As Tesla vehicles become more advanced, their repairs are becoming more specialized. Traditional tools aren’t enough—complex systems like BMS, high-voltage circuits, and advanced driver assistance need dedicated diagnostics.
That’s where Autel EV diagnostic tools come in. In this guide, you’ll learn about Tesla’s most common issues, repair costs, and how Autel tools like the Ultra EV and MS909EV can help you diagnose and fix them with confidence.
Common Tesla Repair Issues—and How Autel Scanners Help
Here are the most common repair concerns Tesla owners face, and how Autel diagnostic scanners help solve them efficiently.
1. Touchscreen or MCU (Media Control Unit) Failures
Many Tesla features—from climate control to driving modes—are accessed exclusively through the central screen. Failures in the MCU can cause sudden blackouts or system lag.
With Autel:
Tools like the MaxiSys Ultra EV allow technicians to scan for faults in the infotainment system, detect communication errors between modules, and monitor software version inconsistencies.
2. Battery Management System (BMS) Errors
The heart of any Tesla is its high-voltage battery. Errors in thermal control, cell imbalance, or charging calibration can severely impact performance and safety.
With Autel: EV-focused scanners like the MS909EV provide in-depth access to the BMS, showing live data such as cell voltages, state-of-charge, temperature maps, cooling fan status, and more. You can also run active tests on relays and contactors to isolate faults.
3. Suspension & Ride Height Sensor Issues
Model S and Model X vehicles equipped with air suspension may develop ride height inconsistencies or warning lights from worn-out sensors.
With Autel:
You can recalibrate suspension systems, run height tests, and confirm sensor input values using Autel’s bidirectional control features—no Tesla service login required.
4. Charging System Faults (AC/DC)
Sometimes, Teslas fail to start charging or show “charging equipment error” messages. This could relate to onboard chargers, the port, or external equipment.
With Autel:
Run functional tests on AC and DC charging components, test the high-voltage control module, and monitor real-time charge current/voltage to confirm whether the issue lies in the vehicle or the external charger.
What Autel EV Scanners Can Do for Tesla Diagnostics and Repair
Autel has developed EV-specific tools designed to work with Tesla and other electric vehicles. Here’s what they offer:
OEM-Level Diagnostics: Tools like the Autel MaxiSys Ultra EV provide access to Tesla-specific modules including BMS, inverter, Autopilot, and more.
Live Data & Graphing: Monitor battery cell temperatures, voltages, or motor control in real time to pinpoint exact faults.
Bidirectional Control: Run active tests (e.g., open/close contactors, start HV battery cooling fan, or activate charging system) without needing Tesla Service access.
Maintenance Functions: Reset TPMS, calibrate steering angle sensors, service brakes, and more—all from the same tool.
Pre- and Post-Scan Reporting: Useful for shops or DIYers who want to document the vehicle’s condition before and after repairs.
Tips to Minimize Repair Costs
Here’s how you can minimize Tesla repair costs with a few smart strategies.
Start by using diagnostic tools like Autel scanners early—even before warning lights appear—to catch potential issues in advance. With the right tool, you can also handle basic maintenance yourself, such as checking the 12V battery, calibrating sensors, or resetting control modules at home.
Finally, always keep both your Tesla’s software and your diagnostic tool up to date, as Autel regularly releases updates to stay in sync with Tesla’s evolving systems. These simple steps can help you avoid expensive repairs down the line.
Conclusion
Owning a Tesla comes with the perks of cutting-edge technology and low routine maintenance—but it also demands a smart approach to diagnostics.
Whether you’re a DIY Tesla owner or a professional EV technician, investing in a powerful tool like the Autel MaxiSys Ultra EV can help you understand and repair your vehicle with confidence. From reading battery faults to resetting sensor systems, Autel puts advanced diagnostics at your fingertips.