Intermittant Sentry Immobilizer
Has anyone come across this..... 1999 WJ, 4.0, 120000 mi, bought it new.
For the last couple of weeks while driving I would catch a glimpse of the Sentry warning in the instrument panel (circle with the key.) It has been starting/running fine since new. The light would come and go with no regular pattern and it did it with 3 different drivers, 2 OEM keys and 1 ebay spare. I didn't pay too much attention to it!
4-5 days ago... the Sentry Key Immobilizer System kills engine after about 2-3 secs. The key light on the instrument panel is illuminated. I just happen to have my spare set of keys with me. I try the other key and it starts up and runs fine. The light is off... Hmmm, ok, bad key??
last night, the SKIS kills the engine again. I lock the doors and go in the house to get my cell phone. I come back out, unlock doors and try to start it again. On the 3rd try it starts/runs fine. Now i'm thinking it has something to do with the locks/alarm??
Today, after about 5 shopping stops, it leaves me stranded at PETCO. No combination of anything will make it run. Of coarse I don't have tools! I give up and call for a tow truck to get it home. A long story and a $75 tow later it starts/runs fine again!
So my questions..... How often do the SKIS Modules fail? Is it unusual? How can I check for a failed module? Maybe, it is a short in the harness, does anyone have experience with a bad harness in the steering column??
Also, I remember reading something about trying/failing too many times in a row. If it locks me out, is there any way to reset the ECM? I thought I read about killing power and grounding the ECM, but I can't find it again.
Please help me troubleshoot this problem. Any and all suggestions welcome. Sorry for the long post. Thanks, Jb
Last edited by Johnny B; 10-25-2009 at 12:08 PM..
Reason: spelling, can't edit title!