Trunk button doesn't work - 2003 Nissan Sentra

If it has the electric trunk release, the button could be in the glove box.
Otherwise you may have to remove the back seat to gain entry to the trunk.

Just go under hood, open fuse box and replace the red 10 amp fuse. Its blown. Go in the junction box under the hood, not the one in the cab. If the diagram isnt legible, simply check the little fuses until you find the blown one. Its in the same box as all the relays and the bigger fuses. Theres a few smaller fuses in the junction box that are just like the ones in the cab. Find the blown one, replace and enjoy.

I suggest you try one of those instant download manuals. My nephew bought one for me when my car broke and we could fix it all by ourselves with the manual costing $10. This website reliable-store.com is very good for this.
?Try it.

OPEN MANUALLY AND CHECK THE STRUTS PS. IF WHEN YOU OPEN IT AND IT GOES BACK DOWN THAT'S YOUR PROBLEM

There are 3 phases to fixing your car's trunk lid release problem.

Phase 1: First check the fuse - once you know that's OK, then proceed to phase 2 (below).
The fuse for the trunk lock is
the bcm (pwr) 15A fuse in the instrument panel fuse box (behind panel at drivers right foot)

Check that fuse, as it is the power supply for the button on the dash that sends power to the actuator in the trunk.

Phase 2: Get the trunk open (without taking it to the dealership).
If you have remote keyless entry to the trunk, you could try that - but with the actuator
dead/dying, it shouldn't work.

Here are a couple of ideas to try to enter trunk while (a) actuator isn't working, and (b) all
valet lockout features (designed to deny valets access to the trunk) are in the "Lock" position:

There is the lock cylinder, which you stated is not functioning - put the key in, and it doesn't
turn. Just to be sure, consider: lubricate key with Graphite lock-type lubricant, and retry.

The trunk has 2 valet safetys...the locking rear seats which require access to the trunk to unlock, and then there is a valet switch in the trunk that locks the button on the dash from working to keep valet parking attendants out of the trunk. That may be in the lock position.

You can try accessing the center area of the fold down rear seat and see if you can unhinge the rear seat from there. Maybe reach in with your hand, or an extension-type tool.

there may be a way to fold the hinge away from the seat back so it can be removed from the hinge and give you access to the safety latch in the trunk and open it that way (white handle in trunk).
The white-handled safety latch release is desiged to prevent accidentally trapping children, and
if you can pull it with your extending-type or grasping-type tool, the trunk will open whether or
not the actuator motor is working.

Phase 3: Replace the Problem part.

Your failed part may be either (1) Trunk Release Relay, or (2) Trunk Lock Release Switch

My Satrun ION manual doesn't cover either of these parts, and the online parts houses, e.g.
http://www.rockauto.com/catalog/x,carcode,1431624,pgname,Electrical-Switch%2B%2526%252338%253B%2BRelay,a,search.yahoo.com%2BSearch%2Bfor%2B2004%2BSATURN
fail to provide instructions. One of those times a mechanic has to t=rely on his/her native
handiness and/or experience.
To identify which of these parts is bad, locae the Trunk Release Relay (call your dealer parts
dept. for helpful tips on finding it), then operate the dashboard trunk release button with your
ear close tothe relay - if it makes a noise, the problem is the Trunk Lock Release Switch in
the trunk lid, otherwise its the relay.

Hi
check the fuse box for fused fuse and replace them with the corresponding fuses.
Regards.

Make sure the valet lock on the underside of the trunk is not switched.

Check to make sure the button on the trunk latch is turned from manual unlock...they made that feature so only the key will work to open the trunk that way if someone breaks in the front of your car they can't hit the trunk release and get into the trunk...may be the same thing for your remote. Hope that helps.

The trunk release rod is made of plastic and it is adjustable, it came apart. You have to fold down the back seat, remove the trunk lid liner and pull on on the plastic piece connected to the latch mechanism on the deck lid. It is a little difficult but is the only way to get in. You can buy the plastic piece from V.W. its cheap. When you install the new piece, use a screw driver to close the latch and try to open it with your key fob or button, this way you won't shut it and not be able to open it because it is not adjusted properly. there should be very little play (movement) between pod and latch if adjusted correctly. The rod connects to a vacuum pod for the key fob to operate the trunk remotely. good driving

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sounds like you have 2 probs if you turn ign on whilst holding valet button pressed it should cancel it if not the key is poss faulty