my Tesla Model S Original (2012-2020) has a strange smell when driving

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

597 words

Problem Statement

Learn how to diagnose and fix strange smells in Tesla Model S. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

HVAC

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components
•Allow the vehicle to cool before inspecting the battery pack

Symptoms

•Unpleasant or burnt odor inside the cabin
•Smell of overheating components
•Musty or moldy scent suggesting water intrusion
•Electrical burning smell
•No unusual noises accompanying the smell

Diagnostic Steps

1
Check for error codes using OBD-II scanner
2
Inspect cabin air filter for signs of mold, debris, or blockage
3
Examine battery pack and associated wiring for signs of overheating, burns, or damage
4
Check for water intrusion by inspecting the vehicle for potential water leaks
5
Inspect HVAC system for signs of mold or debris buildup

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
•Screwdriver set
•Flashlight
•Gloves
•Vacuum

Parts Required

•Cabin air filter
•HVAC cleaner
•Weather stripping or seals (if damaged)

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Diagnostic Steps

1
Check for error codes using OBD-II scanner
2
Inspect cabin air filter for signs of mold, debris, or blockage
3
Examine battery pack and associated wiring for signs of overheating, burns, or damage
4
Check for water intrusion by inspecting the vehicle for potential water leaks
5
Inspect HVAC system for signs of mold or debris buildup

Solution

1. Preparation

Tools Required: OBD-II scanner, screwdriver set, flashlight, gloves, and vacuum.
Safety Warning: Disconnect the battery before working on electrical components.

2. Clean or Replace Cabin Air Filter

Open the glove compartment and remove it by releasing the side clips.
Locate the cabin air filter cover and unclip it.
Remove the cabin air filter and inspect for dirt, debris, or mold.
If dirty, either clean the filter or replace it with a new one.
Reassemble the cover and glove compartment.

3. Inspect and Clean HVAC System

Access the HVAC system by removing the necessary panels (consult service manual for details).
Check the evaporator core for mold or debris; clean with a specialized HVAC cleaner if necessary.
Inspect any drainage tubes for blockages and clear them to ensure proper drainage.

4. Battery Pack Inspection

Safely remove the rear underbody cover to access the battery pack.
Inspect for any signs of damage, burns, or overheating.
If overheating is present, consult a Tesla technician for further evaluation and potential battery replacement.

5. Address Water Intrusion

Inspect door seals, window seals, and trunk seals for damage.
Replace any worn or damaged seals to prevent further water entry.
Dry any wet areas and clean any mold growth in the affected areas.