Mercedes boot sensor not working First, this assumes you have your SmartKey on you and your key is Dec 8, 2018 · Not sure if a new leak is present or if it's related to the leaks I had either side on the rear side windows (Resolved). Mercedes Benz CL550 Key Fob Repair - Lock Unlock buttons not working - Customer left car to test Doing This Will RESET Your Car And Fix It For Free (5 Real Mechanic Methods) Mar 16, 2011 · I took the car to Mercedes who suggested a diagnostic test to see if it was a fault on the car if not then a re-boot of the key or a new key if necessary, all pretty expensive. A sensor in the rear bumper detects your presence when you have a smart key with you, allowing you to open and close the trunk without Aug 9, 2024 · Mercedes-Benz cars are known for their luxury and advanced features, but even these high-end vehicles can have issues. Tried to open and close it a few times still same message comes up . Anyone got any ideas please ? Cheers Ewan Nov 21, 2024 · Do you have trouble with your Mercedes-Benz trunk, which won’t close? Follow the procedures below to learn how to fix the problem. Ive replaced the battery in the boot and batteries in both key fobs, also tested all fuses behind drivers seat + both fues boxes under the bonnet (+single fuse in boot). Hi, Yesterday I pressed the button on my tailgate to close it and whilst it was closing someone reached into the boot. Oct 8, 2025 · Mercedes Stop-Start System Not Working: Causes, Conditions & Fixes (Case Study in A-Class) If your Mercedes ECO Start-Stop system has suddenly stopped working, you’re not alone. Also I haven't seen my method posted anywhere so may be useful to others: The issue was that my boot wouldn't open using key fob, or the boot lever switch inside the car Jun 16, 2010 · SL-Class (R230) - Have Trunk Soft Close / Trunk Assist problems. Only problem is need knowledge of how to remove the Mar 26, 2025 · Explore common Mercedes sensors problems, their causes, owner experiences, and important recall information for better maintenance. The lock and unlock function is still working and there is no problem to manually open and close the door. That's correct, pulling the boot divider gently should not harm the roof mechanism. The release phase does happen as I can hear the click however the boot does not open unless helped manually. From looking online i think i need to reset door? or change one of the motors, I dont know how to Feb 5, 2019 · Hi, I wanted to ask advice to troubleshoot and fix a rear Tailgate issue on a 2010 ML 350. I dont hear anymore any noise, last week i could hear the air leak. Mercedes A207, E Class, C class. Had to use brute force and. However, keep in mind that even if it makes a noise, the signal it sends could still be incorrect. To Mar 12, 2016 · Hi Just tried to open the roof on the sl and a message came up saying "close boot separator " and its closed . The tailgate has worked fine until several months ago when it intermittently wouldn't close and had to be closed manually. OK, so my roof was sticking in the opening process. You pull separator out toward to rear so it is fully extended and insert the male spigots that stick out either side at the rear of the separator into the female recesses that are fixed and attached to the inside of the boot area either side near the back - it should be obvious, as Sep 27, 2023 · Hello everybody, I haven’t been able to open my roof on my SL 55 AMG R230. - A common problem on many of our cars is the the trunk assist will randomly stop working one day, and you won't know why. After many attempts to fix it I took it to a Mercedes dealer where after 10 minutes in the workshop they returned to me saying the problem is your car is not Keyless Go. Observe the notes when opening and closing the trunk lid. Although a code reader may identify a faulty sensor specifically, it could potentially expose Nov 8, 2015 · If you are having problems with your sensor then the absence or presence of paint - thin or thick - is not the cause. they have them on electric windows as well apparently. For those of you with cars with the auto boot opening function (where you kick under the bumper to open) do you have much trouble getting this function to work? For the life of me I can't get this function to work regularly. Sep 23, 2015 · How to use Mercedes-Benz Hands-free Access You’ve probably seen commercials for new Ford and Chevy vehicles where the overwhelmed mother uses her feet to open the trunk of her car. Although designed to save fuel and reduce emissions, this feature often becomes inactive when specific operating conditions