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I wonder if anyone can help, I left my year 2000 LS400 with the Battery disconnected for a few weeks, and when I re connected it the Battery turned the engine over fine but no signs of life. On reading the handbook it told me of a proceedure which I followed, but still no success. Has anyone else had this sort of problem and how might it be rectified?

Alternatively is it feasable to bypass the imobiliser?, I am not too bothered about having it from a security point of view.

hopeing someone can help, john

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have heard of issues with keys before.

check the security light goes out when you put key in ignition (without turning it , transponder should activate)

if you are lucky enough to have another key/fob , try that.

the key has 3 functions. the blade (ignition and doors etc) , RF remote (remote unlocking) and the transponder - activated by a coil around the ignition barrel.


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