Problem Statement
Learn how to identify battery degradation in Tesla Model S (2012-2020). Step-by-step diagnostic guide with symptoms, tools, and safety tips.
how to identify battery degradation in my Tesla Model S Original (2012-2020)
Tesla Model S Plaid/Refresh (2021-present)
2-4 hours
Time
medium
Difficulty
medium
Severity
3 min read
522 words
Affected Component
Electrical
Estimated Time
2-4 hours
⚠️ Safety Warnings
Important safety information - read before proceeding
- •Always disconnect the battery before working on electrical systems to prevent shock.
- •Allow the battery to cool down before inspection, as it may become hot during use.
Symptoms
- •Decreased driving range compared to original specifications
- •Longer charging times
- •Frequent need for charging on short trips
- •Battery health percentage lower than expected (usually below 70% after several years)
- •Warning messages related to battery performance or capacity
Diagnostic Steps
- 1
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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
- •Multimeter
- •Tesla app
Parts Required
- •Potential replacement of battery modules (if degradation is significant)
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