Diagnostics Tesla

The engine control unit is a key component for the proper operation of the internal combustion engine. It manages combustion processes, ensures optimal performance, and maintains compliance with emission standards. The ECU responds to driver inputs and current operating conditions through numerous sensors and actuators.
Using diagnostics, it is possible to read and clear fault codes, monitor live data (e.g. fuel pressure, temperatures, engine speed), perform actuator tests (injectors, ignition coils, EGR), initiate diesel particulate filter regeneration, or carry out adaptations after component replacement.

This control unit manages the vehicle’s braking safety systems such as ABS, stability control (ESP), and hill-hold functions. It monitors the condition of individual wheels, braking system activity, and stability interventions during driving.
Diagnostics allow reading of fault codes, viewing sensor data (wheel speed, brake system pressure, pedal position), performing actuator tests, carrying out guided bleeding procedures, and other related functions.

The Body Control Module manages the vehicle’s comfort and auxiliary functions such as lighting, wipers, locking, turn signals, alarm, and remote control. It acts as a central hub for numerous sensors and switches.
Diagnostics allow configuration of functions (e.g. automatic wipers, coming/leaving home), testing of output signals (e.g. relay activation), reading sensor data, coding of new components, and real-time monitoring of input and output states.

This control unit is responsible for activating airbags and seatbelt pretensioners in the event of a collision. It monitors signals from crash sensors and determines when to deploy the protective systems.
Using diagnostics, it is possible to read the event memory (e.g. crash data), check individual circuits (resistance values, open circuits, short circuits), deactivate the passenger airbag, verify seatbelt pretensioner connections, and for certain types, clear crash data or register new components.

The electronic parking brake (EPB) replaces the traditional handbrake with a motor controlled by the control unit. It enhances comfort and safety, as it can be integrated with the hill-start assist system.
Diagnostics allow activation and release of the brake in service mode (e.g. brake pad replacement), testing of the brake motor, monitoring of the actuator status, and performing calibrations after component replacement.

The instrument cluster displays essential operational information such as speed, engine RPM, fuel level, fault messages, and service intervals. It is often connected to the vehicle’s central network and serves as the user interface.
Diagnostics allow testing of needles and displays, setting service intervals, configuring displayed information, coding after unit replacement, and reading faults related to the display or communication with other control units.

This unit provides parking support using sensors and cameras, and in some cases semi-automatic steering. It assists with obstacle detection, calculating available space, and guiding the vehicle.
Diagnostics allow camera calibration, reading sensor values, testing display and alerts, configuring warning methods, and adapting the system after component replacement.

Each door may have a separate control unit that manages windows, locks, mirrors, lighting, and is linked to functions such as keyless entry or child lock.
Diagnostics allow testing of motor functions, button controls, lock feedback, reading the status of limit switches, and configuring comfort features (e.g. window auto-close when locking).

The electric power steering system adjusts the force required to turn the steering wheel. It responds to vehicle speed and axle load.
Diagnostics allow monitoring of the torque applied to the steering wheel, voltage and current of the power steering motor, calibration of the steering angle, testing of mechanical components, and reading faults such as overheating or system overload.

This unit manages multimedia, navigation, connectivity, and communication with the driver and passengers.
Diagnostics allow system reset or update, monitoring the status of connected devices (USB, Bluetooth), testing speakers and displays, checking for player or connectivity module faults, and modifying configurations according to vehicle equipment.

This system manages and protects the high-voltage battery in electric and hybrid vehicles. It monitors state of charge, cell health, and system safety.
Diagnostics allow monitoring of individual cell voltages and temperatures, calculating battery life (SoH), controlling cooling and heating, tracking charge cycles, recording events, and performing control software adaptations.