Mercedes 48v issues forum 2021. Jan 24, 2021 · I bought a $95,000.

Mercedes 48v issues forum 2021 Aug 7, 2024 · Today, more than ever, there are ongoing software updates to fix issues, and these updates are done after the OEM has oftentimes worked with multiple suppliers because coding changes can affect multiple controllers in the car. should be about 35-55V, but car batt only show about 3,9V when I have real data again from car, I will post again. Pre-facelift E450 was the only variant that didn't get 48V mild hybrid in 2019/2020. Also, 48-volt batteries in tandem with 12-volt batteries on the same car and dealerships without knowing how to remedy the failure of cars with new complicated computer relationships. I opened the 48v battery and charged it with 48 v charger and now it shows 48v but terminal 40 doesn't provide power out to the ISG/ car does NOT start. Towed the car over to the local dealership. Jan 24, 2021 · Comments of the 2021 years have reports of dealerships unable to diagnose and resolve issues. The GLE 350 engine - key facts and specs. Then it sat in my garage for about three weeks (I was out of town). You'll see a bunch of new vehicles getting torn apart from many manufacturers. I selected the Car AGM option and waited. Mar 31, 2022 · 2021 AMG GLE 53 Custom Wheel to 23" and Tire Choice. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! There have been some issues with the 48v battery but I think the prevalence is overweighted on forums. M156 head bolt problems - Page 16 - MBWorld. 12v is still fairly important , even for starting the engine. Been severely disappointed with Mercedes USA Corporate, Park Place Mercedes in Dallas & Autobohn Mercedes in Grapevine. "mild hybrid" seems to be for lack of a better term, like "partial 48V electrical system with energy recovery" or whatever else more descriptive, just don't work for marketing ;-) Oct 28, 2022 · Kia problems have been reported attributed to the 12V battery (example here) Kia Ceed 1. (Dec 2019) Problem stared again in late Feb 2020. Everything that has to do with Mercedes Benz, Tuning and most importantly, keeping these cars on the road. This is worrisome for the future. Jul 3, 2023 · 2021 - : S350D, S400, S450, S480, S500, S580, S580E, S500 Maybach, S680 Maybach Sep 14, 2023 · Put 3000 miles on it with no problems whatsoever. In this The 2021 also has their new inline 6 engine whereas the 2020 has the older M276 although you get a boost in HP over the 2018 model. Short runs in the car (lockdown rules) fixed the problem for a day at most before they all returned I bought a CTEK MXS-5 and connected it up. Every car just has a different problem, it’s really difficult to pin down. Make sure it’s the Mercedes warranty not some third party one. 2021 Mercedes Benz GLS Complaint Summary Apr 20, 2024 · The problem I have is when using the engine in conjuction with the electric motor. org have decided to close their investigation into this matter, meaning they no longer need to speak with people who had issues with their vehicles' batteries. Luckily, I was on a side street about to get on the highway so I was able to pull over. First time in 40 years ,have had a bad one,so best of luck in your next purchase👍😇 Jun 28, 2021 · Mercedes-Benz GLE 450 owner says th 48-volt batteries cause failures to start the vehicles. That was a GLC 300. I'm looking into a GLS and notice there are some reliability issues with the 48v mild hybrid system. Jul 26, 2023 · Mercedes-Benz has even issued a technical service bulletin that addresses the 48V on-board electrical system problem. Forums Mar 7, 2022 · Here is the tutorial on repairing the Mercedes Benz 48 volt mild hybrid battery using CG100 Prog III or CG100X programmer. Just browse around r/Justrolledintotheshop. Mar 17, 2024 · 2021 GLS 450 Mercedes Benz within several days of purchasing in late Fall 2021, while in motion at 65MPH or more, the vehicle suddenly flashed all kinds of malfunction warnings (the entire dashboard was lit up w every system “warning”) including 48V battery code, within seconds the car shut down while driving on the highway, no power steering, no brakes, no anything – nearly lost our Mar 19, 2024 · How awful,the auxiliary battery presented problems in first 3 weeks on 2nd shut down I refused to take back car, now have a brand new one and never sit in it with anything running ,or reading lightnon Nada,like you lost all faith in brand ,but My local dealer Bolands were meriful and replaced it. Feb 14, 2023 · The Mercedes GLS is the top-tier GL-class vehicle; it is the S-class of the SUV world, and it is one of the very few cars competing in the full-size luxury crossover market, but it does have some common problems. 