Starter motor seems slow getting out of way on <20F days

[kenyee]

Hoping Gilly might have seen this and knows if it's a problem w/ a solution. A few folks on Benzworld also said they hear it.

Basically, on really cold days (below 20F degrees), when you turn the key and let it start, near the end of the start cycle, it sounds like the starter motor is having problems getting out of the way of the engine starting. It happens near the last second or two of the start cycle. You hear almost the same sound as turning your key to the start position on other cars w/o out the "if car has started already, don't let the owner try starting it while motor is running" feature that we have.