Sorry about my earlier misstatement, it's the AAM that's left to change out, or so I was told....

There is a switch in the circuitry that helps with temp. sense that helps the AAM decide whether to turn on the aux. pump.

Gilly, the REST function sounds like what the factory designed to correct my problem. Can that be retrofited on my MY2000?

__________________
Ed "Don't Benz's just feel better..."

Current wives...
2000 ML430 Skyview "The Mel"
2000 CLK430 Cab "The Cab"
85 300D Turbo "The Diesel"

Past wives...
92 300E
85 190E

"One should as a rule respect public opinion in so far as is necessary to
avoid starvation and to keep out of prison, but anything that goes beyond
this is voluntary submission to an unnecessary tyranny, and is likely to
interfere with happiness in all kinds of ways."
Bertrand Russell