Denis Osullivan

Odd problem.
On a cold morning in the 40’s and having not started the car, when operating the rear trunk it will not lock. It will move and attempt to lock but it just tries and pops back up.
But once I start the car- after 30 seconds running, the trunk will operate as normal and the latch locks.
Any insight to this issue? Thanks

Jac0bkaan

unfortunately it’s happend to me last morning at 5 am 26 times tryed to close but it’s opening back last one closed and locked car ! I brought to service and they didn’t find anything and they sad everything ok???

NbyNW

Had the same problem last year. It’s a cold weather problem. Mine acted up on a trip at 5am also, at 7 degrees F. Very aggravating standing there in the cold ready to go.

When it’s open push the emergency open button a couple times, think it’s green and on/in the trunk lid. You’ll hear the latch cycle. Then close it. Might have to do it a couple times. Mine closed and locked. I found this fix on utube.

cfmistry

I also have the same issue. For me what works best is to use the door switch to remotely close the trunk. Doesn’t work 100% of the time, but better than the trunk closing button.

Mitch Alsup

Mine does the same:: the cure is to use the green button several times.

George A.

Mine does the same thing. I am in Southern California, so it is never cold here. It always happens at a local, small shopping center. Sometimes, the Emergency Trunk Button solves the problem, but not always. I always get it to close, however, once I leave that shopping center. Every time. They must have some kind of radio transmissions which activate the unlock system. Very Weird!

Tom in Austin

Speaking of trunk opening and closing ... can the mechanism stand the trunk being opened and closed by hand? If I put a large item in the trunk and the lid won't close all the way, can I lower it by hand and then use a bungee cord or something to hold it place while I'm driving?

Seems like it's really only meant to be all the way open or all the way closed and operated only by the motor.

NbyNW

Sure, bungee away for whatever is inside or if it won’t lock. Drove across Iowa like this until I figured out the green button fix. Not a high point for the car and no longer have it - moved to an E wagon. Miss the S for highway cruising.

acpmc

This happened to me a couple of weeks back in out W222, took it to the dealer and they said it was a software issue, they reset ans now its working perfectly.

konigstiger

Reference attachments accordingly.

acpmc

Awesome

Denis Osullivan

I dropped the car off for service at the dealer and showed the Service Campaign listed above for my 2018.
SA said it doesn’t apply to my VIN. Let’s see what their plan of action is.

Denis Osullivan

Latch was replaced under CPO warranty

zitsky

About to ask a dumb question. Do you mean the trunk switch in the driver’s door will both open and close the trunk? I started having this problem a few days ago. I closed it manually. It’s going to the dealer for windshield replacement so I’ll let them look at it.

NbyNW

Yes, that switch will open and close the trunk. When mine acted up using that switch didn’t help. The trunk latch was the goofy part of the system. Pushing the green button and cycling the latch a couple times got it closed.

How did you close it manually? When I tried an old school close/slam the trunk it just popped back open.

Sactownmb

zitsky, the switch in the driver’s door will open and close your truck lid. Pretty handy at certain times.

as.thompson

My door switch will open and close the trunk lid but it will not close it sufficiently to latch. Perhaps my latch or switch is out of adjustment but I never use that feature anyway so really don't bother with it.

zitsky

Just like you said. Push down on the trunk lid. Then I hear the latch close. Don’t slam it.

Have we all found the hidden rear spoiler feature?