i've been googling to get the correct part # for tail light bulb for my 2014 gl550. i notice today that top part of tail light on both sides are out.
i think the whole tail light has to lit up at night even when you are not breaking or when are your turn signal is on.. i only see two strips of lights on both side and top triangle-ish part is dark. what's the part # for the bulb? thanks in advance.

 

That top part is a turn indicator light. It is not normally lit up.

 

my 2013 "top" portion of the tail lights are turn signals and are LEDs (why those and parking lights are standard LEDs and the brake lights are halogen is still a sore spot for me) ... turn signals are independent of the parking lights (ones you refer to that are always on at night)

 

agree on the brake light not being LED makes no sense. That’s why I upgraded mine to LED and they are far and away brighter than the stock brake light bulb.

 

It could be even more infuriating when you find out the x164 gl had led brake and turn signals from factory.

Why the taillights regressed is beyond me.

 

IKR .... the last of my halogen bulbs (rest have been LEDized ... lol) are the front turn signals ... Cannot figure out how to access those bulbs without removing the entire front light assembly ... ughhhhh ... anyone have thoughts suggestions?

 

Have you tried the little "door" on the front of the inner fender liner? Seems like it should provide access to the back of the headlight

 

say what???? little door??? hmmmmm

 

This one

 

oops. i guess i never followed my gl before. i was usually the driver. i followed my gl when my wife was driving in front of me at night and was wondering if those top tail lights were supposed lit up or not. thanks for the clarification!

 

Tell your wife to use her turn signals.
She’s not driving a BMW!