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Mercedes c 230 keysense? Remote Start

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=67717
Printed Date: July 02, 2025 at 8:46 PM


Topic: Mercedes c 230 keysense? Remote Start

Posted By: bmw325ist
Subject: Mercedes c 230 keysense? Remote Start
Date Posted: December 05, 2005 at 3:46 PM

When recently installing a remote start (562T) for a 1997 Mercedes C 230, the car would not start without a key being in the ignition. An immobilizer bypass (556U) was then experimented with but with no avail due to the large size of the key housing. The remote start does work even when the key is in the off position, and can easily be removed once the car is started. This seems to be a starter-kill circuit maybe involving a transponder/keysense. How can the keysense be bypassed, if possible. Technical experts at two major alarm companies could not be of assistance in the troubleshooting.  It would be a great loss of money if the car cannot be started. Any help would be greatly appriciated.

Thanks

-Mike




Replies:

Posted By: bmw325ist
Date Posted: December 07, 2005 at 9:44 AM

Anyone there? bump.




Posted By: gus1
Date Posted: December 07, 2005 at 11:18 AM
The next thing to try would be to hold the key head up to the ignition cylnder to see if it is really a keysense thing, or a transponder based thing. If it starts with the key placed in front of the ignition switch, then you need to figure out a way to do a transponder in there. If still no go, then you need to find a wire that changes state when the key is inserted into the ignition chamber. That is your keysense.

Gus


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Wherever I go, that is where I end up......


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