How-to Guides

The Flexible Service System (FSS) tracks oil condition and notifies you when it’s time for an oil change. The system must be reset after every oil change. If you change your oil at the dealer, they reset this for you. If you change your own oil, follow these instructions to reset your oil life monitor.

The Mercedes E-class air conditioning is a complicated system of blower motors, computers, relays, switches, and refrigeration parts. With a system this complex, it’s likely that you’ll encounter an air conditioning problem at some point during your ownership. Thankfully, the onboard climate control computer has a self-check mode that can help you quickly diagnose air conditioning problems.

To make troubleshooting easier, I’ve written a software program that will analyze the results of your climate control self-test. All you need to do is follow the instructions, enter the values and trouble codes, and (hopefully) get your diagnosis.