That's the fuel cap. When I tightened up the fuel cap on my GSF, I used to get 1-click. But, now I cannot get that click anymore no matter how hard I try...

I also wonder why my Nissans can get as many clicks as I like but for GSF I only can get 1 click... (Again, no matter how hard I try)
(as cheap as Toyota's)
)

(One from my GSF and another one from the BMW and Model 3... Oops! Sorry!)























































































