To read the temperatare outside the vehicle, press and hold the knob 
Press and hold the knob 
Press and release the knob 
The temperature Sensor Lead must be connected (option).
If you switch the temperature reading mode to the other mode (EX. Tape mode 
CD changer mode), the display will show that mode for 5 seconds and then resume the temperature reading.
The display will show "TAPE 
Press and hold CQ-4500U, CQ-4300U specifications
The Panasonic CQ-4300U and CQ-4500U are two prominent models of in-dash car audio systems that have captured the attention of car enthusiasts and tech-savvy listeners alike. Both models represent a blend of advanced technology, user-friendly features, and durable construction, making them suitable for a wide range of vehicles.The CQ-4300U boasts a robust design that complements various dashboard styles. It features a fully detachable faceplate, providing an added layer of security against theft. Its easy-to-read LCD display enhances usability, allowing users to quickly navigate through settings and track information. The unit supports CD playback, and is compatible with CD-R/RW formats, ensuring that users can enjoy their favorite music collections without hassle.
In terms of sound output, the CQ-4300U employs a built-in high-power amplifier, delivering clear audio with potent bass and crisp highs. Users can easily adjust sound settings with the built-in equalizer, which offers multiple presets to tailor the audio experience to personal preferences. Additionally, the system includes preamp outputs for adding external amplifiers, enhancing the overall sound quality for audiophiles.
The CQ-4500U, while sharing many similarities with the CQ-4300U, takes things a step further by integrating additional technologies. It features a more advanced CD player with enhanced playback capabilities for various file types, such as MP3 and WMA, offering greater flexibility in terms of media sources. The system is also equipped with a dedicated USB port, allowing users to connect and play music directly from flash drives, ensuring that their favorite playlists are always accessible.
Both models support AM/FM radio, featuring a digital tuner that provides improved reception and a wider variety of channels. They also include direct access buttons for easy station tuning and a memory function that allows users to save their favorite stations for quick access.
In terms of connectivity, the CQ-4500U offers auxiliary input via a 3.5mm jack, making it easy to connect smartphones or other external devices. Additionally, the Bluetooth compatibility available in some configurations allows for hands-free calling and wireless music streaming, aligning with modern consumer expectations for connectivity.
Durability and ease of installation are also key characteristics of both the CQ-4300U and CQ-4500U. Designed to withstand the rigors of automotive environments, both systems are built with high-quality materials that resist wear and tear. Their standard DIN size makes them compatible with most vehicles, simplifying installation for both professional and DIY car audio enthusiasts.
In conclusion, the Panasonic CQ-4300U and CQ-4500U represent solid choices for users seeking reliable and feature-rich car audio systems. With their blend of advanced technologies, user-friendly interfaces, and high-quality sound performance, they cater to a diverse range of audio preferences and enhance the in-car listening experience.