The Resident Evil 4 wrench in the Remake is needed to take the grill off the Overwrite Terminal for level 3 security card clearance. However, the RE4 Remake doesn't tell you where to find one, and with the Regeneradors around, it's not safe to go looking into every corner of the lab for a simple tool without a sense of direction. That's why we'll explain the location of the wrench in Resident Evil 4, so you can open the Overwrite Terminal and proceed to the next part of the game with a level 3 keycard.
Resident Evil 4 Remake wrench location
The wrench in Resident Evil 4 Remake is found inside the stomach of one of the Regeneradors in the incubation tanks just South of the locked Overwrite Terminal you need the wrench for.
To get the wrench, you need to kill the Regenerador. In the same room as the locked Overwrite Terminal is a Biosensor Scope, an attachment that can be put onto compatible Resident Evil 4 Remake weapons, like the Rifle, Stingray, or LE 5 (the latter of which is found just upstairs, if you use our guide to grab it).
With the Biosensor Scope, you'll be able to see X-Ray views of enemies. Scout the sleeping Regeneradors in the Incubation Lab, and you'll be able to see the Wrench inside one of them. Shoot it with your Biosensor Scoped weapon in any of the glowing parasites you can see inside it - these are weak points, but shooting it will also wake it up. Destroy all the parasites to kill the Regenerador, and you'll be able to take the wrench off its remains.
You can repeat this process on any Regenerador, and those that don't drop the wrench tend to drop rewards - usually gemstones that can be inlayed into treasures. Be careful though, they're deadly brutes in any situation, and missing the parasites doesn't do any damage to them.
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