My '99 ML430 was running fine when I left it for extended storage of 7 months. The negative battery cable was disconnected. I have just reconnected the negative cable and tried to start it. Motor turns over and all functions seem to be OK. I thought that battery voltage might be the problem so the battery was slow charged. Voltage is 12.6V, but it is not starting. I've checked the obvious fuses(fuel pump, coils, etc) and all looks good. The vehicle is in Mexico, 100 km from the nearest MB dealer, so I'd like to try and solve this with the help of this forum. Any suggestions most appreciated.