E240 engine problem

Problem is this: Start car back out of garage, close garage port, get in car try to drive away. When pressing the pedal nothing happens. Mercedes manual
says if this happens turn of engine what for 10 second then restart. After restart everyhing is fine car drives like normal. This has happened 2 times now. And one time car would'nt go past 20 mph. After filling fuel (stopping and restarting engine) everything was fine again. Any ideas what this can be? Manual says: go to Mercedes garage, but that's probably not cheap :) Car is 99 E240 58K
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The good news is that M-B acknowledges the fault so the M-B shop should be able to repair it quickly and without the usual "let's replace this, and if that doesn't fix it then we'll replace that" of course all at the customers' expense. The car's computer may have stored a fault code that will confirm the problem.
Before authorizing the repair, ask if the M-B shop has a "Technical Service Bulletin" on this fault so their attention will be focused on the specific matter.
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