False trunk open warning lights - G35Driver - Infiniti G35 & G37 Forum Discussion

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False trunk open warning lights

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Old 10-23-2012, 10:02 AM
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False trunk open warning lights

I have a 2008 G35x that occasionally lights up the trunk open warning light when the trunk is securely closed. If I open and close the trunk the light goes out. But the three times it has happened, the trunk has been securely closed.

I am guessing the sensor/switch might be loose or need replacement; that would be easier to fix than a wire issue. Has anyone had this issue before? Can anyone tell me how to get access tot he trunk closed sensor?
 
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Old 10-23-2012, 01:50 PM
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Hello, and welcome to G35Driver. I have not worked on the trunk circuit so I can't say where things are located, nor have I ever heard of anyone with your symptoms here. I wanted to let you know that while I understand your diagnosis, and I hope it is as simple as you describe, the problem has the potential, at least, to be a bit more involved. Looking in the shop manual, there are some 6 pages or so of description involving the trunk lock functionality
The system is entirely controlled by an intermediary logic module (the BCM) which reads inputs from numerous sources and then determines whether or not to trigger the opening of the latch, or the buzzer or dash light for the trunk open condition. The system involves the door locking system, the keyless entry system, etc. .

Nothing happens directly. Just to give you an idea; if you push the trunk open button, it does not just simply close a switch that provides a circuit path for the latch mechanism to operate. Instead, the pressing of the button is constantly being monitored over a communication bus by the BCM which, upon seeing the button "request", determines whether or not to operate the latch. With this level of logic involvement, when troubleshooting a system, you always need to consider that the indicated symptom could be phantom or actual

Back to your question though, I'm not sure if the sensor for the trunk open condition is a discrete component, or if it is integral to the latch actuator mechanism, or light switch, or what, so I really can't say where it is. If you do solve this, please respond back here with the answer in case someone else ever lands here from a search.
 
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Old 10-23-2012, 05:25 PM
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This has happened to me twice. Both times were after a heavy rain. I didn't know where to look to see what got wet but it hasn't happened since.
 
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Old 10-23-2012, 05:52 PM
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Originally Posted by dukehotty View Post
This has happened to me twice. Both times were after a heavy rain. I didn't know where to look to see what got wet but it hasn't happened since.
Considering your sig line, it would help the OP if you clarify if this was this on a 1st or 2nd gen model, and was it on a sedan or coupe?
 
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Old 03-09-2019, 09:39 PM
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Did you ever figure out what the problem was I am having the same issue?
 
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Old 03-11-2019, 01:34 PM
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I haven't had this problem yet, but I have had a few instance where the trunk just didn't want to latch and stay latched. Sometimes all I had to do was pull the inside release handle, other times i had to hit the internal release button/switch. Haven't yet figured out the cause, but next chance I get (after the weather starts warming up) I plan to dig into the latch mechanism and release button and see it something has gotten in there and caused this.
 
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