if you have the red door keys with the alarm switch built into the key then yes I think you should have. Mine is a 1996 this has the master key. I think I read somewhere on here which suggested the older 155s do not have a master key
went had a good look burgandy,wine colour.
new exhaust,electric sun roof, etc. light colour interior ex condition,engine sounds real good, no service history, wheels bit crappy, 8 inch scrape on rear drivers door. £675.00. thinking about buying for missus,its a skinnyi'll sleep on it after a few beers cheers