Green Immobilizer Key Keeps Blinking.... - Honda-Tech
Go Back   Honda-Tech > Honda and Acura Model-Specific Technical Forums > Honda Accord (1990 - 2002)
Log In 
Search



Green Immobilizer Key Keeps Blinking....

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
Old 03-14-2010, 01:59 PM   #1
Honda-Tech Member
 
toicy4ya's Avatar
 
Join Date: Apr 2005
Location: bronx, ny
Posts: 29
iTrader Rating: (0)
Default Green Immobilizer Key Keeps Blinking....

Sup Everyone,

I have been having this problem intermitently for a few months now on my 2000 accord ex v6. The green immobilizer key on the dashboard keeps blinking which is preventing my car from starting. Initially i thought it was the alarm due to the reason that it has a remote start. However when i disabled the alarm the immobilizer light kept blinking. Then i thought it was the battery. I took the battery and had it tested at both RS Strauss and Pep Boys. Both confirmed the battery was no good. For a moment i thought this was the reason the immobilizer light kept blinking. I ran to sears and picked up a gold die hard battery and installed it. Still same problem! I tried three different keys just to make sure it wasnt a bad key but the light still keeps blinking. The car was starting up fine for a while then the problem occured two weeks ago after a bad snow storm in which the car sat for two weeks. After the snow storm i gave the car a boost and it turned on without a problem. Each morning for a week I would turn on the car in the morning just to make sure it started. Then this weekend we had a bad rain storm which lasted for three days and the problem re-occured. The light would not stop blinking. I feel this is the main reason my car does not start, My question now is what causes this light to blink, besides faulty keys or battery which we ruled out?

I thought maybe the main relay as i heard these cars suffer from that but would a bad main relay cause the immobilizer light to blink?

Has anyone ever had their immobilizer light keep blinking?
toicy4ya is offline   Reply With Quote
Old 03-14-2010, 02:34 PM   #2
Honda-Tech Member
 
redbull-1's Avatar
 
Join Date: Jul 2007
Posts: 1,766
iTrader Rating: (0)
Default Re: Green Immobilizer Key Keeps Blinking....

You might have to bite the bullet and bring in to have the dealer look at it. It could be the immobilizer receiver, ECM or something still related to the battery connections. I would check the battery connections first, even check the fuses under the hood and under the dash to rule everything else out first.

Here is a TSB to give you a little more info. regarding the immobilizer system:

http://www.tegger.com/hondafaq/tsb/accord/x97-058e.pdf
redbull-1 is offline   Reply With Quote
Old 03-15-2010, 03:50 AM   #3
Honda-Tech Member
 
toicy4ya's Avatar
 
Join Date: Apr 2005
Location: bronx, ny
Posts: 29
iTrader Rating: (0)
Default Re: Green Immobilizer Key Keeps Blinking....

I thoroughly checked the battery terminal connections yesterday along with the fuses under the hood and on the side of the dashboard. Thanks for the PDF i will download and review it.

Anyone else ever experience this problem?
toicy4ya is offline   Reply With Quote
Old 03-16-2010, 11:09 AM   #4
Honda-Tech Member
 
toicy4ya's Avatar
 
Join Date: Apr 2005
Location: bronx, ny
Posts: 29
iTrader Rating: (0)
Default Re: Green Immobilizer Key Keeps Blinking....

redbull-1,

Thanks for the PDF it offered some insightful information. However it didnt have any troubleshooting scenarios.

Is anyone experiencing the same problem?
toicy4ya is offline   Reply With Quote
Old 03-18-2010, 05:04 PM   #5
Honda-Tech Member
 
toicy4ya's Avatar
 
Join Date: Apr 2005
Location: bronx, ny
Posts: 29
iTrader Rating: (0)
Default Re: Green Immobilizer Key Keeps Blinking....

So i tried to tap on the main relay because i heard if the relay is bad sometimes this will allow the car to start. However when i turn the ignition the car is completely dead. The battery appears as if its completely drained. This is a brand new Die Hard Battery i purchased less than a week ago. When i turn the ignition switch the dashboard flickers then dies. Im at the end of my wits. Can someone offer some advice?
toicy4ya is offline   Reply With Quote
Old 03-18-2010, 06:38 PM   #6
Honda-Tech Member
 
redbull-1's Avatar
 
Join Date: Jul 2007
Posts: 1,766
iTrader Rating: (0)
Default Re: Green Immobilizer Key Keeps Blinking....

Have the alternator/charging system tested. It may not be recharging your battery or you may have a parasitic drain somewhere that is draining your battery.

On a side note, Sears Die Hard batteries are mainly hype. Sears doesn't make their own batteries. Many times people are overpaying for what they perceive from advertisement to be a superior battery. There are like only three main battery manufacturers. Johnson Controls is one of the better manufacturers. Researching who supplies the battery to the store, etc. is the key.
redbull-1 is offline   Reply With Quote
Old 02-28-2011, 01:40 PM   #7
Honda-Tech Member
 
toicy4ya's Avatar
 
Join Date: Apr 2005
Location: bronx, ny
Posts: 29
iTrader Rating: (0)
Default Re: Green Immobilizer Key Keeps Blinking....

