Washing my car on Sunday, I sprayed the tailgate with hosepipe water and BINGO! - it opened. 
From now on I'm always carrying a 20L polycan of water + spray nozzle with me, so I can open the tailgate easily without pressing the button. Isn't tech wonderful?
From now on I'm always carrying a 20L polycan of water + spray nozzle with me, so I can open the tailgate easily without pressing the button. Isn't tech wonderful?