Land Rover Discovery 4 L319 Sunroof Control Unit Module 5H22-78502D70-AC

Land Rover Discovery 4 L319 Sunroof Control Unit Module is an original component from the Electronic control modules and controllers group, designed for precise management of the factory sunroof operation. This used controller ensures the maintenance of factory operating logic, communication with the vehicle's electrical system, and consistency with the rest of the Land Rover's electronics.

Specifications and technical data

• SKU: 5H22-78502D70-AC
• Mark: Land Rover
• Condition: Used
• OEM Part Number: 5H22-78502D70-AC
• Substitutable numbers: 5H22-78502D70-AC, 5H2278502D70AC
• Part type: Central Timing Module
• Category: ECUs & Computer Modules

Purpose and function in the vehicle

The presented module is dedicated to the Discovery 4 L319 model and is responsible for controlling all basic sunroof functions – from opening and closing, to tilting, and responding to signals from the body electrical system. As an original Land Rover component, it interacts with the vehicle's bus in accordance with the manufacturer's factory specifications. The module belongs to the Electronic control modules and controllers group, which means it is integrated into the comfort and safety system, and its proper operation affects the daily functionality of the car and user comfort.

Benefits of using an original module

Using an original sunroof controller in the Discovery 4 L319 allows for maintaining software consistency and operating parameters with the rest of the vehicle's electronics. This is particularly important in cars equipped with extensive comfort systems, where communication between modules occurs continuously.

• factory fitment for the electrical installation and vehicle architecture,
• preservation of the original sunroof control logic,
• reduction of the risk of communication errors between modules,
• easier diagnostics using service testers. As a result, this module provides a practical solution for sunroof system repairs when restoring proper operation is required without experimenting with aftermarket replacements.

Characteristics of the used component

The offered controller is a used component, which in practice means it comes from disassembly and was previously operated in a vehicle. Such parts are frequently chosen for advanced electronics repairs because they allow for maintaining reasonable service costs while adhering to the manufacturer's original specifications. In the case of electronic modules, it is essential to verify compatibility with the specific vehicle equipment version before installation and, if necessary, anticipate potential adaptation or programming in the vehicle using appropriate diagnostic equipment.

Selection, compatibility, and practical tips

When selecting a sunroof controller for the Discovery 4 L319, it is crucial to match it to the specific vehicle configuration. In practice, this means paying attention to:

• compatibility with the body version and production year,
• connection with the comfort system and other body modules,
• potential requirements for adaptation after installation. To better understand the specifics of installing and selecting used controllers and other electronic components, it is worth checking the Global Parts guide: Used automotive electronics on board – why choose second-hand ECU modules and sensors?. The article discusses, among other things, compatibility issues, selection by part numbers, and practical application examples.

Expanding the control system in your Land Rover

If you are planning a comprehensive repair or upgrade of the body electronics area in your Land Rover and need other components from the same group, such as comfort controllers, door modules, or lighting management units, check out the available parts in the Land Rover electronic control modules and controllers category.