Sup guys,

Im still having the same problem. I recently found out that my car has a parasitic draw. I guess my question is, could a parasitic Drain cause the Green Immobilizer Key to Keep Blinking if the car sits for a couple of days?
toicy4ya is offline   Reply With Quote
Old 11-06-2012, 03:15 AM   #8
Trial User
 
Join Date: Nov 2012
Posts: 3
iTrader Rating: (0)
Default Re: Green Immobilizer Key Keeps Blinking....

My honda accord has problem for starting engine. Green key blinking. I need an advice. thanks
Tin Aung is offline   Reply With Quote
Old 11-06-2012, 03:18 AM   #9
Trial User
 
Join Date: Nov 2012
Posts: 3
iTrader Rating: (0)
Default Re: Green Immobilizer Key Keeps Blinking....

continue from my first message, My key some kind of card form, and I was disconnect my battery for near two months for waiting some spare parts. It is the reason the immobilizer doesn't recognize my key card or due to ECU error?????
Tin Aung is offline   Reply With Quote
Old 11-06-2012, 03:21 AM   #10
Trial User
 
Join Date: Nov 2012
Posts: 3
iTrader Rating: (0)
Default Re: Green Immobilizer Key Keeps Blinking....

Full story was, my car was driven flooded area and engine stop. Engine has to repair, parts delay. After engine re-installed and engine cannot start due to the green key was shown. Need urgent advice.
Tin Aung is offline   Reply With Quote
Old 11-06-2012, 09:34 AM   #11
Honda-Tech Member
 
jdowen2's Avatar
 
Join Date: Dec 2002
Location: Mesa, Az, usa
Posts: 707
iTrader Rating: (0)
Default Re: Green Immobilizer Key Keeps Blinking....

Immobilizer indicator is controlled thru immobilizer receiver, PCM, or driver's side multiplex control unit. Either could be bad or you have a lead shorted to ground. Whatever is causing the green light to flash is the reason your battery is draining.
__________________
2008 BMW X3
1988 Corvette coupe
1967 Ford Mustang GT clone

Last edited by jdowen2; 11-06-2012 at 09:39 AM. Reason: added clarification
jdowen2 is offline   Reply With Quote
Old 01-28-2016, 12:46 PM   #12
Trial User
 
Join Date: Dec 2015
Posts: 1
iTrader Rating: (0)
Default Re: Green Immobilizer Key Keeps Blinking....

It looks like you located in US, so even replacing the key reader (immobilizer unit at key ignition) is just USD$50

I posted a YouTube on how to troubleshoot and replace it for Integra, but it is located at identical location for all Honda and Acura


For my car, if the key reader is faulty, you will experience ALL of following:
1. green key flashing
2. key programmer is unable to communicate with the ECU's immobilizer module. Ask auto locksmith to re-program your key. Most locksmith is free if they can't program it, so it will be cost free to try
3. crank-no-start
4. brake-by-pass code is able to start the car

The fault at key reader will cause the ECU (also called PCM) to shutdown the immobilizer module inside the ECU, which looks like a anti-thief prevention.

In the key reader, there is a small circuit, which could be damaged due to flood

Quickest:
1. Get the brake-by-pass code from dealer. If you can start the car, then the faulty is the ignition key reader at key ignition, which Honda called it "Immobilizer Unit"
2. Borrow the key reader from other cars. Temporary disconnect yours and installed the loan unit. If car starts, then confirmed "Immobilizer Unit" fault
feels is offline   Reply With Quote
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Immobilizer failure--Need Override code Ctarpley Honda Civic (2001 - 2005) 2 12-10-2015 04:43 PM
2001 Accord No Start-- No Crank securityinfo Honda Accord (1990 - 2002) 6 07-28-2014 07:26 PM
2003 Element Immobilizer light flashing and wont start Maggie9123 Honda Element & CR-V 4 03-18-2014 06:07 PM
green blinking issue, car wont start, will start intermittently marcpilot1 Honda Accord & Crosstour (2003 - Current) 3 02-14-2014 05:41 PM
Accord Immobilizer problem zmofny Honda Accord (1990 - 2002) 31 02-02-2014 11:39 AM


Tags
battery, blinking, car, civic, flashes, flashing, honda, immobilizer, imobilizer, key, light, main, pilot, rain, relay, rsx, times, troubleshooting

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 10:40 AM.
 


Honda and the Honda marquee are registered trademarks of the American Honda Motor Company, Inc. Neither American Honda Motor Company nor its subsidiaries or affiliates shall bear any responsibility for Honda-Tech.com content, comments, or advertising. Honda-Tech.com is not affiliated with American Honda Motor Company in any way. American Honda Motor Company does not sponsor, support, or endorse Honda-Tech.com in any way. Copyright/trademark/sales mark infringements are not intended or implied.