Or you could take one of the battery terminals loose and step on the brake pedal for a few seconds. Will work with any car that has functioning stop lights when the car is turned off (ie, all of them).
There IS a good reason to take the negative terminal off first - if your wrench shorts to ground, you won't have a dead short. Once the neg is loose, shorting the positive to ground won't hurt.
Putting a dead short (the jumper in the video) across charged capacitors is a bad idea. The rapid discharge can damage capacitors and other elements inside the ECM. Most are rugged enough to handle it but why take the chance? If you use the jumper-wire method, put a resistor in series.
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