The RT3-N3-10 head unit is a factory multimedia radio originally fitted to Peugeot vehicles. It offers CD and MP3 playback, integrated navigation and GSM connectivity for hands-free and data functions. This unit is commonly sought under part numbers 96601833YW, 657477 or 657478, so customers and workshops frequently search by these codes when sourcing replacements.

The radio performs the central role in in-car infotainment: AM/FM reception, CD/MP3 playback, route guidance via onboard navigation and telephone connectivity via the GSM interface. The unit communicates with the vehicle CAN bus and often interfaces with steering wheel controls, external microphone and the vehicle antenna. Because the unit must be coded to the vehicle, a diagnostic tool is required after installation to restore full functionality (e.g., phone, navigation routing and vehicle integration).

Technical Information

• Manufacturer: Stellantis (Citroën/Peugeot)
• Model: Peugeot 407 (2005)
• Product Codes: 96601833YW
• Additional Numbers: 657477, 657478, RT3-N3-10

Recommended Installation

Installation should be performed by a skilled technician or experienced DIYer with knowledge of vehicle electrical systems. Typical replacement steps:

• Disconnect the vehicle battery before starting to prevent short circuits.
• Remove surrounding trim panels and unscrew the factory bezel to access the radio cage.
• Carefully slide out the unit, disconnecting the main wiring harness, antenna lead and any external connectors (microphone, GPS antenna, etc.).
• Fit the replacement unit, reconnect all plugs and secure the radio in the cage.
• Reconnect the battery and perform the coding/pairing procedure with a compatible diagnostic tool (factory-level software such as DiagBox/PP2000 or equivalent) so the radio is recognized by the vehicle and full functions are restored.
• Verify audio, navigation, GSM/hands-free, steering wheel controls and antenna reception before refitting trim.

Most Common Failure Causes

RT3 units age and fail for several common reasons:

• Mechanical wear of the CD mechanism leading to read errors or failure to load/recognize discs.
• Electronic faults such as failed capacitors, solder joint cracks or power supply problems causing intermittent operation or complete loss of function.
• Moisture ingress or corrosion, particularly in vehicles exposed to humid conditions, which can damage connectors and internal boards.
• Voltage spikes or improper jump-starting that damage internal electronics.
• Obsolete software or lost vehicle coding after unit replacement—without proper coding the unit may not provide navigation or phone functions.

Given the vehicle age, expect these units to be more susceptible to mechanical wear and electronic deterioration. Replacing the radio with the correct part number and performing a proper diagnostic coding procedure restores full integration with the vehicle systems.

This specific model is compatible with the 2005 Peugeot 407, providing superior sound quality and seamless navigation features that elevate your travel experience.

Technical Information:

• Manufacturer: Citroën, Peugeot
• Model: RT3-N3
• Product Codes: 96559851YW, 96565708YW, 657475
• Additional Numbers: 657476, 657478

It’s important to replace this car radio if you experience issues with audio quality or functionalities. Common failures may include malfunctioning navigation systems or audio output problems, generally due to wear and tear over time. Regular checks and timely replacements can prevent further complications, keeping your vehicle’s sound system in top condition.

To successfully link the radio to your vehicle, diagnostics must be performed. This radio is specifically compatible with the Peugeot 407 model from 2005, making it a great choice for Peugeot owners looking to replace or upgrade their audio system.

The Citroën Peugeot RT3-N3 is known for its durability, often needing replacement due to wear and tear on electronic components. Regular use and exposure to varying temperatures can lead to issues over time, making an upgrade essential for maintaining optimal performance.

Technical Information

• Manufacturer: Citroën, Peugeot
• Model: RT3-N3
• Product Codes: 96565708YW, 96559851YW
• Other Numbers: 657475, 657478, 657476