555u transponder, key no work

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=8392
Printed Date: July 19, 2025 at 1:11 PM

Topic: 555u transponder, key no work

Posted By: profuse007
Subject: 555u transponder, key no work
Date Posted: January 20, 2003 at 8:53 PM

a buddy of mine have 2000 accord ex - viper 550 esp with 555u(old model, w/ two wire instead of 3 not white) his remote starter been out for along time. the key in the module got erase or something. it doesnt read in the ignition no more. i replace with a new one it remote start. the key doesnt work in the ignition either.

what is the cause of this. if this happen once, would it happen again to my new key.

Replies:

Posted By: profuse007
Date Posted: January 20, 2003 at 9:52 PM

i am afraid that after i replace the key which i have will erase the key code again. any reason why?

Posted By: RufNUSD
Date Posted: January 20, 2003 at 10:04 PM

honda owner. that is crazy. will advise. was it the valet key or one of the masters that got bumped?

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Someone pass me that bottle.

Posted By: profuse007
Date Posted: January 21, 2003 at 7:11 AM

that was the master key. it was installed by circuit city.

Posted By: profuse007
Date Posted: January 26, 2003 at 10:44 AM

i just replace with another master key and the coded key got fried again. this is a 555u this model have 2 wire instead of 3 like the other 555u i just installed. could it be the bypass mod that cause this whole mess.

Posted By: Velocity Motors
Date Posted: January 26, 2003 at 6:45 PM

Is the bypass module only on when the remote starter is engaged or is it active all the time ? Make sure that the module is only activated during remote start and deactivated at all other times otherwise you will fry the chip in the key.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

Posted By: profuse007
Date Posted: January 26, 2003 at 10:24 PM

thanks ill check it. this is one of my buddy's car

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