why is my Tesla Model S Original (2012-2020) fuel economy suddenly worse

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

436 words

Problem Statement

Discover how to diagnose and resolve fuel economy issues in Tesla Model S (2012-2020). Step-by-step guide for battery and tire checks.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is in park mode before performing any inspections or adjustments.

Symptoms

•Decreased range per charge
•Increased energy consumption displayed on the dashboard
•Frequent charging needed compared to previous usage
•Noticeable decrease in acceleration performance
•Warning messages related to battery health or performance

Diagnostic Steps

1
Check the battery health using the Tesla mobile app or onboard diagnostics.
2
Inspect tire pressures and ensure they are within the manufacturer's recommended range.
3
Review driving habits and check for any recent changes in driving conditions or behavior.
4
Scan for any error codes using a Tesla diagnostic tool or service center.
5
Examine the vehicle for any physical damage or debris that could affect aerodynamics.

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

•Digital tire pressure gauge
•Tesla diagnostic tool

Parts Required

•None (unless battery replacement is required based on health check)

Related Faults

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Diagnostic Steps

1
Check the battery health using the Tesla mobile app or onboard diagnostics.
2
Inspect tire pressures and ensure they are within the manufacturer's recommended range.
3
Review driving habits and check for any recent changes in driving conditions or behavior.
4
Scan for any error codes using a Tesla diagnostic tool or service center.
5
Examine the vehicle for any physical damage or debris that could affect aerodynamics.

Solution

1. Preparation

Ensure the vehicle is parked on a level surface with the parking brake engaged.
Gather necessary tools and safety equipment.

2. Battery Health Check

Access the battery health information through the Tesla app.
If the health status is poor, consider consulting Tesla service for potential battery replacement.

3. Tire Pressure Adjustment

Check the tire pressure using a digital tire pressure gauge.
Inflate or deflate tires to reach the manufacturer's recommended specifications found on the door jamb label.

4. Driving Behavior Assessment

Analyze recent driving patterns for aggressive acceleration or high-speed driving.
Adjust driving styles to include smoother acceleration and braking to enhance efficiency.

5. Error Code Resolution

Connect the Tesla diagnostic tool to retrieve any error codes.
Follow the manufacturer’s guidelines to address specific error codes indicating battery or drive unit issues.