With repair opportunities now opening up to the aftermarket on a large number of Tesla vehicles, understanding how the Tesla diagnostic process can differ is important for independent garages. 

Bosch ESI [tronic] is a customised diagnostic solution that supports the challenge of diagnosing Tesla models S, X, Y and Model 3. These models use different solutions for diagnostics and service work compared to that of traditional vehicle manufacturers. 

ESI [tronic] can utilise vehicle based diagnostics to manage the high performance computers in Tesla vehicles. This allows for full service and diagnostic tasks to be performed. Work can be logged and saved as usual. All data received from the vehicle can also be logged.

ESI [tronic] can also read all error messages and repairs, perform tasks, functions, tests and adaptions offered by the car, live stream actual values, provide guided instructions and access original documents of the manufacturer for error message and repairs. 

By switching from ECU-based diagnosis to vehicle diagnosis, due to use of HPCs (High-Performance Computers) in the vehicle the technician can; 

• Gain a one sight overview of the alerts and errors in the car with links to the original troubleshooting instructions.
• Perform adjustment, maintenance and repair tasks, e.g. brake pad replacement or 12V battery change.
• Display a series of live actual values.
• Access a pre-filtered list of service-relevant tasks with links to the necessary instructions.
• Log all data and work on the Tesla vehicle with the ESI[tronic].
• Access integrated repair information from Tesla under the Original documents function in ESI[tronic]
• Display service and repair information for the vehicle. 
• Perform tasks directly on the vehicle without leaving the Original documents
• Print manuals for flexible working

Connectivity is also straight forward. Vehicle models up to 2023 are connected to the KTS 560/590 via a special adapter and an additional cable. Vehicle models up to 2024 are connected directly to a KTS 560/590 as usual via the OBD interface. No additional cable is required.

Connection from a network plug on PC/Laptop/DCU to Ethernet-Plug in Tesla is also possible with Tesla specific adapters. Plus since software update 2025/1, full support is available on Model 3, Model Y, Model X and Model S.