KCClass2016

I own a 2016 GLC 300 and locked two keys inside the car. I will spare the details of how this happened. My question (and frustration) is how this is possible? I would think the technology for a MB would be better and not allow this to happen. Can anyone explain this?

decorily

Well it should be difficult to lock the keys in the car but I'm guessing the rear hatch was involved!
Why not share the details as only you know instead of asking us!

Shouldn't be a problem anyway as car can be remotely unlocked.
I personally keep my spare key in the car so in the event of losing key when away from home I won't be stuck.

Sigp232

☝️Doesn't make sense but your Mercedes Me App will unlock your doors.

SteveE400

Had the same thing happen on our 2015 GLK. Can't reproduce the problem, dealer finds no faults.

Had to use another car to drive home to get the spare key.

Really?

Citizen613

Not helpful, if you do not share the sequence of events.!!
The manual states these warnings:
- if the key-fob is located in the boot (trunk ) section of the vehicle, it may not be detected
- if the key-fob is co-located with other metal objects it may not be detected.
- if the key-fob battery is depleted, it will not be detected
- if the key-fob is de-activated (double-press the lock button), it will not be detected.

Which one applies in your situation??

peet

I did this two weeks ago. Had my keys in my backpack, threw it in the trunk hit the lock/close combo button... nothing. hit it over and over still nothing. Hit close hatch button and it closed.

Punchline is the car was locked when I opened the hatch so it resumed the lock state afterwards. Ugh.

Thankfully the Mercedes App let me back in - and thankfully I had it setup and on my phone and my phone was in my pocket not my bag.

At the end of the day, some things have to allow locking a key inside. Someone must have a need to do that when giving a manual key or spare to another person. I don't know. But watching many car auctions I see that the cars have the keys inside and some are locked. (SHRUG)

openwheelracing

I believe you can still call MB to unlock car too. I was able to do that years ago with BMW

ceasar m

HI All,
In relation to those discussions ,is the GLC lock all doors if we walk away with keyfob in hand ,or can we program the car do it that way? I tried It did not lock . My son's Audi once you walk away ,car locked itself as you can hear locking.
Cheers

KCClass2016

Thanks for your reply. Both of the key fobs were in the cabin. Neither one was close to metal. One key fob battery was just replaced and I do not know the status of the battery strength for the second key fob.

The sequence of events was as follows: I put some items in the trunk, closed it using the close button (not the lock button), then I opened the driver side passenger door, put some items on the backseat and closed the door. The entire car locked up with two key Fobs in the cabin.

Citizen613

Thanks for the update.

Hmmm ..doesn't make sense. As I understand it ..or there is something missing in the facts of the scenario. Or unless there has been some change in the computer logic or some differences with North American models as opposed to Australian models. Though I have quoted details above from the US PDF version of the operating manual.

The only time that I have noted that my vehicle will 'self lock' is when I have either pressed the key-fob unlock button or touched the door handle unlock sensor BUT have not opened a door. The vehicle will wait a number of mins ...maybe 2 or 3 , and then return to the locked condition. If I DO open a door, this sequence is negated.

In your situation, the vehicle was not in a locked condition before your placed items in the luggage area, therefore the only condition that will cause a lock is a direct command from the door handle sensors or a button press from the key-fob or if ME app is operating, then from the ME app on your phone (this function is not available in Australia)

Sure you did not inadvertently brush against a door handle sensor ??? …. but this would only command a 'lock' if both key-fobs were not detected ….so not possible as stated unless key-fobs were inactive..

After you recovered the vehicle does both key-fobs work as per design ???


Answer to earlier post re: Does the GLC lock after moving away from the vehicle with the kye-fob >>>>>> No ..you must actively lock the vehicle, door sensor or key-fob.

Have you been able to replicate this scenario (with one key-fob ...have the 2nd deactivated and in your hand) ???? if replicable ……..off to Service Dept we go !!!

