I am having an electrical problem that is effecting many things, the following is a description of it. Turn the key to run and everything is pretty normal. Then I start the engine and release the key back to run. Then engine starts and runs normally. But, with the engine running, the radio shuts off, the windows do not move, and the transmission will engage only 1st gear but will not shift up. No codes set. It is like the power is not coming back on after dropping out to start the engine. After the engine is turned off and then the ignition back on, without starting the engine everything is working again. Could it be the ignition switch? Any ideas out there?

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1984 300CD (sold)
1973 220DPK 4 spd (died)
1978 350SL 4 spd gray market
2003 SLK32 AMG
1988 300CE (sold)
1997 E420 (Totaled)
1998 E320 Wagon