The Range Rover Electronic Air Suspension (EAS) is an amazing feature. As we all know however, it can be a very troublesome creature if left unchecked. In the beginning, even I was completely unable and unaware of how to interact with the Range Rover EAS. Over time and primarily due to absolute desperation, I began to study the EAS system avidly. In my opinion, the more information that I could glean about the system, the more money that I could save in the short and long term. My efforts to understand every aspect of the system eventually led to the project of talking to the system and trying desperately to get any kind of communications response.
Over time, communications with the EAS computer were established and slowly but surely we began to build the different layers of the communications protocol. Eventually, a more or less complete understanding of the EAS communications layers were understood. Surprisingly, for something that was so elusive and mysterious, the actual communications protocol is extremely simple and unsophisticated.
Persistence and perseverance were the key to building a complete functional understanding of the system. The knowledge that was gained about the communications protocol was built into a Windows application. After the protocol was built into a windows application, I then decided to build the protocol into a physical microprocessor. To be honest, at the time I knew very little about windows application programming and absolutely nothing about microprocessor coding. The learning process became an obsession. Luckily the outcome was a series of tools and knowledge that I can now pass onto you. It has always been and will continue to be my hope that these tools and knowledge will help keep these wonderful vehicles on the road for decades to come.