BenzWorld Senior Member
Date registered: Aug 2013
Vehicle: 2003 SL55; 2011 E350 BTC
Location: Battle Ground, WA
Mentioned: 4 Post(s)
Quoted: 71 Post(s)
Welcome back, I guess.
The ABC system did not go through many changes over the life of the R230.
The valve blocks had a change to the valves and solenoids, but reliability is maybe better. They are not as old, so they have not had time to show issues. If fluid is kept clean and fresh, they don’t show many problems.
The ABC pump on later models has a dampener bolted directly to the pump, instead of in the left front fender, but the pump and dampener still have issues at times. All dampeners and accumulators have about a 10-12 year lifespan regardless of miles.
The struts, hoses, and electronics have not changed. Hoses show sign of leaks after 10-12 years or 100K miles, and need rubber sections replaced. Changing the fluid and filter often is expected to extend the life of the pump and valve blocks.
The ABC is an awesome piece of engineering but requires maintenance and care like all moving parts. Nothing compares to its capabilities.
'11 E350 Bluetec P2 Sport 55K Mi.
'03 SL55 AMG Pano 95K Mi.