vehicle is completely cooled down before proceeding.

2. Inspect Coolant Reservoir

Open the front trunk (frunk) by pulling the release latch located inside the cabin.
Locate the coolant reservoir on the passenger side of the frunk, usually near the front firewall.
Use a flashlight if visibility is poor to clearly see the level.

3. Evaluate Coolant Level

Check the coolant level against the minimum and maximum marks on the reservoir.
If the coolant level is below the minimum mark, proceed to add coolant.

4. Add Coolant (if necessary)

Obtain the recommended coolant type as specified in the Tesla owner's manual (usually a propylene glycol-based coolant).
Remove the cap from the coolant reservoir carefully.
Using a funnel, slowly add coolant until it reaches the maximum mark.
Replace the cap securely.