I recently purchased a 2010 ML350. The radio works fine but the GPS is flaky, not recognizing many addresses. The Mercedes website lists a map update for $100 but it's from 2017. The website also states that this would be the last update they will offer. Before spending the $100 I tried to determine if the update had already been installed but neither I nor the dealer could find a way to do that so I started looking for an aftermarket replacement unit. I've seen quite a few generic 2 din units but Ebay has a bunch that are designed to be direct replacements for the factory Mercedes unit. Here is an example -
Android 8.1 For Mercedes Benz ML320 GL320 GL350 Car DVD Radio Player Stereo GPS | eBay . There are a dozen listed but all are made in China by a company called Hizpo. I'd like to know if anybody here has used any Hizpo products and how well they worked. We all know how finicky Mercedes' systems are with aftermarket products and I don't want to cause any other issues. If anybody has any suggestions for an aftermarket replacement, from any manufacturer, I'd like to hear about it. In addition to replacing the factory radio and GPS systems I'd also like a unit that works as a dash cam but that is not a critical requirement. Thanks for your help!