I have z2 that trun on every 3 to 4 seconds and I need to replace hd and I can not open screen is there a way to open it so I can replace hd

help how can i open  door with no power on it

Pull the headunit from car. Look at the bottom and you will see a semi circle cut out in the metal case with white plastic inside. Use something small that will fit in the white plastic holes and rotate the white plastic. Each turn will lower the screen a little more each time.

thank you got it opened put back old 30 gb but it still turn on for 2 s then turn off then on

ok I was putting it back in truck then it trun on then off did I push to hard on screen is it broken now or is somthing I can try