good afternoon all, A bit of help if you can. Just fired up the old S Class after not moving for weeks. The battery had been connected to the Optimate and after a few cranks, she stuttered and fired up. Went to the fuel startion to top up and put air in the tyres so only a couple of miles of a run, no heater, lights etc on keep the battery good to crank up when leaving the fuel station. Anyway, cranked her up, a bit slow, but fired. Left her ticking over for 2-3 mins and then it just stopped. Turned her over again, cranked over at normal speed and fired up, revved her a bit and then she stopped again. No coughs or judders, just like turning off the key. 3rd time, she fired up, ticked over for a few mins and then risked the trip back home with no problems. Started and stopped her a few times back at home and all seems OK. What do you think, Damp? just strange there was no judder or cough and splutter, all the guages just went down which makes me think electrical Thanks for reading.