How to Modify a Car Navigation System?
5 Answers
Use a dedicated plastic pry tool to pry open the edges of the storage box trim panel and remove it. Unscrew the screws beneath the storage box and use a pry knife to remove the decorative strips on both sides. Use a Phillips screwdriver to remove the screws from the central control panel, then hold the main unit with both hands and remove it. Remove the two screws fixing the frame on both sides, pass the dedicated power cable and DVD cable of the car navigation system through the middle of the two air vents, and lay out the GPS antenna. Connect the main power and communication cables of the car navigation system; connect the GPS antenna and fix the car navigation system onto the original CD main unit, then secure the fixing screws.
I've tried modifying the car navigation several times, and the most straightforward way is to buy a new navigation system and install it yourself. First, pick a device online that's compatible with your car model, and prepare wrenches, screwdrivers, and plastic pry tools. Disconnect the negative terminal of the battery to avoid short circuits, then carefully remove the factory center console panel without damaging the clips. Connect the new navigation's power cables and GPS antenna, ensuring everything is securely fastened. After installation, power it on to test the screen and maps, then update the software to finish. It usually takes two to three hours and saves a few hundred dollars, but be careful not to interfere with the steering wheel control buttons or trigger error codes. Watch tutorials before starting, and choose a higher-quality brand head unit to reduce risks.
Be cautious when modifying the navigation system. I've seen cases where incorrect wiring caused module burnout. It's best to have it done by a professional modification shop—they have the expertise to avoid mistakes and can also debug compatibility issues. DIY attempts carry high risks, potentially voiding warranties or even causing electrical leaks. When choosing equipment, don't just go for the cheapest option; ensure it supports expansion features like Bluetooth or CarPlay. For safety, always check if airbags function normally after installation, and consider adding fuse protection for the circuit if necessary.
A simple modification method is to use an external portable navigation device or a phone mount, which is cost-effective and hassle-free. Alternatively, you can just replace the original factory map card to update the software. Hardware modifications are more labor-intensive and may require spending over a thousand yuan on a new system, not to mention the installation time. Prioritize evaluating your needs; if navigation is only used occasionally, upgrading may not be worth it.
Nowadays, navigation system modifications increasingly integrate smartphone mirroring technologies, such as adding a CarPlay module. After installation in the center console, it connects directly to the phone for screen projection, eliminating the need for map updates. Opting for a wireless adapter simplifies cable clutter and supports voice control for added convenience. New devices cost around a few hundred yuan, install quickly, are compatible with mainstream car models, and only require testing Bluetooth stability.
