This video shows how to flush the ABC (active body control) system in a 2012 Mercedes Benz S65. I purchased 11 liters of Pentosin hydraulic fluid at the local Mercedes dealer for this job. I also used the AGA tool that greatly simplifies the job. It plugs into the bottom of the reservoir where the filter normally connects and then allows all of the return fluid that would normally go through the filter and into the reservoir to go into a 5 gallon bucket. This eliminates the need to disconnect that return line from the bottom of the reservoir, which is difficult to get to. I used the Mercedes Star system to actuate the suspension in "rodeo" mode to warm up the fluid after driving the car for about 20 minutes. The service instructions call out 15 minutes of rodeo mode but after the drive it seemed like it only took a few minutes and then the rodeo mode stopped. One important thing to do is to remove as much fluid as possible from the reservoir before starting the flush procedure. There were about two liters of dirty fluid in there. Then re-fill with clean fluid before starting the flush since that is the fluid that will be pumped through the system flushing out any old fluid. Be sure to have the caps loosened before starting so you can rapidly grab each liter container and not get slowed down trying to break the anti-tamper seal.
10 авг 2019