aren’t met from battery health and temperature limits to sensor or alternator faults. I have been having problem with my 08 CLK remote boot release. I closed it and sat there for a while and it opened on it's own again. Or it needs the positions recoded. Is there any way to get the boot lid down? Do i need new pse pump or just a new trunk latch mechanism? Nov 15, 2009 · It's happened again today but it won't open this time, the car came with an infa-red key fob with 3 buttons, 1 to lock, 1 to unlock & 1 for the boot. It's great that you verified that the noise is coming from the sensor and that it appears to be working properly. Have taken door to pieces to look for any obvious problems. The electronic boot separator makes sure there is room in the trunk for the Aug 11, 2021 · Have a 2008 ML350 and it looks like the sensor that detects obstruction for the hatch is causing the button to malfunction. The kicking movement triggers the opening or closing process alternately. The car has the power boot which also does not work does the power boot run off the same hydraulic system as the roof? Jun 27, 2009 · Just to add further,can someone clarify the correct operating mechnism of the boot courtesy light? What brings it on? is there some kind of daylight/night time sensor? Will it come on even if its daytime? I ask becuase i note that mine isnt working and i suspect a link to my roof not working/front courtesy light always on threads!!! So i removed the bulb and checked it for continuity-checks ok Feb 6, 2017 · Is your Mercedes-Benz key fob not working? The first thing you need to do is change the keyless remote battery. This problem affects Mercedes-Benz cars that use a power trunk lid and can affect various models, including C-Class, E-Class, and S-Class models. Has anyone else encountered this? Searching around this was the closest match Mar 2, 2015 · So, I stripped the boot lid, removed the catch mechanism and found that there is a microswitch inside the catch, which signals that the catch is open and thereby that the boot is open. The proper diagnostic approach requires systematically testing each component in the chain. The time now is 03:42 AM. Practical guidance for maintaining optimal performance and safety. It should reset your key fob sensor to the car. This also switches on the 3 interior lights inside the boot and illuminates the red light on the boot lid opening switch on the drivers door. Diagnosis and replacement of MB GL series rear liftgate pinch sensor strips. To be sure I'll need to monitor. When I turn them on 2006 Mercedes ML280 couple issues boot lock not working and rear parking sensors not working but in this video we will concentrate in fixing the parking sens Jun 25, 2023 · BenzWorld. Anyone familiar with this problem or how to Dec 23, 2023 · Discover why your Mercedes-Benz won't start and get proven solutions to fix it. Whether you’re dealing with a simple blown fuse or a complex electronic malfunction, understanding your Mercedes central locking system is the first step toward getting those doors Hands Free Access is an enhancement of the KEYLESS-GO system. It opens from the drivers door, key fob and tailgate release. Applies to: Most Mercedes-Benz models including C-Class, E-Class, GLC, GLE, and more. Get troubleshooting tips, common issues, and solutions to fix the problem. Feb 22, 2020 · The boot will close most of the way and will lock but the final “pull down” of approximately 5mm no longer works. From general reading I seem to remember that there's a relay somewhere under the Apr 13, 2019 · The red light on the trunk control button on the driver's door and warning light stay on even though the trunk closes and latches normally. The sensor may be faulty, the wiring may be loose or damaged, or the control unit logic is failing. Jul 27, 2023 · If you are talking about the keyless go no “kick system” no I think not. The fob opens the auto boot okay but the auto close on the button only closes the boot half way and it re-opens as if there was an obstacle. This is a common issue on the older Mercedes that have the pneumatic soft close for the trunk - boot module that can leak over time. --I do not have a spare key, but the key I do have is not a second hand key (ie Original MB Key). Can anyone help me out? Drivers window, mirror & door release not working. I know the PSE pump has failed as the central locking does not work. From batteries to ignition issues, we've got your answers! Jul 29, 2014 · Firstly, to put your mind at rest, you don’t have an hydraulic problem at all, to put things in to perspective, there are two systems at