Description
Magneti Marelli RT3eV-N3-Q1 car radio for Citroen C4 Picasso cars of the first series
The radio must be uploaded and set to the car through diagnostics
Tested, fully functional
Part description
The used Magneti Marelli RT3eV-N3-Q1 car radio is intended for Citroën C4 Picasso first series cars. It is an original electrical component that customers often search for by manufacturer designation or part number. Thanks to the markings 96645900XT and 6574CW, the part can be easily located when repairing or replacing the original radio.
The advantage is that the part has been tested and is fully functional. With this type of car radio, it is necessary to take into account that after installation, the radio must be added and set to the car with diagnostics. This is important information, especially for car repair shops and more experienced home mechanics who deal with replacing the original radio with a suitable used one.
Technical information
- Manufacturer: Magneti Marelli
- Model: RT3eV-N3-Q1
- Other numbers: 96645900XT, 6574CW, 6574CX, NFP
Product codes
- Product codes: 96645900XT, 6574CW, 6574CX
- Model name: Citroën C4 PICASSO
Installation recommendations
Warning: It follows from the documents that the radio must be added and set to the car with diagnostics after installation. Below is a general procedure typically applicable to replacing a car radio, the exact steps may vary depending on the specific car model.
1) Before assembly
- Check whether the marking RT3eV-N3-Q1 and the product numbers 96645900XT, 6574CW or other markings on the label match.
- Compare the connectors, attachment points and overall appearance to the old part.
- Inspect the condition of the connectors, pins and front panel for mechanical damage.
- Turn off the ignition before starting work and it is generally advisable to disconnect the battery according to normal service practice and the manufacturer’s procedure.
2) Necessary tools and materials
- Basic set of hand tools
- Plastic pry bar for panel removal
- Appropriate tools for releasing the radio according to mounting design
- Clean cloth for cleaning connectors and surroundings
- Diagnostic equipment for uploading and setting the radio to the car
3) Step-by-step assembly procedure
- Prepare the vehicle for work, secure it against movement and turn off the ignition.
- Dismantle the necessary covering elements or trim around the car radio so as not to damage the plastics.
- Carefully release the original radio from its storage.
- Disconnect all connectors and any antenna leads from the old part.
- Compare old and new car stereos by label, connectors and design.
- If dirty, lightly clean the connectors and check for looseness or damage.
- Connect the connectors to the new car stereo and make sure they are properly seated without excessive force.
- Sit the radio into the mounting position and check that there are no pinched cables.
- Perform the basic mechanical fastening of the part.
- After physical assembly, perform passing and setting to the car with diagnostics as indicated in the documents.
- After the configuration is complete, check the basic functions of the radio.
- Reinstall all removed covers and trim.
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4) Post-assembly checks and function verification
- Verify that the radio turns on correctly and communicates with the car.
- Check the response of the control elements and the basic functionality of the device.
- Monitor for configuration or unit communication errors after assembly.
- After a short run, re-verify the proper seating of the radio and the stability of the connection.
5) The most common assembly mistakes + how to avoid them
- Part exchange based on similar appearance – always check the exact model designation and product codes.
- Insufficiently seated connectors – connect the connectors carefully and check that they are fully seated.
- Damage to wiring when inserting radio – check cable routing before final seating.
- Omission of diagnostic settings – for this part, according to the documents, it is necessary to add the radio and set it to the car with diagnostics.
- Rough disassembly of plastic parts – use appropriate tools to avoid damage to interior parts.
Reasons why the part is damaged
- Wear of electronics and internal components due to long-term operation.
- Damage to connectors or pins during unprofessional disassembly and assembly.
- Voltage fluctuations in the on-board network or incorrect procedure when connecting and disconnecting a part.
- Mechanical damage to the front panel, buttons or radio chassis.
- Moisture, dust or pollution that can negatively affect the function of electronics and contacts.







