The tendency of many BMW owners’ trunks to open on their own is a frequent and seemingly random problem. This strange issue can be really annoying. Fortunately, we know the frequent reasons why your BMW trunk opens on its own and how to fix it.
Your BMW trunk might be opening on its own as a result of pushing the key fob by accident while it’s in your pocket, a misaligned latch hook, defective electronics, or, in the improbable event that another BMW motorist nearby has the same coding on their key fob. Those who drive BMWs with automated trunk lid function frequently express this complaint.
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quackbury
It sounds like this only occurs at home, in your garage, and never at work, the mall, the grocery store, etc. Possible outcomes, however unlikely:
1. As you exit the vehicle, you unintentionally press or brush against the trunk release button located on the inside of the door.
2. Your next-door neighbor drives a BMW and has the exact same remote coding as you. The chances are probably one in a few million, but unless there are infinitely many codes, it’s still possible.
3. A gate, a garage door, etc., inside your garage cause RF interference that sets off the release.
4. Every night, the cleanest homeless people in the entire world sleep in your car. The next morning, they pack up and go.
5. Your car is a portal to another dimension or possessed by demons.
Have any of you ever noticed the trunk beginning to open and shut on its own?
I’ve been using my extra fob since it happened to one of mine a year ago, but today it started happening with this one as well.
Anyone with specific proof that this is the reason? What steps are involved in replacing batteries and where can you purchase them?
Back in the day, my mother’s 328 had a similar problem. was connected to the latch and the system as a whole lost its synchronization. As a result, while the latch was open, the car believed it to be closed, and vice versa. In addition to replacing a component, they nearly reset the computer’s operating system.
Okay, I changed the batteries in both and tried using my other key fob; it no longer has the issue.
Perhaps the car is trying to warn you that the other key hasn’t been used and that it’s about time to sync?
Since the wife rarely drives the car, it’s likely that the battery on the FOB got squeezed on for hours while sending signals. The automobile actually displayed that notice a few months ago.
Although I have occasionally left mine open, the problem doesn’t seem to be the same. Mine are undoubtedly the result of me bumping it in my pocket. I start the car and notice the tiny caution triangle on the dash, which is kind of converting. When I turn to the other screen, all I see is “trunk open,” funny
I experienced this around two weeks ago. My trunk was open when I was stuck in traffic, according to a message I received. I turned around, and everything appeared to be in order. Suddenly, the message vanished without my intervention. Then, while I was traveling down the road, it once more did the same to me. Even though it wasn’t showing that it was open, when I pulled over and verified, it was. AFAIK, it hasn’t happened since.
jdstrickland
A wire harness runs from the fender to the trunk lid; as these wires deteriorate and the insulation flakes off, a short results, causing a riot of electrical activity. If you want to examine the wires, you can (and probably should) take the trunk liner off the trunk lid and then carefully pull the grommet down on the lid of the trunk. You can pull and push the wires a little bit as the grommet is pushed toward the fender to see the broken pieces. There is a short section of wire that flexes as the trunk is opened and closed. It may even be inside the grommet.
You might not get a response because this is an old thread, and you might be restarting an old thread. Consider starting a new thread, please.
Man, technology!
Where are my MidWest Winter buddies at? It’s good to have the capability to open your trunk from a distance and even to remote start your automobile. But occasionally, technology catches us off guard! We are all leaving our vehicles’ trunks and doors exposed to the public because of RFID. If there is a cunning auto thief nearby, this may put you in a pickle.
What’s going on here? Your key fob is constantly sending a signal to your vehicle. The trunk opening button is therefore simple to press when the device is in your pocket. This button is frequently quite sensitive, and you don’t even need to be close to the automobile. This might start by just dropping your keys in your purse. Your trunk appears to open itself for an undetermined amount of time, making everything within your car that much simpler to steal.
Has anyone ever discovered their trunk left open or had their trunk open on its own?
I’m sure I locked the car, closed the trunk, and then left the keys inside when I parked the car in my garage yesterday. I’m confident in that because I follow a pattern every night out of caution and to keep things organized.
Anyway, a short while later, I return to the garage and am startled to see that the trunk is completely open. Fortunately, there was nothing inside, but it has me really hesitant about leaving anything of value in the trunk. Has anyone ever experienced this on one of their cars?
Aside: My BMW widgets quit functioning, but I suppose that’s happening to a few others around here. I nearly believed the issue with the trunk was a result of a software bug.
