Gas-Filled Strut, Disengaging

Procedure 

-- Support the lid or secure it against falling.

-- Using a small screwdriver, lift the locking spring -1- slightly and remove the gas-filled strut -2- from the upper ball pin.

Fig 1: Lifting Locking Spring Using Small Screwdriver

Courtesy of AUDI OF AMERICA, LLC

-- Repeat the procedure on the lower ball pin.