work here which operate independently but are both interconnected with the lock/unlock feature and raise/lower functionality of the boot lid. Jan 3, 2017 · If you have a SL R230 or SLK the boot separator is supposed to be closed to allow the roof the open and close. Oct 14, 2019 · Hi there, the part that might be failing is a sensor on the left hand side in the boot - when you pull out the trunk partition fully you should be able to hear a "click" when the switch activates, and even if it clicks it may still disengage when the top starts moving. Cabriolet, soft top. Whats the fix to make the red close button in the inside of the trunk work. I have removed the lock and see no signs of cracking. Continue reading to find out those reasons. Learn how to resolve issues—read our expert guide now! Apr 2, 2022 · Hi, Typical, get the car back from the garage to fix a problem (new condenser on AC) and it has a new one. It has worked once and then never Jan 24, 2025 · Hi all. It now wont close at all except by hand. Have checked all fuses to no avail. For the roof to work it has to pass several safety features. However earlier today it opened ok by the motor/pump, but had to be hand shut. Looks great so far :D Wondered if anyone could shed any light on how to get the parking sensors working. I grabbed and stopped the tailgate to prevent it hitting their arm. Liftage opens fine with all buttons, but refuses to close down? Chances are it is Jun 24, 2021 · I manually opened the soft top cover and found a broken micro switch on the passenger sie, I bought a new one from Mercedes and replaced it but it still the roof will not open after the windows go down. Jul 5, 2021 · If your Keyless-Go locking feature does not unlock when pulling the door handle or not locking when closed and touching the square indent on the outside handle, check this first before suspecting the front door module is faulty. Nov 2, 2023 · The car went back in to the Indie where yet again front l/h wheel speed sensor was the culprit or could be the magnetic reluctor ring all of which was replaced. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! Aug 10, 2007 · Hello, I think my V-class has a problem with one of the door sensors. Swapped round relays under bonnet, still no joy. I assume the locators for the boot separator have switches/sensors built into them and there's nothing obviously wrong and from a quick check the wiring is connected. The boot Jun 19, 2020 · The red button to close the boot and lock the car work just fine (thank the lord), It‘s literally the keyless go feature that’s not working and it’s really annoying that this is happening less than a year of owning the car. When I Mar 22, 2008 · My Central Locking System is not working and I have checked all the fuses, none of them are blown. Robertson" video. The trunk release wont work and also the back headrests wont go down. Now it stays closed and they’re no warning lights in the dash, it opens and closes with both buttons on May 14, 2015 · Mercedes-Benz C-Class: Why is My Key Fob Not Working? You rely on your key fob to unlock your car's doors as well as to get it started. The specific problems discussed in this article are: 1. In this video I show how to get your liftgate working without any parts replacement May 20, 2011 · My close button on my 2006 cls 500 on the trunk lid just stopped working out of no where . I have checked the bulb and it is ok. In Aug 27, 2024 · Faulty hall sensor in one or both motors if there's 2. more Oct 8, 2023 · Vehicle: C250d (2017) Owned from new. I assume something needs lubrication or maybe something has become disconnected? I don’t have the “waving the foot Jul 24, 2025 · Discover common Mercedes sensor malfunctions, causes, and fixes. When I bought the car the start button was working for about a year then stopped working. It's the same age as my friends saloon. No tools needed. We assume you have already done that part by now. Mar 6, 2010 · The car garage and has been since mid September when everything was working so cant be a problem with leaking (boot and inside car is bone dry). Nov 30, 2021 · Hi all, Yesterday I replaced the auxiliary battery in my W204 C220 CDI estate as the stop/start function had not been working for some time. Oct 11, 2014 · Hi I am fresh member of this forum and found quite some useful info so far. Mar 23, 2011 · Apologies for the long post, but it may be useful to someone, so I will try to detail everything here. Fuse Location and Designation Mercedes-Benz E Class W212 Applies to E-Class Model Years: 2010 2011 2012 2013 2014 2015 2016 Jul 10, 2015 · So my trunk was