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

Keyless entry "Trunk"

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Old Jun 19, 2019 | 07:47 PM
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Default Keyless entry "Trunk"

I have an intermittent non-op of my trunk opener from pressing the key fob button. My normal lock and unlock of the doors works fine every time and I have a new battery in the fob. The latch from the drivers seat works fine. What module and where is it that receives the signal to open the trunk? I can't find any information on this. When it decides not to work, no amount of presses of the button will open it. And this is only when I have my hands full of course.
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Old Jun 19, 2019 | 08:04 PM
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You need to hold the button for about 2 seconds.
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Old Jun 19, 2019 | 08:21 PM
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Gee thanks.. It's a wonder I ever got it open all the other times . Now about when it doesn't work intermittently..
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Old Jun 20, 2019 | 05:27 AM
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Does any other programmed remotes exhibit this behavior...?
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Old Jun 20, 2019 | 06:30 AM
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Car only came with one key. Don't even have the master for it. I replaced the battery yesterday after figuring out my lock actuator ground because it was the same as it had always been before replacing the trunk. Intermittent non-op since I got the car. Now that it's back to working my mind is back on why the fob signal isn't working a lot of the time. The red light on the fob does light up when pressed when its in the non-op stage. Not like the key is falling apart or the butting not working or anything. I am able to lock and unlock the car from a greater distance now. But no change in the trunks intermittent behavior.
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Old Jun 21, 2019 | 01:19 PM
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I was going to say, validate that they key button is sending a signal, without or without the red light blinking. Our local auto parts store has a generic receiver, to tell you if your fob is transmitting anything.

The key that came with our GS4 was intermittent on lock for a while, then it stopped working, yet no light. Gave us the excuse to get a new Lexus key, and get the key and fob programmed.

If you're light is blinking, and you're transmitting, and the lock is intermittent... the the fun begins...
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Old Jun 21, 2019 | 05:50 PM
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I'll see about getting the signal tested at a parts store. Good idea
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Old Jul 1, 2019 | 01:13 PM
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The key you have is the master key if it has buttons on it if I were you I’d make a spare ASAP
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Old Jul 1, 2019 | 04:04 PM
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Originally Posted by lextout
The key you have is the master key if it has buttons on it if I were you I’d make a spare ASAP
Believe the key tip defines master, not the fob... and if the security light goes out instantly or after delay, after insertion. You can have a master without a fob, and a valet with a fob (too bad they never made a fab with just door function, with removed or disabled trunk button).

Also, believe the security chip is passive, while the fob is active. We have a master with bad lock button, that works just fine with the ignition. We keep it around as a spare, just-in-case.
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