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Old 09-14-2016, 04:53 AM
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Angry Sentry Key Immobiliser Light

Having a problem with Jeep and wondered if anybody had same:

6AM Monday when i went to start my 2003 Grand Cherokee 4.7 the Sentry Key Immobiliser System Indicator light came on and car would not start. AA came and tried a few things but no luck. My spare key was at office and we agreed best to try that before towing to garage as that would tell whether key or car unit was the issue. Spare key tried yesterday and initially same issue. However after leaving key in car with ignition on for an hour the car seemed to recognise the key again and the car started!
Today the spare key initially gets the Sentry Key light and Malfunction light and the main key managed to start it. But not consistent and warning lights still on. Tried then with spare key works and all seems fine with no warning lights?!
AA cleared all fault codes (OD26; 0210,0311,0811) most refer to communication with engine control. Today my local garage plugged in and only found P1687 - No Mech Instrument cluster BUS Message received.

Currently back to not working then working and as I have also had "Check Gauges" fault intermittently coming on lately I fear an electrical fault that will recur and leave me stranded somewhere

Any ideas?

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Old 09-14-2016, 08:30 AM
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Re: Sentry Key Immobiliser Light

Hello, no real ideas i'm afraid but I did read somewhere, maybe the Haynes manual, there is a procedure for programming a 'blank' key by inserting it into the ignition switch if you need extra keys, not helping much I know but I have little experience of this sort of thing only having owned my Jeep for a few Months, try posting in the appropriate section of the forum, you're bound to get a useful response, they are a great knowledgeable bunch on here! It'll be interesting to see how you get on, best of luck!

2000 WJ Grand Cherokee Limited 4.0 petrol, only 68,150 Miles and counting!.....Got some catching up to do!
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