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In general, you reset an ECM by commanding it to do so with a scan tool. You can also pull the ECM fuse, with the ignition off, or you can disconnect the battery, for a short period of time. (Varies - a minute or so - but disconnecting the battery also resets the clock, the radio, and possibly other things.) Note, however, that if you are resetting in order to clear the MIL (Check Engine Light) in order to pass an emisions test, the ECM will record the fact that you did so, and you will not pass until the ECM has completed its various IM readiness tests. That takes driving time, and if the fault condition still exists, the MIL will turn back on - you must fix it - not just reset the ECM.
What else can I help you with?
How many valves does the 2003 Hyundai Sonata have?
The 2003 Hyundai Sonata has 16 valves.
Is the 2003 Hyundai Sonata electric or gas?
The 2003 Hyundai Sonata is a gas-powered vehicle.
What size engine does the 2003 Hyundai Sonata have?
The 2003 Hyundai Sonata has an inline 4 engine.
What kind of transmission does the 2003 Hyundai Sonata have?
The 2003 Hyundai Sonata has a 5-speed manual.
How tall is the 2003 Hyundai Sonata?
The height of the 2003 Hyundai Sonata is 4 ft. 8 in. (56 in.).
What is the cam type of the 2003 Hyundai Sonata?
The 2003 Hyundai Sonata has double overhead cam (DOHC).
What kind of fuel does the 2003 Hyundai Sonata use?
The 2003 Hyundai Sonata runs on regular unleaded.
How long is the 2003 Hyundai Sonata?
The 2003 Hyundai Sonata is 15 ft. 6.9 in. (186.9 in.) long.
What is the curb weight of the 2003 Hyundai Sonata?
The curb weight of the 2003 Hyundai Sonata is 3181 lbs..
What is the turning circle of the 2003 Hyundai Sonata?
The 2003 Hyundai Sonata's turning circle is 34.4 ft..
Can i use 2004 Hyundai sonata body parts on a2003 Hyundai sonata?
You cannot use the 2004 Hyundai Sonata body parts on a 2003 Hyundai Sonata.
What is the front shoulder room in the 2003 Hyundai Sonata?
The 2003 Hyundai Sonata has 56.9 in. of front shoulder room.
