why is my Tesla Model S Original (2012-2020) getting poor fuel economy

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

509 words

Problem Statement

Learn how to diagnose and fix poor fuel economy issues in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is powered down before performing any inspections on electrical components.

Symptoms

•Decreased electric range compared to manufacturer specifications
•Frequent need to recharge the battery
•Unusual or increased energy consumption readings on the display
•Sluggish acceleration or reduced overall performance
•Warning lights related to battery or energy management systems

Diagnostic Steps

1
Check the vehicle's energy consumption statistics via the Tesla display.
2
Inspect tire pressure and tread condition for proper inflation and wear.
3
Scan for error codes using Tesla's diagnostic tools or mobile app.
4
Review battery health and capacity through the vehicle's system settings.
5
Examine the drivetrain and power electronics for any signs of overheating or malfunction.
6
Verify software version and check for any available updates that may address efficiency issues.

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

•Tire pressure gauge
•Air compressor
•Tesla diagnostic software or mobile app
•Visual inspection tools (flashlight, basic hand tools)

Parts Required

•Replacement tires (if needed)
•Replacement battery (if applicable)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the vehicle's energy consumption statistics via the Tesla display.
2
Inspect tire pressure and tread condition for proper inflation and wear.
3
Scan for error codes using Tesla's diagnostic tools or mobile app.
4
Review battery health and capacity through the vehicle's system settings.
5
Examine the drivetrain and power electronics for any signs of overheating or malfunction.
6
Verify software version and check for any available updates that may address efficiency issues.

Solution

1. Preparation

Gather necessary tools and ensure the vehicle is parked on a flat surface.
Ensure the vehicle is in "Park" mode and the key fob is nearby.

2. Tire Inspection and Maintenance

Tools Required: Tire pressure gauge, air compressor
Sub-steps:
1. Check tire pressures using a tire pressure gauge.
2. Inflate tires to the recommended pressure as indicated on the driver’s door jamb sticker.
3. Inspect tires for uneven wear or damage; replace if necessary.

3. Battery Health Check

Tools Required: Tesla diagnostic software or mobile app
Sub-steps:
1. Access battery health information through the vehicle's touchscreen.
2. Note the current capacity and compare it to the original battery capacity.
3. If capacity is significantly reduced, consider contacting Tesla for a battery replacement or service.

4. Software Update

Tools Required: Tesla mobile app or in-car touchscreen
Sub-steps:
1. Check for software updates under the "Software" menu on the touchscreen.
2. If an update is available, initiate the installation process while the vehicle is parked and plugged in to a charger.

5. Drivetrain Inspection

Tools Required: Visual inspection tools (flashlight, basic hand tools)
Sub-steps:
1. Inspect the electric motor and associated wiring for any signs of wear or damage.
2. Check for any overheating components; if overheating is noted, further diagnosis may be required.