The engine controller, also known as the on-board computer or engine control module, is an important component of the engine management system in a car. Its main task is to control and adjust engine performance parameters, such as power, torque, fuel combustion and exhaust emissions. Damage to the engine control unit can have very different symptoms which can be confusing and difficult to diagnose. Below are some of the most common symptoms of engine controller damage.

An automatic transmission controller gives the driver new possibilities and significantly improves the performance of the vehicle. A transmission controller is a fully self-contained solution, which means that it takes full control of the operation of the gearbox. Such a component makes use of all on-board sensors, and controls up to 12 valves and auxiliary devices to maintain the best driving characteristics while raising the car’s performance to its maximum level.

ABS systems, which are now fitted in cars as a standard feature, shorten braking distances; the system works in pulses, applying the brakes repeatedly for a very short time. This allows the driver to manoeuvre while braking, to avoid an obstacle. In addition to the ABS system, the ESP is also used, which additionally controls the direction of travel, and can adjust braking in the individual wheels so that the car does not deviate from its track. The ABS system uses wheel speed sensors, a pump and hydraulic valves, as well as an ABS pump controller. This is an electronic device that monitors braking based on readings from the sensors.

The engine control unit is an electronic device that monitors the functioning of the drivetrain. It can control the combustion parameters, the fuel-air mixture ration, as well as ignition and fuel injection thanks to a number of sensors located in various parts of the car. It monitors the temperature and many parameters that are important for proper engine operation.

The ABS pump is an essential part of many modern vehicle braking systems. The ABS pump is a safety component that can be found on most vehicles as part of the anti-lock braking system (ABS). The whole system is designed to stop dangerous brake lock-up in hard braking situations, thus preventing skidding and loss of grip. This is particularly important when it comes to helping the driver to maintain full control of the vehicle in difficult muddy terrain and harsh weather conditions such as icy roads or heavy rain.

The gearbox controller controls the gear shift in the vehicle, ensures its smooth operation, it controls the amount of fluids and pressure so that the gearbox works properly. The controller works in combination with many sensors placed in the wheels, checks their rotational speed, and also supervises the work of other elements responsible for the vehicle's drive. As a result of this, it can choose the appropriate gear.