Just got back from a few weeks away in France, not without a few problems. On the way down to Canterbury Aire we stopped in a layby for while to stretch legs etc. only to get the ESP/ ABS fault light come on and no ignition. We had this problem last year ( winter) and put the cause down to a blown brake light or loose connection on one of the relays under the dash. After 3/4 of an hour trying to clear the fault rang recovery, when he arrived the fault had disappeared , but switching the ignition off and trying again the fault returned, the RAC guy plugged his machine in and found some errors but nothing useful so he cleared all the faults and recommended that we visit a Merc. dealer ASAP. I'm not sure if its related or not but prior to the ESP fault making its presents felt the central locking had stopped working on the Hab. door, so maybe the ECU has thrown a wobbly due to a fault on the cambus ????. Not wanting to turn round and go home or go to a Merc. dealer and be told it needed ££££££££££££s spent( last year Merc. dealer said it required a new ignition switch) we decided to try and persevere with the fault, so after a night at Canterbury headed for the ferry. We did have a few times when we thought we might be stuck but after three weeks away, not turning off when refilling with fuel we survived our holiday in France. There doesn't seem to be any rhyme or reason as to when the ESP fault happens, we tried all sorts, the only action that seemed to help was when starting to leave the ignition on the first stage for a few seconds before second stage then engaging the starter (always knew if it was going to on the second stage as the glow plug light would come on, no glow plug light = ESP/ABS fault.