ignition key buzzer won't turn off

It may be the glow plug timer relays. There are two and they are located in it the small fuse box just behind the big one under the hood. To confirm the fault, look at the front of the engine where the intercooler pipe (a big black one) goes down onto a metal block square in shape. On the right side of this block are two connections: connect one end of a jump lead onto this connection and the other end onto the positive terminal on the battery. Count to ten then remove the lead from the battery. Do this again and have a assistant start the car it should work.