You can reset your ECU by: under the dash near the fuse box there is a grey plug. Theres two wires all by them selves. While the cars ignition is on short the two wires out for 2 seconds. This goes into diagnostic mode. You will see the check engine light flash. It should flash 5 times quickly and 5 times slowly consecutively, this means your car is all OK. By doing this it also resets your ECU and without all the problems like alarm, reseting clocks and radios.