Dead battery LX470 1998 -- cannot open hood and cable attached and seems taut.

Heidi, No electric release. The latch is probably stuck. While you pull the interior hood release have an assistant push down and pull up repeatably/vigorously until hood releases from stuck position. Lube latch and cable before closing hood. Check the attached links,instruction and guides, Good luck
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Hi Manuel:
Is it possible to open the hood?
If so, you should be able to attach jumper cables (Alternator or Relay?) to get the switches powered up. I'm assuming the trunk latch is electrical.

try to reach up under the front of the car with your arm and try to locate the latch with the hood release cable attached to it. Use your fingers or plyers to manipulate the latch to release-pull on the cable. You may have to remove the grill to access it.

With a long pair of needle nose pliers, look where the hood lock is and try to grab the cable that normally opens hood. If you can get to pliers or another tool attached to where that cable connects pull it in the direction of the cable and this should unlock the hood. You might have to lay under the bumper to get at it, or you might be able to go through the front grill.

I would have expected that you could open the trunk on an '04 with the key, but
There should be a lug under the hood where you attach a positive jumper cable. It will likely be in a plastic box with a "+" symbol. You attach the negative jumper cable to any solid unpainted metal under the hood.
Use another car or the new battery to power the car via the jumper cables so you can open the trunk.

Usually you can energize the electrical system by making a mini set of jumper cables using a lamp cord and alligator clips. attach one end to a battery and attach the ground to the starter housing or any metal bracket, the positive lead to the main terminal on the starter. (don't mix up the lead ends...mark them so you can identify them.) Do not try to start the car with this attached. light wire won't handle the amperage.

If you can open the hood, you can jump start the car at the alternator. Put the positive jumper cable on the large + wire on the alternator, and attach the negative - to any bracket or to the engine block and this will start your car, or open the trunk.

This same thing happened to my Blazer. If you reach your hand up behind the front bumper and use a hammer you can hit the release latch and it will open.

find the cable that is supposed to attach to the latch, and grab it with a pair of pliers or the like and pull.

The cheapest way to get around this and get enough voltage into the system to open the hood is to purchase a cigarette lighter extension (about 3 feet) and cut off the female plug on the end. Strip the 2 wires back a few inches and attach one to the positive and the other to the negative on a set of jumper cables. Attach the other end of the negative jumper to a battery. With the keyless entry in hand, touch the positive cable to the positive terminal on the battery and press the unlock button until you hear the car doors click. Once it clicks, you should be able to use the hood latch to gain access to the battery.