Please help, The Jeep does not start and security light stays on. Tried everything like disconnecting the battery or checking contacts. Checked the starter and it works too. The question: how to disable/reboot the security system? Thank you guys in anticipation.

What does it do?

crank? - could be a battery or air-in-fuel

start for 10 sec or so? - key security

not even click? - check relay's, wires

somewhere in between is a switch on the steering column, and a 'clockspring' - I think they're intermittent.

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2005 CRD
stuff
Skeptic quod gratis asseritur, gratis negatur

Check the section in the owner's manual on the Sentry Key Immobilizer System; if it's the Security Alarm Indicator Light that is staying on then there is an electrical fault. If you have a Four Button Transmitter (aka remote entry key) I'd try changing the battery in that key and using it to lock/unlock and start the vehicle. If that doesn't work and the light stays on you need "higher" help than me.

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Sold to LOST member my 05 Ltd, GDE Stg II turbo + TCM tune, SunCoast TC w. Transgo kit, Steiger window regulators, Samcos, Fumoto valve, 2nd gen filter head with Lub. Spec. bleeder, Hayden clutch & 11 blade fan, inverted spare, P-1 battery, BF Goodrich Long Trail TAs, Etecno1 glow plugs, timing belt at 50K miles/8 yrs

Does the radio turn on with key turned? Is the light a solid on or blinking very fast making look like a solid light?

I say this because I had a Dodge Ram do this to me, Changed out the battery in the key fob and it wouldn't start, nothing would come on: no radio, no clicking, no nothing.

Thought it was the security system, but in the end the battery was drained. I have no idea how or why, but just check battery voltage to be sure.

FYI I spent about an hour trying to mess with the security system before I thought about checking the battery. And it could be related to our Libertys since it is a Chrysler product.

I found the problem - my ECU was fried... Good thing it was repaired for only $150. The problem with shudder while stopping stays.

OK your ECM was fried.

Was it jump started or something?

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Atlantic Blue 06 CRD Limited (his)
Joined by a 2000 XJ Classic (hers)