why is my Tesla Model S Original (2012-2020) using more oil than usual?

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

601 words

Problem Statement

Learn how to diagnose and fix high oil consumption in Tesla Model S (2012-2020). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Allow the engine to cool before working on any components.
•Disconnect the battery before performing electrical repairs.

Symptoms

•Increased oil level depletion between oil changes
•Oil warning light may illuminate
•Unusual engine noise or knocking
•Visible oil leaks under the vehicle
•Poor engine performance or misfiring
•Frequent need for top-ups of engine oil

Diagnostic Steps

1
Check the oil level using the dipstick to confirm excessive depletion.
2
Inspect for visible oil leaks around the engine and undercarriage.
3
Scan for any error codes using an OBD-II scanner for engine-related issues.
4
Examine the engine oil condition for contamination or degradation.
5
Inspect the PCV (Positive Crankcase Ventilation) system for blockages or failures.
6
Conduct a compression test on the engine cylinders to assess internal wear.
7
Review maintenance history for oil change intervals and types of oil used.

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
•Oil filter wrench
•Compression tester
•Oil catch pan
•Pliers

Parts Required

•Replacement PCV valve
•New gaskets or seals
•Engine oil (synthetic, per specifications)
•Oil filter

Related Faults

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Diagnostic Steps

1
Check the oil level using the dipstick to confirm excessive depletion.
2
Inspect for visible oil leaks around the engine and undercarriage.
3
Scan for any error codes using an OBD-II scanner for engine-related issues.
4
Examine the engine oil condition for contamination or degradation.
5
Inspect the PCV (Positive Crankcase Ventilation) system for blockages or failures.
6
Conduct a compression test on the engine cylinders to assess internal wear.
7
Review maintenance history for oil change intervals and types of oil used.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the battery to prevent electrical issues.

2. Inspect and Replace PCV System

Tools Required: Socket set, pliers, replacement PCV valve.
Locate the PCV valve and disconnect any hoses attached to it.
Remove the old PCV valve from its housing.
Install the new PCV valve and reconnect the hoses securely.

3. Repair Oil Leaks

Tools Required: Oil catch pan, wrench set, replacement gaskets or seals.
Identify the source of the oil leak (e.g., valve cover gasket, oil pan gasket).
Use the oil catch pan to collect any remaining oil.
Remove the affected component (e.g., valve cover).
Clean the mating surfaces and install new gaskets or seals as needed.
Reinstall the component and ensure all fasteners are torqued to specification.

4. Change Engine Oil and Filter

Tools Required: Oil filter wrench, socket set, oil catch pan, funnel.
Remove the old oil filter using the oil filter wrench.
Drain the old engine oil into the catch pan.
Replace with a new oil filter and fill the engine with the appropriate oil type (consult the owner’s manual for specifications).
Check oil level with the dipstick.

5. Compression Test (if necessary)

Tools Required: Compression tester.
Remove spark plugs and insert the compression tester into each cylinder.
Crank the engine and record the compression readings.
Compare readings across cylinders; significant discrepancies may indicate internal engine wear.