How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Doug Your Own Question
Doug
Doug, ASE Certified Technician
Category: Mitsubishi
Satisfied Customers: 8547
Experience:  Mitsubishi employed and Factory trained ASE certified technician
21364095
Type Your Mitsubishi Question Here...
Doug is online now
A new question is answered every 9 seconds

1999 Mitsubishi grandis fault with keyless ignition. switch

Customer Question

1999 Mitsubishi grandis fault with keyless ignition. switch will not turn to start car. car will start normally with the emergency key.
Submitted: 11 months ago.
Category: Mitsubishi
Expert:  Doug replied 11 months ago.

Hi,

Unfortunately there is not very much that is self serviceable on these keyless systems. The best you can hope for here is that the battery in the key has just started to fail. It is worth noting that when these begin to fail you may still have lock operation etc, just lose the keyless smart function alone.
Before doing anything I would try replacing the battery in the key to see if there is improvement to the situation; if you have a second key that is working, you can try swapping the batteries between them to see if the problem follows the battery.

Beyond that you will be down to a trip to the Mitsubishi store unfortunately; one of two things will happened most likely, either the key has failed entirely or the code got out of sync and needs to be resynchronized with the computer. While it is possible to have a WCM failure or antenna failure and so forth it is not likely nor common. More often than not the issue will be the key going out of sync, though the keys do fail of course. Moving forward the Mitsubishi store can attempt to reprogram (synchronize) the key first... if it takes, you will be on your way but should remain aware that it is possible if not likely the problem will return. If the key has not been exposed to heavy magnetism or mixed up with other wireless keys (sometimes causes issues), then the loss of sync is usually a precursor to failure. If the key will not program, then a brief inspection of the system would be in order before replacing the key.