High all I'm looking for suggestions. 1996 sl 500 80k on the clock . The condition I'm about to describe is intermittent. Lately it has become more common. Symptoms; turn key engine starts. Idle is erratic. push accelerator to the floor no change in engine speed. ASR and ESP lights are on. Switch off the engine. Restart the engine it runs and drives fine. No warning lights of any kind. If the engine is warm and I start it and get the erratic idle I can get the symptoms to disappear by turning the key toward off and quickly back to run. The throttle body was replaced 8k ago by the PO. The wiring harness looks good. Any ideas?