I went to the Mitsubishi dealer today to have them cut and program a key for my 2003 Galant. They get over 90 bucks for this so it may be helpful to get a third key and program it yourself just in case you lose it. (I didnt have a second key from the previous owner) The key blanks are about 20.00 purchased online and a decent locksmith locally should be able to cut it for a dollar or two.
Info I gleened from this website: (
Customer Key Programming
You can program new keys to the system if you have two valid (already registered) keys by doing the following:
- Insert the first valid key into the ignition and turn the ignition to the "ON" position for 5 seconds.
- Turn the ignition to the "OFF" position and remove the first key.
- Insert the second valid key and switch the ignition to the "ON" position within 7 seconds. Theft-alarm indicator will blink twice. Turn the ignition to the "OFF" position and remove the second key.
- Insert a blank (transponder) key, specially cut for your vehicle into the ignition and switch the ignition to the "ON" position within 7 seconds. The theft-alarm indicator will come on for about 3 seconds when the registration is completed. If an error occurs, the indicator will blink 3 times.
- If you want to register additional keys, repeat step 4 within 30 seconds after the theft-alarm indicator flashes in step 3.
Note: You are provided with 2 keys, but you may add up to 6 more keys.