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2003 Camry Transponder Bypass

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=46932
Printed Date: July 19, 2025 at 8:08 AM


Topic: 2003 Camry Transponder Bypass

Posted By: sector-zero
Subject: 2003 Camry Transponder Bypass
Date Posted: January 04, 2005 at 9:21 PM

I hade a profession installed a Compustar 2WFM-AS alarm remote start combo with a 556U transponder bypass, in my 2003 Camry. Everything seamed to work at the shop, but the next morning the remote start only cranked the engine, but wouldn't start. The problem only seams to happen in the morning. If I put a key in the ignition then the remote start works, so I believe it is the transponder bypass. Could it simply be that the receiver loop is just very sensitive and the transmitting loop needs to be in more intimate proximity? Has anyone else seen this problem? Should I suggest that they cut off the plastic sheathing and just get the factor loop and bypass loop closer together. Or am I completely off and it’s something else entirely? I had them add a relay on the cold start ignition wire in the hopes that that was the problem, but no dice. HELP!!




Replies:

Posted By: wblakes
Date Posted: January 04, 2005 at 9:35 PM
what i think the problem is in the ring of the 556u. it seems like toyota is very sensitive about that. i installed viper into a highlander not too long ago and the exact same thing happened. i moved the ring around the cylinder until it works and tape the wire so it would stay.



Posted By: sector-zero
Date Posted: January 05, 2005 at 7:11 AM

Thanks for the conformation of my suspicion; I’ll tell the installer.

 

This morning I sat in the car activated the remote start and held a key transponder up to the ignition in different positions and still it just cranked. Then I put the key in the ignition and it started then I removed the key and it still ran. Any chance the key sense wire is incorrectly polarized, needs a diode, or is not connected? The strange thing is it seams consistently time dependent. Is there anything in the Toyota security system that has some kind of time out?




Posted By: sector-zero
Date Posted: January 05, 2005 at 5:36 PM

Sorry for the cut and past with MS Word formating her is my message again.

Thanks for the conformation of my suspicion; I’ll tell the installer

This morning I sat in the car activated the remote start and held a key transponder up to the ignition in different positions and still it just cranked. Then I put the key in the ignition and it started then I removed the key and it still ran. Any chance the key sense wire is incorrectly polarized, needs a diode, or is not connected? The strange thing is it seams consistently time dependent. Is there anything in the Toyota security system that has some kind of time out? It works all say but not in the morning.


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