Audi Q5 8R 2.0 TDI 170HP Quattro Engine Control Module ECU 03L906019AS Automatic

Audi Q5 8R 2.0 TDI 170HP Quattro Engine Control Module ECU is a factory control module from the Electronic control modules and controllers group, designed for the drivetrain with all-wheel drive and an automatic transmission. It is responsible for the precise management of the 2.0 TDI unit, ensuring stable engine characteristics, proper throttle response, and correct cooperation with the vehicle's other electronic systems.

Specifications and technical data

• SKU: 03L906019AS-2
• Mark: Audi
• Condition: Used
• OEM Part Number: 03L906019AS
• Substitutable numbers: 03L906019AS, 03L 906 019 AS, 0281016698, 0 281 016 698
• Gearbox type: Automatic
• Part type: Engine Control Unit (ECU)
• Category: ECUs & Computer Modules

Purpose and function of the controller

The engine control module (ECU) in this version has been designed specifically for the Audi Q5 8R configuration with a 2.0 TDI 170HP engine, Quattro drive, and automatic transmission. The module coordinates key operating parameters of the powertrain, such as fuel dosage, injection timing, and communication with onboard systems, which translates into predictable performance and comfortable operation in daily driving. Thanks to its adaptation to the specific drivetrain configuration, it ensures consistent operation of the engine–transmission–all-wheel drive system, which is particularly important in vehicles with advanced electronic controls.

Benefits of using an original ECU

Using an original controller from the same model group allows for maintaining the factory logic of the engine and automatic transmission. In practice, this means:

• maintaining acceleration characteristics in accordance with the manufacturer's specifications,
• proper cooperation with safety and comfort systems,
• consistent communication within the vehicle's CAN network,
• the possibility of further diagnostics using standard service tools. This solution is particularly recommended for repairs following engine electronics failure, when the goal is to restore factory operating parameters without experimenting with replacements of uncertain compatibility.

Integration with the automatic transmission

The presented controller is prepared for cooperation with the automatic transmission used in the Audi Q5 8R 2.0 TDI 170HP Quattro. Appropriate maps and software enable smooth data exchange between the engine ECU and the transmission control module, which affects:

• smooth gear shifting in various driving modes,
• stable idle speed during starting and stopping,
• better cooperation with driver assistance systems. As a result, the drivetrain behaves predictably both in city traffic and during highway driving.

Product characteristics and service application

The offered item comes from the Electronic control modules and controllers group and is intended for service applications in Audi vehicles. It is suitable for replacing a damaged ECU, repairs after flooding, electrical surges, or other engine electronics faults, where it is necessary to use a module consistent with the factory specification. Before installation, it is recommended to verify compatibility by part number and configure the controller in the vehicle (adaptation, potential coding) in accordance with service procedures to ensure full functionality of all systems. If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other components from the same group, such as control modules, auxiliary controllers, or powertrain management units, check the available parts in the Audi electronic control modules and controllers category.

Choosing a used ECU and additional materials

When selecting a used engine controller, it is crucial to match it by part number, software version, and vehicle configuration. Proper selection helps avoid problems with starting the engine, communication errors in the vehicle network, or functional limitations. To better understand what to pay attention to when purchasing control modules and sensors from the secondary market, it is worth reading the guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?. There, you will find practical tips regarding selection by VIN/OEM, hardware and software compatibility, and example installation scenarios.