2005 Saturn ion full pwer to accessories at ignition all dash lights work . security engine light on but when i turn the key to start fully and engage the starter i have nothing all dead.

SOURCE: key is stuck in ignition and car wont start

When the battery is dead, the key cannot be removed. You can either charge the battery, and remove the key or, there is a access panel (small) under the steering column, remove this, and push a small pluger to the left, while holding the plunger, remove the key.

Steve Allison

• 5569 Answers
• Posted on Feb 07, 2009

SOURCE: 2000 dodge intrepid won't start

If the key is returning to  the 'Run' position as it should, then either a relay controlling the solenoid or the solenoid itself is hanging up. The heavy contacts that send power to the starter can develop rough surfaces that can temporarily weld themselves together causing the starter to run on even though the engine is running and the key has returned to the proper position. There is also a spring that should normally help return the solenoid's contacts to their 'off' position that may be weakened. 

SOURCE: Ignition and/or starter problem.

Immobilizer armed its self

SOURCE: Aztek won't start,key locked in ignition, service engine light on

It is the security chips in the keys. Has this car been wrecked? Was this car made in Mexico? GM had the bright Idea of creating a security system that would do exactly this, I know on cars made in Mexico (like the HHR) You can reset the power and get the key back out, but vehicle will have to be reprogrammed with the master key. This involves turning the key from off to run position without ever going past run (i.e. start position) leave key in this position for 30 minutes. Turn key back to off for 30 seconds then back to run for 30 minutes. repeat this step three times. the last time, after 3rd 30 minute period, turn key off for 30 seconds and then try to crank. Please note this only works if the original master key is being used. You can then reprogram the second key following a similar sequence, only master key that is working has to be inserted to let alarm system know that vehicle is not being stolen only that you are trying to reprogram a key. If original master key is not being used then vehicle has to be taken to the GM dealership to program keys and possible key module replacement.

SOURCE: 99 buick lesabre, battery ok, turn key to start, nothing

The security system (VATS/PassKey) is faulty. You can find a great write-up here: http://newrockies.ca , it was the only thing that saved my Park Avenue.