Question about 2000 Saturn SL
The security light means that the anti theft system is malfunctioning. There is a communication between your key, ignition, and TDM. (theft deterrent module). When this communication is broken, the security light comes on and will eventually shut down your starter or injectors. The whole purpose being that, if the key's signal does not match the signal needed in the TDM, it must be getting stolen and shuts the car down. Read up on this problem thru this link. Alot of info and some possible "do it yourself" solutions. For the record, this problem is quite common, and expensive. Check out these options before running to the dealer or mechanic. http://vatspasslockpasskeysecurityhelp.yolasite.com/
Posted on May 20, 2011
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Posted on Jan 02, 2017
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