My 1994 SL600 with hydraulic suspension started riding rougher than when I bought it 8 years ago, so I replaced all 4 hydraulic accumulators a few weeks ago. It still rides rough over small pavement cracks and holes; this did not help it out at all. The car handles large low frequency bumps nicely, but the small high frequency bumps ride very harshly.

Any tips on what I should check next? I noticed some things that looked like electrically controlled valves near each accumulator. Are these valves supposed to be open or closed during normal driving? Are these valves supposed to have 12 volts going to them during normal driving?

Thank you,
Speedturn
Tom Turner
Rocket City, Alabama