Sentry Key System

[RParks]

I have the SENTRY KEY system on my CTD. The head of the SENTRY KEY (very expensive) contains a small transponder that is interrogated upon turning the key in the ignition. The transponder in the SENTRY KEY then responds with the correct code and the vehicle computer allows the engine to start and continue running.



It is possible to start and run the engine by using a cheap normal key in the ignition and placing the SENTRY KEY in the interrogation field along the steering column during engine cranking. After the engine starts the SENTRY KEY is no longer needed.



I want to be able to use several cheap normal keys. There must be a good location to secure/tape the SENTRY KEY in the interrogation field under the dash.



I would appreciate someone who has researched and utilized this system advising me of a good specific location to secure the SENTRY KEY.

 

[jsimpson]

no

 

[sag2]

The rental car companies cut the head off a sentry key and glue it on the back side of the key bezel, then use $2. 00 keys for the customers to loose. Not very secure theft wise, but it accomplishes the same thing you are trying to do. The sentry key needs to be very close to the antenna that is a halo around the key switch. Have a regular key cut, and then hold the sentry key close and see how far you can be away before it will not start. I think after three start attempts (with no sentry signal), it locks you out for a while.

 

[surfbeetle]

Are the sentry keys waterproof?

When I go surfing, I always put my key to my '95 in a key holder in my wetsuit. I have seen too many people get ripped off 'cause they used a magentic hide a key or buried them in the sand. When I get my new truck, would the sentry get damaged from the water?

 

[jsimpson]

no; it's sealed.

 

[p-Bar]

That key doesn't cost that much to have cut at a lock shop. You need to bring in both keys though.



Don

 

[MarkRam04]

The sentry keys can be purchased on e-bay for less than $20. 00 ea. ,have them cut at the local hardware store and program them yourself.

 

[claymike]

How do you program them yourself? I this is the case and it is that easy seems like it would not take much to steal the truck.

 

[RParks]

Programming sentry key

The instructions for programming a Sentry Key blank are in the Owners Manual. You must have two operable Sentry Keys and the truck in order to program a blank Sentry Key.