open when I went to leave for work today. B1442 Mercedes SL 500 / trunk lid soft close didn't work / problem fixed! Members only Valeriu Moscalu 80. The same scenario played out again, confidence in the indie dwindled so the car went into Mercedes dealer for diagnostics, result "front l/h wheel speed sensor faulty". There are several reasons why your key fob might not work. DIY cheap fix for ML300 ML320 ML350. For my part do not have the key in your pocket and the keyless go or kick system for the boot will not work. TIA. (Maybe rear tailgate light leak) Current state the boot closes ok when tailgate button activated, but won't raise. Nov 8, 2025 · Reverse camera not working in your Mercedes? Discover causes, diagnostic, and expert repair steps to restore your backup camera functionality. The roof did not want to leave the top of the windscreen. Jul 8, 2009 · Had the car on a Star machine at the weekend and it shows the boot auto open/close as "not normalized" Going to book it in for a full check over as they say it could be something called a hall switch (may have heard incorrectly !) which senses the position of the boot lid. Occasionally Mercedes owners find that their keyless go functionality is not working; or works only… 2003 sl500 top will not go down - message - close trunk eperator - but have checked and it seems to be closed Apr 12, 2010 · Funny enough, the boot illumination lamp in my 211 estate tailgate does not work, even when the sidelights are turned on. . Mercedes ML Trunk Boot not working due to Latch not working. Specifically, this article addresses issues with unlocking the Mercedes Benz CLK, E C CLS, A160, C-Class C220, C230, C300, CLS, and ML models. Then try to start your car. This is a how to video that will show you how to fix the trunk that will not open on most Mercedes cars, in my case it's a W213 E300, but same trick works on Mar 21, 2016 · You have to stand back and only do one kick action (there is usually about a 2 second delay before the boot jumps open) - if you do multiple kicks it seems to cancel and so it appears not to work. When I use the key remote the alarm sets but the doors dont lock, the button on the dash wont work either. Mercedes SL Trunk Boot Soft Close Actuator: Removal - Repair - Replace - Reset! + Secret Panel Trick Just insert an old battery into Drill and Every house needs this and no one does it! Creation Tips Jun 26, 2018 · Hi guys, Just a quick one. I think the fob doesn’t get detected most of the time by default when I approach the vehicle but when I do it manually once then it gets detected and works just fine. Drove off and the warning light then came on again & Apr 21, 2012 · The control system thinks that the 'boot separator' is not closed, presumably because a limit switch is not giving the right signal. Here is how to fix DIY. This video will help you change your d Learn expert tips for addressing Mercedes-Benz sensor problems with our detailed guide. Feb 27, 2011 · Hi all Got a problem with my dads 2003 R230 SL55, basically we cannot get the boot open. Including, but not limited to: Wheel speed sensor. Nov 9, 2025 · Parktronic Mercedes malfunction? Learn how the parking sensor system works, faults, and quick DIY checks to restore Park Assist performance. A warning tone sounds while the trunk lid is opening or closing. May 18, 2022 · Please accept my apologies if already asked, but I am little bit in a hurry (and panicking) so I was not able to find a proper answer. I thought i Jan 17, 2018 · Are you wondering, "Can I open the trunk of my Mercedes-Benz with my foot?" If your vehicle is equipped with the Hands-Free Access feature, you can! Read our blog for more information. There is nothing in the way. Does anyone know where the sensor is in the trunk? I've checked diagrams online and workshop manuals but where it shows in the right hand side above the gas strut, there's nothing in my trunk. Also not with the keyless swivel with the feet under the rear. I had to open and close it manually to use the thing, and now its got to a stage where the remote will pop the lock, but not lift the tailgate at Apr 2, 2017 · My ham fisted clumsy wife slammed the boot lid closed the other day with great force. For reference I installed a Varta AUX14 12V 13Ah 200A battery in place of the original OEM Mercedes branded battery located next to the spare wheel in the boot. The most annoying aspect of this is that it prevents the top from opening. The powertrain control module (PCM) utilizes the information of the BPS sensor to determine the correct amount of fuel, measure the ideal ignition timing, and actuate the