Hi just because it has not got stop start it will need to be coded as the stop start has nothing to do with this, but the battery energy monitor does and thats what controls the charging from the alternator, with regard to the clutch position sensor I am not sure what type you have if its on the pedal its clearly visible and will be sitting just above the pedal so when you press the clutch down you will see the little pin in the unit start to drop down, if the sensor is on the clutch master cylinder you have to change the whole unit, easiest thing to do is get the vehicle scanned for faults as I am sure that will tell you straight away as at the moment it could be a starter, crank sensor, clutch switch, sorry I can't be of more help.
Steve.