[BOBCDP]

Not sure why you needed to buy a scanning tool to release the EPB. You can do it by following this info which I just copied from another previous post in the forum:

Releasing the Electronic Parking Brake EPB:
The EPB applies automatically when the ignition is turned Off (Earlier models are manual). To temporarily disable the parking brake:
- With the ignition On-engine Off, depress the brake pedal and press down and hold the electronic EPB switch.
- Within 5 seconds, turn the ignition Off.
- Continue to hold down the EPB switch for 2 more seconds.

The parking brake will remain released until the next time the ignition is cycled On and Off.

Caution: If the ignition is cycled On and Off, this procedure must be repeated.
Caution: Ensure the vehicle is properly secured.

If you need more information just put EPB in the search box. There are lots of posts on the subject.