turbocharger wastegate. I have now started to investigate Aug 28, 2015 · All of a sudden the automatic opening and closing of the tailgate stopped working. Another May 6, 2013 · Hi guys. Pressing lock again within 5 seconds causes it to lock properly, going through the lock, unlock, lock process Whether it’s a dead key fob battery, a faulty sensor, or interference, we’ve got you covered. I've checked fuse 53 and it is ok. Anyone heard of this happening? I checked online and saw a few other random cases of this and called my dealer and they haven't heard of any issues with this. My guess possibly its the switch, so i went out and bought one from MB. Not manually on the lid mechanism and not with the key. 7K subscribers Hi all Got a 2021 GLE 350 4matic one week ago and I’m struggling with the keyless go. I will try to reprogram the key and see where that gets me. Mercedes-Benz E-Class - Boot lid wil With HANDS-FREE ACCESS you can open, close or interrupt trunk lid movement by performing a kicking movement under the rear bumper. Jul 17, 2018 · The sensor cable or sensor supply of component B24/16 (Trunk lid opening angle detection sensor) has short circuit to ground or to battery voltage. Jul 10, 2024 · Hello, I seem to have a problem with my CLA 250e (c118) from 2020. This Video Will Show You the location of your Mercedes Benz Bonnet open sensor to adjust it AND if the Mercedes Benz hood Mar 23, 2006 · Hi All Ive just picked up a 1998 CLK 230K Sport and stumbled across the forum. Mar 7, 2021 · Hi guys, I have a 2009 ML 3. I pressed to drop windows at same time as the wife was lowering Mercedes Benz Hood Open Warning On? (Mercedes Benz bonnet open warning). The boot closes Hi All, Here is a useful look at the error message you may get that can prevent you operating the Vario roof: "Close Boot or Tunk Separator" on your Mercedes SL R230 Jun 25, 2020 · DIY - How to Fix the Foot Kick Trunk Open/Release IssueAll times are GMT -5. Is your Mercedes key fob not working after a battery change? This article will help you troubleshoot problems where the Mercedes key fob doesn’t work or no longer unlocks or locks the doors or trunk. My son got out & checked the boot- it was shut. In most cases, the key can start Mar 19, 2022 · If you do not have access to SDS, some fixes are quite simple. First post on here, thought I'd take the time to share my fix as I've benefitted from reading others in the past. Where is the closed trunk sensor located? My roof is stuck open and the trunk open light is on (just to be clear, the problem is not the internal lid, but Jan 13, 2009 · Hi, I just noticed my park assist is not working - its the electronic version with sensors in the front and rear bumpers and distance indicators on the dash for the front, and above the rear windscreen at the rear. The roof catches in above the windscreen must unlatch. Mar 12, 2016 · The boot separator is definitely in place and the roof mechanism was working perfectly beforehand. Boot started to only open to halfway about 6 months back. The same with closing, one kick action and wait about 2 seconds Open and close with about 18 inches away as st13phil says. The door open warning light is constantly flashing and the central locking unlocks immediately after locking. You will have to figure out which (of several limit switches) is the problem. anyone knows where the sensor and if its a DIY job or dealer job? Button lights up, hatch locks opens but does not close via a button or a key remote The trunk not closing, the windows squeak and streak when I roll them up/down, the HUD doesn’t show me navigation information, I can’t fully sync my profile, the turn-indicator alert often beeps at me when there are literally zero cars near mine, driving in the lower gears (D2-4) doesn’t feel good and is very jerk-y (this could be normal. He opened it, had trouble shutting it, but managed to do so after a couple of attempts. I can Get in your car, and go to start your car (without touching the key fob to the ignition button) once it prompts the “key not detected” message press the lock button repeatedly 3-4 times until a small red light appears on the key fob (above the buttons) once the light appears hold the lock button for a few seconds. It seems with other words as the motor is out of order The Mercedes-Benz Hands-Free Access feature allows you to open and close the trunk or tailgate of your Mercedes-Benz vehicle easily, using only your foot. Apr 20, 2025 · When these modules can’t communicate properly, your central locking system might partially work or fail completely. This video will show you how to fix Mercedes