Should I hear a noise from the rear suspension of my 560 all of the time that sounds like a pump running?

Thanks, Dave.

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Currently Driving:
1986 Mercedes Benz 560SEL
1994 Lincoln Town Car
1994 Cadillac Deville
1985 Lincoln Town Car- Retired

The Official Car of a Realtor- Lincoln Town Car
The Official Car of the Successful Independent Insurance Agent- Mercedes Benz S Class

I believe that you may be hearing the fuel pumps,which is normal.

I hear the same noises from my rear suspension, usually right after starting the car then it goes away...I've always assumed it was air in the suspension leveling system or something...I really don't know.

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Current cars:
2000 ML55 AMG, 174k miles
2003 C240 T-Modell, 202k miles
1995 S320, 207k Miles