Mary Wylie

they wont be able to unlock if in garage it blocks the signal just happened to me

mikapen

Sometimes it takes a long time for the app to find the car - more if it's in a steel building. It took about 5 minutes for mine to lock once in a metal building.
Did it finally "see" the car and open?

enduro963

Happened to me a few months ago on my 2020 GLC. Key fob and cell phone inside and when closing door I touched the sensor 👋🏻. Was surprised and mad that locking was possible with key inside! Lucky for me I was home. MB fix this!

ParjAS

It doesn't do that for me... I guess a few have bugs or something?

Isawelvis

I remember about 6 years ago, I bought a new XC-90 , after just getting it to the house. when I got out I manually locked the door with both keys in the car. I called the dealer and he told me to call the Volvo service number. A guy came out and used the balloon device to spread the metal window frame open and then opened the door. What a Dip Sh_ _ , I felt like.

ParjAS

They should get a system that ensures locking in is not possible...

GateKeeper

its already available, keep key in pocket.....

being the car has push button start, no need to even take key out of pocket, I can unlock the car, start the car, lock the car, and key is always in my pocket

Hasn’t failed me yet.

.

JemmaG

I had this yesterday. Put the dog on the back seat, handbag with keys in on the floor. Closed the back door went to open the front door and nothing the whole car was locked.
Phone in car so couldn’t use Mercedes Me to unlock. Called MB from another phone to see if they could remotely unlock- nope although they did say “oh that should never of happened!”
waited 45 mins for the spare key to be delivered.

And guess what can’t bloody recreate the scenario so clearly a glitch as the week before I forgot the keys were in the car and it wouldn’t let me lock it 🤦‍♀️

sort it out MB

Melatsource

This has happened three times to my GLC 220. Twice with my daughter inside and once last week whilst removing a table from the boot, my keys were placed in the boot while i removed the item, suddenly the boot automatically closed itself with the keys, my phone and handbag all inside and locked me out.
I'm currntly at mercedes having it looked at as its become a real saftey issue.
both key fobs have new battery's. not placed with other metal objects (except other keys on the fob, and surely this cant effect it)
When I used another phone to call the Mercedes 24 hour urgent care line they also said 'oh this shouldn't happen' but were unable to help unlock the car. Managed to get a lift home and back with my spare key.

dalazernet

If the vehicle is locked and the boot is open, you can close the boot and the car won't look for the keys in the car since you are not actually "locking" the car. Also, "boot suddenly closed by itself" could have been the sensor underneath detecting your foot underneath. I've discovered that my dog likes to run underneath and have the boot lid close on my head at random times. He looks like he laughs and is enjoying causing that :-/....

This scenario is akin to popping the trunk of a car (any brand) while the car is locked, throwing your fob in the trunk and closing the lid - it'll let you do it I'm sure.

- Eric

glutz

Bought a 2018 E400, only came with one fob, months later started my car with phone and key inside to warm up and locked. Had to call MercedesMe and took numerous attempts but finally worked. Happened again, my husband put app on his phone but since we live in a rural area with touch and go signals, again, tool numerous attempts. Mercedes wants close to 1k for extra fob. You can purchase used fobs but again, no one can program but Mercedes. So now looking at buying a blank valet or the emergency key that's inside the fob to see if any one can cut. Having one hell of a time. Love my car but absolutely hate the MercedesMe app, the customer service and the monopoly on parts, programming, etc.

glutz

Never once did my use my truck area when this happens over and over and when I only have the one fob that came with my car, it is especially frustrating. Along with MercedesMe not always working as we are in a more romote/rural setting (another frustrating issue). I finally did a ton of research. Found that key4.com made blank, mechanical/valet keys for MB, spoke with my small town key/locksmith and thot what do I have to lose as the blanks were maybe $2. Got the keys, he cut and was so damn pleased they worked!! Didn't have to spend $90 plus bucks on one mechanical key from MB and have a background check. Hope this helps others as it has tremendously helped me.