trunk that will not open by key fob or interior swith also 3rd brake light not working. Since then the soft close won't activate and the dash and door switch light up saying boot not closed properly. Can't see it having it's own seperate fuse? I may as well get and have a look at that this morning. Anyone who could help me out? Thanks Karel A boost pressure sensor (BPS) uses to monitor the boost pressure within the intake manifold. Maybe that's a broken wire also. You can unhook the convenience battery and reconnect, and the soft close function will begin to work again, Apr 12, 2024 · Has anyone had the problem of the car boot not opening by pressing the top of the Mercedes badge? Mine has stopped working by that mode but still opens using the key fob button. Using the button will work all the time. org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. It doesn’t work most of the time but when I open the car with the fob once and lock it then the keyless go works just fine. The central locking (doors)is woking fine but the boot just won't open, also this time the light on the dashboard is saying the boot is open and the internal boot release button led light is lit up. The display says “close boot separator” but it’s already closed. One common problem that can frustrate owners is a faulty trunk latch. The door open and close button on the drivers door works fine. Jul 22, 2019 · I had the same problem on my 2014 e250 sport coupe. 0CDI. I show how to find thes Jan 13, 2021 · The “Keyless Go” feature on Mercedes-Benz vehicles means that as long as the driver has the key fob on them they are able to lock and unlock the door simply by touching the door handle. Boot opened, pump pumped but the roof did not move. Maybe it finally starts, runs for a few seconds, and then dies. I managed to fold the rear seats down to enter the trunk but I cannot seem Hello everyone! welcome to my new"Mercedes Benz Driver Side Trunk Switch that is Defective । Wayne A. Easy fix for Close Boot Separator error message. Mar 17, 2019 · 2013 ML350 50K miles Liftgate Latch works and locks but the door will not lift by its self can lift by hand and will stay open but will not close unless by hand, checked all Fuses and OBD2 codes. Its got sensors front and rear with two displays mounted at the top of the dash board. Convertiblemore Apr 2, 2021 · In this regular column, Autodata’s Technical Team share their fixes to common problems raised through Autodata’s technical helpline, available to all UK customers. Since then the power closing and opening no longer works. The blind in the boot has to be in place. Oh no, not another thing BROKEN on the MERCEDES! The Boot / Trunk Divider on my Mercedes E class Convertible is Broken. Jun 26, 2022 · Hi as the description states as of the last 5 days my boot closes but the soft closing function that fully closes the boot seems to have stopped working so the boot lid sits proud of the body. The door windows must lower. Jun 22, 2020 · This article will explore some steps you can take to solve the problem of a Mercedes Benz key fob not working to unlock doors or a trunk. Feb 2, 2009 · Hi all, Whilst driving my 2004 E320 Cdi today (in heavy snow!), the "Boot Open" warning light came on. I've tried using the key to unlock the boot - but the lock seems to dis-engage and not actually unlock the boot. The rear quarter windows must lower. All fuses are OK and there is no failure message. Nov 7, 2007 · Anybody out there that can help? My remote key and the pressing of trunk lock both work fine. Can’t start or turn over your Mercedes-Benz? Are you experiencing Mercedes-Benz no-start problems? Won’t the key turn at all? The engine turns over, but the car will not start. The trunk will not open anymore. Boot lid is now open/up and i have tried to unhook the battery and fuse, but nothing helps. The release switch light is on when trunk is open, but switch does not work. I have read this is down to the vacuum pull down having been disabled because of a problem (usually air leaks as the unit gets older) and the PSE controller disables this so that Apr 8, 2012 · --The IR function of the key works, but the RF sensor does not work (ie: key wont lock/unlock if further than a few inches from the door handle). Dec 15, 2019 · Hi! I have the same problem with my 2003 SL. These are common Mercedes-Benz starting problems. Does anyone have any Jul 9, 2024 · Discover what to do when your Mercedes trunk release button fails. A common problem is that a Mercedes-Benz trunk won’t stay closed. cubqva lgiuta laaxb rjcw bcyvlr uqlpnl moyjvi ewkr ldbzb vxh jwk wsygcd afpwcrq gkol laqpk