why does my Tesla Model S Original (2012-2020) have poor fuel economy?

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

437 words

Problem Statement

Discover how to diagnose and improve poor energy efficiency in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and solutions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always ensure the vehicle is in 'Park' before performing any maintenance tasks.

Symptoms

•Significant decrease in driving range per charge
•Frequent need for recharging
•Battery drain occurring faster than expected
•Higher energy consumption rate (measured in Wh/mi)
•Unusual battery temperature readings

Diagnostic Steps

1
Use the Tesla app or touchscreen to check energy consumption statistics over recent trips.
2
Inspect tire pressure using a tire pressure gauge; ensure they are inflated to the recommended PSI.
3
Review vehicle settings to check for any active energy-consuming features, such as seat heaters or cabin conditioning.
4
Check for software updates and ensure the vehicle is running the latest firmware.
5
Scan for any error codes relating to the battery or energy systems using Tesla's diagnostic tools.

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
•Laptop or tablet for software updates

Parts Required

•None specifically required unless tires need replacement or repair.

Related Faults

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Diagnostic Steps

1
Use the Tesla app or touchscreen to check energy consumption statistics over recent trips.
2
Inspect tire pressure using a tire pressure gauge; ensure they are inflated to the recommended PSI.
3
Review vehicle settings to check for any active energy-consuming features, such as seat heaters or cabin conditioning.
4
Check for software updates and ensure the vehicle is running the latest firmware.
5
Scan for any error codes relating to the battery or energy systems using Tesla's diagnostic tools.

Solution

1. Preparation

Ensure the vehicle is parked on a flat surface with the parking brake engaged.
Gather necessary tools: tire pressure gauge, laptop or tablet for software updates, and charging equipment.

2. Tire Pressure Adjustment

Sub-steps:
1. Remove the valve cap from each tire.
2. Use the tire pressure gauge to check the current pressure of each tire.
3. Inflate tires to the manufacturer's recommended PSI (usually found on the driver’s door jamb).
4. Replace the valve caps securely.

3. Software Update

Sub-steps:
1. Connect the vehicle to Wi-Fi.
2. Navigate to the 'Software' tab on the touchscreen.
3. Check for available updates and follow on-screen instructions to install them.
4. Allow the car to reboot if required.

4. Energy Consumption Settings

Sub-steps:
1. Access the 'Controls' menu on the touchscreen.
2. Navigate to 'Driving' settings and deactivate any unnecessary features (e.g., heated seats, climate settings).
3. Enable 'Chill Mode' for more efficient driving dynamics if desired.