Your manual is the primary resource for keeping the NV300 in peak condition: owner's manual
A common NV300 failure is roof rack overloading. The manual states the maximum dynamic roof load (usually 100kg) and the static load (when parked, much higher). nissan nv300 owners manual
If you are converting your NV300 into a camper, read the section on "Extended Parking." The manual explains how to disable the interior motion sensors (for sleeping) and how long you can run the radio before the "Eco-Battery" system shuts it down to prevent a no-start condition. Your manual is the primary resource for keeping
Nissan dealerships (Part number varies by year, approx. $45 USD). Alternatively, eBay often has used copies from wrecked vans. approx. $45 USD). Alternatively