Thursday, May 31, 2012

How to Unlock Mustang Trunk without a Key or Remote

Ok, this could happen to you. My wife has a 2007 Mustang Convertible. She locked the keys in the trunk. Bad for me because I have a bad habit of losing things ....like the spare key.

I didn't want to call a lock smith, AAA, etc.

I thought perhaps I could remove the rear seats and reach in the trunk: NOT. The convertible top tray (if that's what it is called) will block access.

Basically after a few mistakes, the EASY way is to locate the trunk release relay under the hood. It is right in the fuse box, and very accessible. Pull the relay and short pins 87 and 30 with a paper clip. It is actually called the "Luggage Compartment Relay".

I took me about 1.5 hours with removing the seat, incorrectly looking up a 2010 MY wiring diagram, disassembling things that were unnecessary to figure this out.

Now that I have learned the hard way, you can do this in 5 minutes even if you have no mechanical or electrical ability. After you are done, go have a beer. Of course tell everyone you figured this out on your own.




21 comments:

  1. Does there have to be power to the car with jumper cables to the battery for this to release the trunk?

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    1. The battery must not be dead, otherwise you will have to hook up jumper cables. Basically the relay is providing power to a solenoid that unlocks the trunk. Normally this relay is controlled by the keyless remove. By shorting the two leads, you are just doing the relay's job to provide power to the solenoid in the trunk. Note that the wiring changes for different year Mustangs. There is a reasonable chance this will work on 2005-2010, but this as specifically for 2007.

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    2. This saved my life just now, I was about to try and find the trunk wire and put 12v down it from the battery using directechs info, this was soooo much easier!

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  2. Omg thank you from Texas just had to use this an hour ago!

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  3. Wow wow WOW!! Thank you so much. My son thought it would be funny to throw in the keys while I was closing the trunk after shopping... This totaltaly worked!

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  4. I tried this on my 2007 Mustang, with no luck.
    Removed the gray little fuse/ relay, and nothing happened.

    Did I miss a step???

    Sandy

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  5. Did you use the paperclip To short the two leads in the fuse box?

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  6. Just to be more clear, remove the "luggage Compartment Lid Relay". Bend a paper clip into a u shape. Place one end where pin 87 from the relay is inserted into the fuse box, and the other end where pin 30 is inserted into the fuse box. The relay basically completes this circuit which energizes the solenoid that opens the trunk. The paper clip is doing the job of the relay.

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    1. Thank you so much, I just did it on my 2005 Mustang Gt, I just cut one of my old phone chargers wire and used it to short pin 87 to 30 took literally 5 mins!!!!

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  7. Tom I just wanted to say how extremely awesome you are :) my husband was mad at me for locking my keys in trunk so I told him to go on and I would figure it out. Boom found your post. Now I'm awesome and saved myself 75$ on a lock smith. Can us women have a beer too lol

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  8. Many thanks Tom, your suggestion for short circuiting the trunk relay worked a charm, we'd locked our keys in the trunk of our 2009 Mustang and saw your instructions, it worked a treat. Great suggestion!

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  9. Worked perfectly! My mother in law owes you a beer!

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  10. OMG!!! Thank you. This is the 2nd time I have done this. Wish I would have had the info the 1st time.

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  11. omg your are the greatest mechanic alive. sell your ideas on craiglist!!! all jokes aside it actually works and i did it with a bobby pin

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  12. This works! Amazing! My friend just locked her keys in her 2008 mustang convertible's trunk and this actually worked!

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  13. Tom, save my trip to Napa... Thanks for taking the time to post and keep this alive. I've shared your secrete with all the members of my Mustang Club DVMA here in Concord CA. Thank you!

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  14. You don't have "remote trunk release control" in this version?
    On my 2000 mustang convertible, there is a yellow bottom located in the
    glove compartment. It worked for me :)

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  15. You saved the day!!! My hero!

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  16. I just found your post and tried it....you are a life saver! Thank you so much for being kid enough to share your knowledge with those of us who know nothing about cars. It was quite intimidating for me to even lift the hood of my '06 GT, but I manned up and did it. I found the fuse box, followed your diagram and instructions and viola! Thank you! Thank you! Thank you!

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  17. You saved me yesterday! I was about to call AAA then tried one more search. Your post was amazing. I'm so thankful to know this tip!! Love those that take the time to help others

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