--- title: "Tesla Battery Degradation: How to Check Range Loss | EV Fix Guide" description: "Rated range at 100% charge is lower than when the car was new, and owners want to know whether it is normal aging or a battery fault. Tesla Service: $0 - $200. Independent: $100 - $250. DIY steps, tools and torque specs included." canonical: https://evfixguide.com/guides/battery-degradation-range-loss lang: en last_updated: 2026-10-24 --- [Tesla Model 3](https://evfixguide.com/models/model-3) · [Tesla Model Y](https://evfixguide.com/models/model-y) · [Tesla Model S](https://evfixguide.com/models/model-s) · [Tesla Model X](https://evfixguide.com/models/model-x) · [Tesla Cybertruck](https://evfixguide.com/models/cybertruck) Charging & Range DIY possible # Tesla Battery Degradation: How to Check Range Loss By the EV Fix Guide editorial team · Updated October 24, 2026 · [How we estimate costs](https://evfixguide.com/about#how-we-estimate-costs) ## Quick answer Rated range at 100% charge is lower than when the car was new, and owners want to know whether it is normal aging or a battery fault. At a Tesla Service Center this typically costs **$0 - $200 (Diagnosis; repair covered if within battery warranty terms)**. An independent shop charges about **$100 - $250 (Independent battery health scan)**, and doing it yourself costs **$0 (In-car check)** — potential savings of **Up to 100%**. DIY difficulty: easy (Overnight). ![Range Loss: How to Check Battery Degradation](https://evfixguide.com/assets/images/battery-bench.jpg) ## Symptoms - Estimated range at 100% is lower than the original EPA rated range - Range shown at the same charge percentage has dropped over months or years - Sudden large drop in range or a battery-related alert (more likely a fault than normal aging) ## Repair cost: Tesla vs independent shop vs DIY | Option | Typical cost (USD) | | --- | --- | | Tesla Service Center | $0 - $200 (Diagnosis; repair covered if within battery warranty terms) | | Independent shop | $100 - $250 (Independent battery health scan) | | DIY | $0 (In-car check) | | Potential savings | Up to 100% | Ranges are US estimates compiled from owner reports and shop quotes; prices vary by region, model year and parts availability. Report your price. ## Can an independent shop fix it? Independent EV shops can read battery health data. Gradual capacity loss is normal and not repairable; a sudden drop or an alert should go to Tesla first, since the high-voltage battery has its own warranty with a minimum capacity retention (70% on current vehicles over the warranty period; check your warranty terms). [Get matched with an independent shop →](https://evfixguide.com/?shop=battery-degradation-range-loss#find-shop-section) ## How to fix it yourself (easy, Overnight) You can check degradation yourself by comparing rated range at a full charge to the original figure, and on recent software you can run a battery health test from Service Mode. Never open or work on the high-voltage battery. ### Tools you need - Tesla touchscreen and app - Home charging (for a full charge and the health test) ### Steps 1. Set the battery display to show distance instead of percentage. 2. Occasionally charge to 100% and note the rated range right after charging finishes; compare it to the original rated range for your exact model and wheel option. 3. On recent software versions, enter Service Mode and look for the battery health test. It needs the car plugged in and takes many hours, so run it overnight. 4. Compare results over time rather than relying on one reading, since the estimate can drift. 5. If you see a sudden large drop, a battery alert, or capacity that looks close to the warranty threshold, book a Tesla Service appointment. **Pro tip:** Most capacity loss happens in the first years and then levels off. For daily driving, keep the charge limit at the level Tesla recommends for your battery type, and avoid leaving the car at very high or very low charge for long periods. ## Frequently asked questions ### How much does it cost to fix battery range loss on a Tesla? Tesla Service Center: $0 - $200 (Diagnosis; repair covered if within battery warranty terms). Independent shop: $100 - $250 (Independent battery health scan). DIY: $0 (In-car check). Typical savings versus the service center: Up to 100%. ### Can I fix battery range loss myself? Yes. DIY difficulty is easy and it typically takes Overnight. You can check degradation yourself by comparing rated range at a full charge to the original figure, and on recent software you can run a battery health test from Service Mode. Never open or work on the high-voltage battery. ### Can an independent shop fix battery range loss instead of Tesla? Yes. Independent EV shops can read battery health data. Gradual capacity loss is normal and not repairable; a sudden drop or an alert should go to Tesla first, since the high-voltage battery has its own warranty with a minimum capacity retention (70% on current vehicles over the warranty period; check your warranty terms). ### Which Tesla models are affected by battery range loss? This issue is reported on the Tesla Model 3, Model Y, Model S, Model X and Cybertruck. ## Related guides - [Tesla Phantom Drain: Stop Battery Loss While Parked — Independent: $0 - $150](https://evfixguide.com/guides/phantom-drain-parked) - [Tesla Not Charging at Home: Melted 14-50 Outlet Fix — Independent: $150 - $400](https://evfixguide.com/guides/home-charging-outlet-overheating) - [Tesla PCS_a019 / PCS_a016: AC Charging Limited Fix — Independent: $150 - $500](https://evfixguide.com/guides/pcs-a019-ac-charging-limited) - [Tesla CP_a004: Charging Equipment Not Recognized Fix — Independent: $250 - $600](https://evfixguide.com/guides/cp-a004-charging-equipment-not-recognized) - [Tesla CP_a046: Charging Communication Lost - Fix — Independent: $150 - $600](https://evfixguide.com/guides/cp-a046-charging-communication-lost) - [Tesla UMC_a005: Mobile Connector Voltage Too Low Fix — Independent: $150 - $400](https://evfixguide.com/guides/umc-a005-mobile-connector-voltage-low) This guide is for information only. High-voltage components (orange cables) can be lethal — leave them to trained technicians. Not affiliated with Tesla, Inc.