Hi, I know, I only pop by when I want something Dear Dr MBClub, can you help? Last week I reversed up a steep hill to park, stopped for 5 minutes then found that the engine wouldn't start. It coughed a bit. I let it rest for a minute or so, tried a few more times and it was still the same. Then one more try and it started instantly, as if there'd been no problem at all. It played the same trick on the flat a couple of days ago, and did the same tonight at the garage, though with motorists behind me waiting to use the pump it of course took a lot longer to get going. In fact, I was starting to run out of hope when it cranked as if completely dry. Again, when it did work it started completely normally, smoothly. It has started fine from cold all the time. I found this in the archives http://www.mbclub.co.uk/forums/683411-post1.html but the OP didn't say whether the crank sensor was the fix. I found this one too http://www.mbclub.co.uk/forums/257035-post1.html but the symptoms are different in that johnjohn 98's car started and then stopped. I'd welcome any further clues.