Just like with any A/C it's important that the filter be replaced every year to help make sure that it works properly. Not doing so can result in a lackluster A/C and bad air quality for you and others. The same holds true for car A/Cs as well. Not changing the air filter can be bad for the vehicle and lead to avoidable damage. So in this tutorial, you'll find out how to replace an A/C cabin air filter on a BMW E60 5-series. Good luck and enjoy!