GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

"WHY!?!" (do you NEED your master key to program a new one?)

Thread Tools
 
Search this Thread
 
Old 11-24-11, 04:32 AM
  #76  
kahmed7780
Driver School Candidate
 
kahmed7780's Avatar
 
Join Date: Nov 2011
Location: NJ
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by slickgt1
Dude, where in NY are you. I can give you the number of my guy and you can just go there. He even gets keys cheap. He is in Brooklyn though.
I need his number. Would you please give me the name and phone Number. My email address is kahmed7780@hotmail.com. thx.
Old 11-24-11, 09:52 AM
  #77  
JeffTsai
Lexus Fanatic
iTrader: (1)
 
JeffTsai's Avatar
 
Join Date: Aug 2005
Location: DFW area TX
Posts: 5,392
Likes: 0
Received 43 Likes on 17 Posts
Default

Not sure if anyone posted this. I didn't read through the whole thread yet. Anyways, the key signal is sent direct to the ECU. There should be 2 data pins on the ecu harness dedicated to the immobilizer communications. It's not like on some of the GM that have a separate immobilizer module, where you can just jump the wire and the engine will start lol.

There are some locksmiths(more specialized ones) out there with a special programmer, or I guess you can call it a code eraser. Basically they have to take the ECU apart and they probe the immobilizer chip inside the ECU and erase the code. Then you put the ECU back in the car and start over with the factory re-learning procedure. So the car basically in a condition where it will accept any key that you put in as the master. Just call around and ask if any of the locksmiths in your area can offer this service. Most of the locksmiths don't know that this is possible, hell the dealers don't even think it's possible because they don't have the special equipment. Just look around and you will find one.
Old 11-24-11, 12:23 PM
  #78  
abounly
Lexus Champion
iTrader: (27)
 
abounly's Avatar
 
Join Date: Sep 2008
Location: ca
Posts: 4,325
Likes: 0
Received 8 Likes on 6 Posts
Default

The price is very costly to do a reflash for the master keys. The cheapest i've gotten to is $125 everywhere else charges 400+

Anyways I read somewhere on this forum that someone bought this OBD2 smart key maker programmer it and it worked.

Not sure but has anyone tried this thing?
http://www.ebay.com/itm/NEW-OBD2-Sma...ht_2275wt_1270

It plugs straight into the OBD2 slot
Old 11-24-11, 01:30 PM
  #79  
02Legend
Intermediate
iTrader: (3)
 
02Legend's Avatar
 
Join Date: May 2008
Location: MD
Posts: 416
Received 37 Likes on 34 Posts
Default

Interesting, tempted to get one as I have no master key for my car yet. I only got it with a valet.

After looking at that and looking up the types of keys. I found that I would need a programmer for a 4C key (I believe it depends on the year of car). I found a seller in NY instead of over seas.

http://www.ebay.com/itm/180673014590...#ht_500wt_1130

Last edited by 02Legend; 11-24-11 at 02:25 PM. Reason: Added Info
Old 12-16-11, 02:43 PM
  #80  
Nelsonga
Driver School Candidate
 
Nelsonga's Avatar
 
Join Date: Dec 2011
Location: NJ
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default Key replacement help

So, like many others on this thread I have lost my master key for my '03 is300 and only have the valet. Is my model able to make new master keys from the valet or do I have to have the ECM flashed and reprogrammed? The dealership is asking for crazy money and I'm trying to find a way around using them. Any info would be appreciated! Also I'm in the NY/NJ area.
Old 12-27-11, 08:45 PM
  #81  
WLGS01
Pole Position
 
WLGS01's Avatar
 
Join Date: Mar 2011
Location: CA
Posts: 209
Likes: 0
Received 0 Likes on 0 Posts
Default

^^Similar situation but I have the card key....

I'm gonna need a another master key since the one I have now was damaged. All i have left now is the valet key and the card key. Now with some research, I understand that the card key is a master and that there's a chip within the card. Can i just take this to a Lexus dealership and have them make me a new one. Or am I gonna have to get it re-programmed and be charged a grip. How does this work?

Thanks, for any info.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
BomBum
ES - 1st to 4th Gen (1990-2006)
4
06-13-21 05:31 PM
ApolloRoad
LS - 1st and 2nd Gen (1990-2000)
5
08-25-16 03:27 PM
dinero718
GS - 2nd Gen (1998-2005)
55
02-04-14 04:45 PM
rashanp102
GS - 2nd Gen (1998-2005)
7
10-09-12 11:41 AM
varcity64
GS - 2nd Gen (1998-2005)
1
12-30-03 05:35 AM



Quick Reply: "WHY!?!" (do you NEED your master key to program a new one?)



All times are GMT -7. The time now is 12:09 PM.