Skip the auto shop - Our mechanics make house calls

Q: How do I replace my ignition switch with new ignition switch and key then program it to the car

asked by on

I lost my keys and the ignition is not working so I bought a new ignition for my mitsubishi diamante and now need help installing it and reprogramming the key.

We would need your model year to advise you regarding the specific service procedure as it can vary from year to year. The exact procedure is set forth in the Factory Service Manual (FSM) and you will need a copy of the manual or, and this is the recommended course, hire a professional to replace the switch. In particular, on all air bag equipped vehicles, the air bag at the top of the steering column must be deactivated to perform a repair like this because that air bag is in proximity to the switch. Were the air bag to accidentally deploy during the repair, one could be severely injured or killed. Consequently, the very first instruction in the FSM is "disable the air bag".


If you have merely lost the keys, the dealer can resolve that for you. Consequently, make sure that replacing the ignition switch is your only option. If you still want to replace the ignition switch, please request ignition switch fault/cylinder-key replacement and a certified Mechanic, dispatched by YourMechanic right to your location, will get the switch installed for, program the keys and make sure that you are good to go. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Was this answer helpful?

Hello. You will be able to install the new ignition and key but the Mitsubishi dealership or a capable Locksmith will have to reprogram the key to the car for you. I worked at a Mitsubishi dealership for a few years and the only way to reprogram the key to this car or to an ignition is with specialty equipment only available to dealerships and licensed locksmiths. You could reprogram the key yourself if you had two keys but being that you lost one and you’re trying to program a new key and ignition you have to leave it up to a dealership unfortunately. You did not specify which year you had and the Diamantes were made from 1990 through 2005, but here here is a website with some additional information on programming a key on a Mitsubishi Diamante. http://www.keyfobprogram.com/2002-mitsubishi-diamante-key-programming/ The installation process will vary throughout the years. Being that you did not specify which year I suggest searching for a PDF version of the service manual for your particular vehicle or purchasing a chiltons manual to help guide you through the ignition installation process.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  • Home
  • Questions
  • How do I replace my ignition switch with new ignition switch and key then program it to the car

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: I dont know whats happening my car doesn't move for a bit unless i press on the gas for a bit to make it to 2100rpm and it jumps

This is often a sign of low transmission fluid or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car's computer activates a transmission...

Q: Issue with ball joint on hub bearing

Hi. I'm guessing your rear alignment is out or the wheel/tire assembly has a lot of play. If you jack up the vehicle and have an assistant move the tire back and forth and up and down, you should be...

Q: When start up my car the tailpipe has a little bit of grey smoke in my 2012 Mitsubishi Lancer

Hi there. This can be normal depending on if the vehicle is modified or depending on the kind of driving that you do. If the vehicle has any sort of modifications to the engine then this will occur due to...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...