If you’ve been having trouble starting the engine in your 3rd generation (2014, 2015, 2016, 2017 & 2018) Toyota Highlander on a cold morning and the original “OEM” 12 volt car battery is a few years old, you probably need to replace it. Check out my DIY tutorial for changing a dead 12V car battery (with the compatible group size and replacement part numbers) by clicking on the text link or thumbnail image below.
2014-2018 Toyota Highlander 12V Automotive Battery Replacement Guide
