Honda Passport differential fluid leak due to axle displacement after recent maintenance on Honda Passport

Some Honda Passport owners report experiencing differential fluid leaks after recent maintenance, which may be caused by a plugged rear differential vent leading to lubricant leakage and potential damage if not promptly addressed. Symptoms of such leaks include noticing a puddle of fluid under the vehicle or a burning smell while driving. The primary cause of these leaks is often a failure of the mechanical seal of the differential, allowing oil to seep out of the housing. Additionally, inadequate lubrication and poor maintenance can exacerbate rear differential issues, including leaks. To check the fluid level, it is recommended to ensure the rear differential is at normal operating temperature and the vehicle is on level ground, inspecting the fluid level at the filler bolt hole. Prompt attention to suspected differential fluid leaks is crucial to prevent further damage and maintain the vehicle's proper functioning.