I’ve experienced this problem after closing, and I believe it is related to leaving the car unlocked while the trunk is still open. There is undoubtedly a thread about it that I began a while back.
After my laser jammer was deployed, I experienced this problem. It would open at random or occasionally just as I was closing the driver door.
I ultimately decided to have a look by removing the truck’s rear carpet panel. The sporadic openings ceased when I put everything back together. It appears that a wire was twisted.
It should be noted that locking the trunk from the center console will prevent sporadic openings while you look for the problem.
Thanks for your suggestions, people. I’m going to start using the armrest lock button. I’ll bring it up when I take my car to the dealer for service the following week.
When it initially occurred, I was absolutely certain it was “user error,” but then it happened again. Once more, I reasoned that I must have unintentionally depressed the trunk button on the fob’s bottom when locking. Now that it has happened at least SIX times, I’m certain it is a system fault.
It only occurs when I use my fob to lock the car when I’m in a parking lot with other cars. Perhaps it is detecting the signal from another user to lock or unlock the trunk by picking up on that?
This has happened to me around 3–4 times. There was no user mistake. As I was going to get into my car this morning, it also happened when my wife pulled out of the garage, and I THINK she reflexively hit the garage door homelink switch in her Infiniti. I store my laptop in the trunk of my car, so this is concerning because it usually seems to occur when I’m close to other vehicles.
I experienced this with my F80 M3. One of my pals noticed the trunk was open as I was watching football with my mates at a pub that was only about 10 feet away from my car. In addition, my driveway was the scene. When I left my house after going in, the trunk was wide open. My X5M has never experienced this.
Why won’t my BMW trunk close?
Verify whether the trunk lid’s latch closed. Try popping the trunk lever on the driver’s side kick panel or in the trunk. If that doesn’t work, try popping the lock open with a screwdriver. Additionally, check to see if the bracket that the latch grips is secure.
Why does my car always report that my trunk is open?
When your trunk is not properly closed, the trunk open warning light will come on. It could be necessary to fix the latch if you are unable to close it.
I need to reset my BMW trunk.
You might want to check out this way to unlock a locked trunk manually from inside if your BMW doesn’t have a key slot: To access the trunk, you simply need to move to the backseats of your car, release and pull down the center piece of your seats. Once there, all you need to do is pull the emergency release handle to start moving. Naturally, your BMW must come equipped with an emergency release handle.
Is it permissible to drive with the trunk open?
Fortunately, as long as the cargo doesn’t protrude beyond than is permitted by law, it is not against the law to drive with your trunk open while transporting large items. While the maximum height varies from state to state, it typically stands at 4 feet.
How can I tell if the latch on my trunk is broken?
The trunk not closing or locking into place is the most typical sign that the latch itself is damaged. When the key is entered or the remote is activated to turn on the electric solenoid, the top trunk latch mechanism is often locked shut and difficult to open. The trunk latch housing has multiple tiny parts that, if not properly lubricated, could break, become stuck, or seize up. The only method to resolve this issue is to physically examine the interior parts of the trunk latch cover after removing the cover. While the malfunctioning component may occasionally be repaired, the mechanic will typically replace the trunk latch.
Where is the switch for opening the trunk?
Pushing the Trunk Release button from inside the car will open the trunk lid. To the left of the steering wheel on the instrument panel, there is a button. NOTE: For the button to work, the transmission must be in PARK.
Does having the trunk open deplete the battery?
We’ve all been there before. You notice you left your trunk open overnight as you prepare to depart for work or school. Or perhaps you accidently leave the trunk open while packing your car for a road vacation. In either case, you may be concerned about how much your battery will be affected by leaving the trunk open.
Yes, leaving the trunk open will cause your battery to discharge. Any time a car light is left on, the battery will gradually discharge. The trunk light operates similarly. The battery will be depleted more quickly than, example, the dome light because the trunk light is typically one of the brighter ones in the car.
There are a few things you can do to avoid your battery dying if you’re concerned about it. First, when you’re through utilizing the trunk, make sure to shut it. Second, unplug the battery if you anticipate being away for an extended period of time and being unable to close the trunk. This will stop the battery from being drained by the trunk light.
Take a few measures the next time you find yourself with an open trunk, and you should be alright. You won’t have to worry about a dead battery if you just make sure to close it as soon as you can.
Additionally, if the trunk light is left on and the car is left running, the light will eventually fail. This is because leaving a light on will eventually cause the battery to discharge.