I’m having trouble programming a new key fob for my 2008 Mitsubishi Lancer. I’ve diligently followed the programming sequence multiple times, but without success. Here’s what I’ve done:
- Inserted the key into the ignition and turned it to the “Off” position.
- Within 10 seconds, I jumped pins 1 and 4 in the OBD-II port.
- Within another 10 seconds, I pressed the hazard button six times. The door locks cycled, indicating that the system entered programming mode.
- I then pressed the “Lock” button on the key fob three times. However, nothing happened. The door locks did not cycle again to confirm the programming, and the key fob remains unresponsive.
I initially suspected a battery issue and have tried several new batteries from different brands, including one taken from a known working key fob. Previously, while working at a used car dealership, I had access to a key fob programmer and was able to verify that the key fob itself is functioning correctly (though I don’t recall the exact frequency).
My research points to a common problem with the ignition key switch (the small white box on the side of the ignition cylinder) or potentially the two green wires connected to it. It seems these components are vulnerable to damage, especially with aftermarket turbo timer installations or during steering column plastic removal. A key symptom of a faulty ignition key switch is the door chime activating even when the key is not in the ignition. In my case, the door chime only sounds when the door is open and the key is in the ignition, which may indicate this is not the issue. I have also visually inspected the wiring and haven’t found any obvious problems.
Another potential culprit I considered is the ETACS (Electronic Time and Alarm Control System). From what I understand, if the ETACS was failing, I would likely experience more issues beyond just key fob programming.
At this point, I feel like I’ve explored most common troubleshooting steps. The two remaining possibilities seem to be a malfunctioning ETACS or perhaps simply needing to try a different key fob altogether. Any insights or further diagnostic steps would be greatly appreciated.
