The battery in yer remote goes flat.......ok it wont open the central locking......but as far as i know thats about it....then if you use the key to open the doors, the alarm will go off but shut up as soon as you put the key in the ign....and everything else okay dokie.....
Just been outside in neighbours garage....dunno why havent had me dinner yet!

He's got a merc c250 diesel........same as the one i had but mine was 2.2 (his is 2.5) ..... battery seems to be iffy in his remote...ie when you press the buttons the led lights dimly....
Difference between omega and merc when yer remote battery goes flat.......the merc wont start!!
Omega keys have a blade.....merc doesnt...it has a stubby plastic bit that you shove in a slot.....and turn.......problem is with a flat battery in the key....it carnt commicate via infrared to let the merc know the right key is in the slot!!
He's not going anywhere until he gets the battery changed!
Mad innit......for the sake of a quid battery......merc is dead!!
And hes only got the one key
