Question about 2002 Jeep Grand Cherokee

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Cannot get ignition key to turn and start engine

Is the tumbler device bad or can I get it re-keyed?

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ALot of times, the security lock out goes bad in the locking cylinder and is usually covered by warranty even after the cars warranty goes out.

This issue was common with 98 hinda accords, the locking cyclinder would sudenly not recognize the key, kill the engine while driving, and not start. This was causing accidents and frustrated drivers who could no longer drive there car.

I would take it to a dealer and find out if its covered, also google it as it may be a known issue or recalled part.

You would know for sure if this is the issue as in most cars, the green or whatever color, Key light will flash when you put the key in, indicating it doesnt recognize the key.

Posted on Feb 10, 2009

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1 Answer

The key is stuck in the on position


sounds like the ignition tumbler. if it is in park and you can't turn key back its the tumbler will have to replace the ignition tumbler and you can get it re keyed to your old key so it should not be to bad

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My key wont go into ignition of my 2003 Cadillac deville. Are there any solutions to getting the key to go into ignition?


If you are unable to insert the key it might be because the tumbler has been turned past the point of key release it happens a lot with worn ignition tumblers try turning the ignition tumbler forward as if to attempt to start it without the key then try to insert the key if that doesn't work try turning it the opposite direction when you get it inserted you need to replace the tumbler asap if anyone who entends on stealing your car the knowledge that you have reported is enough to raise eyebrows of anyone who has bad ententions! I hope that solves your problem?

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Unfortunately, you will not be able to do that. The key and tumbler are an intricate part of the vehicles "anti-theft system. If the ignition switch or tumbler is broken it will have to be replaced and the theft code relearned. When the key is turned in the tumbler, the switch reads the key code and sends the code to the BCM. The BCM verifies the code is correct and sends a start message to the ECM and allows the engine to start. With out that code verification, the engine will not start.

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If the security light is hot or flashing when the key is in the on position, most likely the ignition key tumbler housing has failed.

You can try resetting the pass code by turning the ignition switch to the on position (do not crank or start the engine). Leave the key in the on position for 10 minutes. Turn the key to the off position, wait 5 seconds and turn the key to the on position again and leave it on for 10 more minutes. Cycle the key to the off position again for 5 seconds the back on for a final 10 minutes. Once the final 10 minutes is complete, turn to the off position again, wait 5 seconds and now turn the ignition on and to the start position. The pass code has now been reset and it should start. If the reset does not work you will have to change the ignition key tumbler housing that contains the key code resistor.
Good luck

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tap the end of the key whilst turning this should jog the tumblers and enable you to start engine then you have to replace the barrell and tumblers

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Tumblers are going bad. Get a locksmith or dealer to replace.

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2001 gmc yukon xl key in ignition won't turn to start at all.


The tumblers in the ignition lock may be seized, try cleaning it out first with a small spray of WD40 and try the spare ignition keys. The keys it self may be too worn down for the tumblers in the lock and if you have lots of other keys on your key chains, this will promote the lock to wear out quicker. Good luck and hope this helps and try turning the steering where back and forth as you try to turn the ignition key.

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bad tumbler..usually from to heavy of key ring...i know this sounds silly, but try wiggling the key maybe for a while and it will come out by chance..i have done it before..takes alot of patience but if you have time try it....hope this helps......it may take a while...

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Your ignition switch has piled up. Not the key and tumbler, the actual switch which is down at the bottom of your steering column. A rod that is connected to your key and tumbler pulls on the switch to start and stop your engine. You'll have to drop your steering column down to get at it, and replace the switch.

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