It would be helpful to know what year your Seraph is.
Even though there isn't a Check Engine Light (CEL) it is still entirely possible that the car has a code or codes stored in OBD-II. Only certain issues trigger the CEL, but many put out codes that can be read with a random OBD-II/CAN reader.
Also, it would be helpful to know far more precisely under what conditions the warning chimes are triggered. Does this happen only once you've reached a certain speed, for instance, or will it occur when backing out/pulling in to your driveway or when sitting still and turning the wheel?
My first step would be to get the codes read from the on-board diagnostics.