Introduction To Roth Automotive Science Forums Car Repair Car ignition key wont turn

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  • #285
    theory816
    Participant

    I have an 07 RX400h and sometimes the key wont turn. What is the cause of this?

    #286
    admin
    Keymaster

    If you physically can not turn the key in the ignition it is likely due to the steering column interlock. This is a feature designed to prevent vehicle theft by preventing a thief from being able to steer the car even if the ignition is “hot-wired”. This can happen from either a worn or improperly made key (like a duplicate key). More common is that you can get around this by simply moving the steering wheel back a forth a little bit while trying to turn the key. If this works, the problem is just the friction in the steering column interlock due to a little bit of load on the steering wheel. It should not take much pressure on the steering wheel to allow you to turn the key.

    #289
    theory816
    Participant

    I found some video of the steering lock problem but this wasn’t the fix for my particular problem.
    I fixed it by lubricating the lock with liquid graphite. Now my keys turn every single time without missing a heartbeat.

    Mr Roth, is there a way I can reach you by email? I’d love to discuss with you a project that I’m working on and is in dire need of your help.

    #290
    admin
    Keymaster
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