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, ASE Certified Technician
Category: Mitsubishi
Satisfied Customers: 8594
Experience:  Mitsubishi employed and Factory trained ASE certified technician
Type Your Mitsubishi Question Here...
Doug is online now
A new question is answered every 9 seconds

How do I reset immobilizer?

Customer Question

How do I reset immobilizer for fob?
Submitted: 1 year ago.
Category: Mitsubishi
Expert:  Doug replied 1 year ago.


Is it the keyless entry you are trying to program or the immobilizer?

The keyless entry is the one that is programmed using the pins on the OBD port. The immobilizer can only be programmed either with two already working keys or using a dealer scan tool.

Customer: replied 1 year ago.
New fob from dealer, jump pin 1&4 car locks and unlocks, will not start how do I delete old code from ecu and insert new code from new key ? Or there abouts
Expert:  Doug replied 1 year ago.

Again the keyless entry (wireless locks) and the immobilizer (engine start) are two different functions. You can only program the immobilizer with two working keys or a dealer scan tool.... no exceptions unfortunately. The 1&4 procedure will only program the keyless function.

Do you have two functioning keys to use to add the new key?

Expert:  Doug replied 1 year ago.

We seem to keep missing each other somehow.

If you have two working keys you can add the new key by doing the following:

Insert working key #1 into ignition, turn to On, wait about one second, then remove key.

Within 3-4 seconds insert working key #2 into ignition, turn to On, wait about one second, then remove key.
Within 3-4 seconds insert new key to be added and wait 4-5 seconds.

Turn ignition key off then start vehicle, the key will be added.

Again if you do not have two working keys, a dealer scan tool is the only way to add the key; most dealers will perform this for whatever their minimum labor charge is (usually a half hour labor is the minimum). Some dealers will perform this free of charge when you purchase the key particularly if you have an existing history/relationship with them, but of course this is less likely after you've bought the key than done all at once.