I changed this hidden Android Auto setting, and my phone stopped overheating in the car

Published Aug 20, 2026, 8:30 AM EDT Parth, a seasoned tech writer, wields the keyboard (or pen) with finesse to unravel the intricacies of both Windows and Mac operating systems. He has covered evergreen content on mobile devices and computers for multiple publications over the last six years. You can find his work on AndroidPolice, GuidingTech and TechWiser. Whether it’s demystifying system updates, deciphering error codes, or exploring hidden features, Parth’s prose guides readers through the binary maze. When not immersed in tech jargon, you’ll find him sipping chai, pondering the next software review, and occasionally indulging in a friendly debate about mechanical keyboards. Android Auto is one of those features I use almost every time I get behind the wheel, but on longer drives it started causing an annoying problem. My phone would become unusually warm while handling navigation, music, notifications, and a constant wireless connection simultaneously. After testing different methods, I realized the real fix was not inside the obvious Android Auto menus. One overlooked setting on my phone ended up making a much bigger difference than I expected. Android Auto made my phone run hot The obvious fixes barely helped My phone rarely struggles during everyday use, but Android Auto puts several demanding features to work simultaneously. The moment I connect it, the GPS starts tracking my location, Google Maps begins navigating, mobile data stays active, and music streams continuously in the background. At the same time, the phone is usually charging, which introduces even more heat. During short drives, this was not always noticeable, but on longer journeys, the temperature often kept climbing. I initially tried all the usual solutions. I removed the phone case, moved the device closer to the AC vent, lowered the screen brightness, and closed every app I did not need. I also switched charging cables and avoided using the wireless charging pad. I created a routine on my Samsung phone A dedicated driving automation Instead of changing several settings manually before every drive, I created a dedicated Routine on my Galaxy S25 Ultra. I headed to Settings > Modes and Routines > Routines and set Android Auto activation as the condition. From that point onward, my phone automatically switches to a more power-efficient setup whenever it connects to my car. The moment Android Auto starts, the Routine disables the Always-on display and fast charging, switches the performance profile to Light, and enables power-saving mode. I have also adjusted my mobile network settings by switching mobile data from 5G preferred to LTE preferred. This helps prevent unnecessary battery drain, especially in areas with weak or inconsistent 5G coverage where the phone will constantly search for a stronger signal. LTE is more stable in these ‘sketchy’ coverage zones. None of these changes affect the features I actually need while driving. Google Maps, music playback, calls, and notifications continue to work normally, but the phone has fewer demanding tasks running in the background that generate heat. The best part is that the entire process is reversible. As soon as I disconnect Android Auto, Samsung automatically restores all settings to their previous state. Power saving turns off, fast charging becomes available again, the performance profile returns to normal, and the always-on display resumes working. I never need to remember which setting I changed or manually undo anything once I reach my destination. The Routine quietly handles the entire process every time I get into and out of the car. Pixel modes offer a similar approach It’s not as powerful as Samsung’s solution, though Pixel phones offer a similar solution through Driving mode, although the customization options are far more limited than Samsung’s Modes and Routines. If you have a Pixel phone, set Driving Mode to activate automatically whenever the phone connects to your car’s Bluetooth. That means you don’t need to open any settings or remember to make changes before starting a drive. Once the connection is established, the mode disables the always-on display and switches the phone to the dark theme. Turning off the always-on display removes a feature I can’t use while Android Auto is running, while the dark theme helps keep the interface less demanding whenever I need to glance at the phone. These changes are not as extensive as the automation on my Galaxy S25 Ultra, but they still reduce some unnecessary power consumption. It feels like a basic driving preset rather than a full auto system. The difference became obvious on long drives This works better because it is automatic The impact of my Samsung routine became much more noticeable during longer journeys. My Galaxy S25 Ultra still gets slightly warm because Android Auto continues to use GPS, mobile data, navigation, and music streaming. However, it no longer reaches the uncomfortable temperatures I used to experience after an hour or two on the road. My phone now maintains a steadier temperature throughout the drive. Charging remains slow and consistent, performance doesn’t lag, and Android Auto continues to run smoothly without interruptions. Cooler phones, smoother Android Auto drives Android Auto was not the only reason my phone was overheating. The biggest issue was that too many power-hungry features continued running in the background. Creating a Samsung routine or Pixel mode gives you a simple way to automatically reduce that load. I don’t have to remember to change anything before every drive, and my phone stays noticeably cooler. It is a small automation, but it has made Android Auto far more reliable on long journeys.