Cold running problems

[valgeo]

I have a 1997 E class E200 estate, which has a problem driving when cold. It seems as though you are driving with the choke full out coupled with a very rich smell from the exhaust. The car has to be left to tick over until the engine gets up to temp. then it drives not too bad. Some time ago through not being used the battery ran completely flat. The cruise control has not worked since the battery went flat. Could the cold running problem be connected. Someone suggested that aged Faults might need reset. Can anyone advise please.