8 amps would try to consume 230. It has a relay that turns off the battery when the voltage drops. Fall 2020, as soon as it's colder, the problem starts again. org Forums Jul 2, 2023 · Other Cars - Mercedes 12v battery critical - This is a 2021 with 48v system --- I thought it no longer had a 12v battery and just stepped down the 48v for a few legacy 12v systems. (Lake district and back last week). problem detect on N80 (if not wrong) in G1/3. Jul 26, 2023 · Sometimes, it is also important to look at problems that other Mercedes-Benz models have. Another relates to a recall that affects the 2021 E-Class backup camera. Initially, it was mentioned that the sensor module of the hybrid/high-voltage battery had a malfunction, it was suspected to be an internal electric fault. It's on current recall but this is after I had to replace mine on a 2yo GLS450 in March for $5k. Apparently I was wrong. Apr 5, 2021 · (04-06-2021, 05:34 PM) fanatrally Wrote: (04-06-2021, 02:44 PM) deimonk Wrote: Replacing the 48v battery will solve the problem. Not have any ways for repair?Only replace? May 19, 2024 · GLC Class (X254) - Bad user experiences with issues with my 1st MBUX updates - Yesterday, Mercedes 2024 GLC 300 4matic SUV's MBUX said an update available was available. Well, maybe for the cars that have auto/start stop issues, largely the SUV’s… some have 48v system issues, especially the GT’s… another car I just worked on last week had a once in every 8,000 mile problem that said: “do not shift gears”. could have been some I have a GLE 580 and love it. June 28, 2021 — A Mercedes-Benz GLE 450 class action lawsuit alleges the SUVs suffer from problems Appears MB has zero idea how to deal with it. Aws Wrote: what are the faults in Xentry? Hi, thanks for reply me, too much sorry I lost all picture I take when diagnose with xentry. Jan 7, 2021 · Hello Forum! We leased a 2021 GLA 250 and have had a number of issues and disappointments with it. I delayed it since I wasn't ready since it might cause problems. The M276 is a pretty solid engine but the newer I6 is probably a little too new to tell yet but so far it doesn't sound like there's any issues with it. 110 being sold throughout the U. . Nov 23, 2022 · Another user on the forum had a complaint about a pulley making a lot of noise, and was effectively told to suck it by Mercedes after they couldn't fix the problem 2021 GLA 250 pulley noise AC sounds like it's not really a car issue, depending on the kind of environment you live in the filter can get dirty quickly. Dec 5, 2021 · The car (purchased on Aug 2021 ) failed to start with the stop vehicle battery icon on the dashboard. From the complaints made with the NHTSA about the 2021 GLS, it is clear that this model isn’t exempt. The Mercedes GLS suffers from electronic gremlins, 48V secondary battery malfunction, inferior interior plastic, and an ineffective Aug 23, 2023 · The most common problems:Camtronic problems, carbon buildup on intake valves, additional emission filter potential issues at high mileage. One describes multiple defects and another focuses on a vehicle speed control problem. All other models got 48V in 2019 (still pre-facelift). I found CPO models near the same price as some non-MB dealer options, and ended up with a same 2020 model year as a CPO I was cross shopping, but the non-CPO car was registered later by 14 months and had a factory warranty LONGER than the CPO option. My local Mercedes service manager tells me the Mercedes "fix" is to take a "sunday drive", or use a trickle charger. Shark450; Jul 1, 2022 Mercedes EQ Forum 7K members. For example, we have seen there is a tendency for some Mercedes-Benz models to have serious 48V battery issues. saying (what Mar 21, 2024 · The recall affects 116,000 2021–2024 GLE and GLS SUVs from Mercedes-Benz, Mercedes-AMG, and Mercedes-Maybach to fix an issue with a 48-volt ground connection that could come loose. 3rd visit: replace the battery Jun 10, 2021 · Hi All, Have a 2021 GLS450 with barely 4K miles (purchased in Jan2021), and car would not start this morning. So, if we take that (required) 57. It's currently at the dealer for repairs on the issues below. Aug 1, 2023 · In early July, a plethora of Mercedes-Benz passenger models, including 2021-2023 GLC 300s, 2021-2023 GLC 43s, and 2021 AMG GLC 63 models, were hit with a recall over a fuel pump problem. 6 watt fuel pump and Sep 20, 2022 · The Mercedes technical documents say that you cannot charge the 48v directly, so I suspect that when you connect to the jump points it goes through a control box sat on top of the 48v, that directs the flow to the 12v in the boot floor and then it uses that to send converted current between the 48v and 12v. At this point, attorneys working with ClassAction. 1. 3 minor issues: 1) driver side headliner microphone stopped working, resulting in having to shout into the passenger side headliner microphone in order to be heard on a phone call, or using "hey mercedes", 2) audio volume adjuster does not gradually raise/lower volume, instead it jumps several levels with each turn of the adjuster, 3) the May 16, 2024 · A forum community dedicated to Mercedes GLE owners and enthusiasts. Jul 26, 2023 · We are looking at these problems together because 5 of the electrical system problems in NHTSA complaints link to engine problems. Oct 17, 2020 · Hi, I had the same problem with 2016 GLE 450 AMG, (bought new from the dealer) The first week I received it the car would completely shutdown I would have to open the door in order to restart it, for 4 years I had nothing but problem after problem, mostly electrical. Also, I see that a 12v charger might charge 48v through a converter, but no Oct 18, 2022 · Dealer just diagnosed the problem from examining fault codes. I’d say go gas personally. Voltages are good, the battery is 2 1/2 years old and I have been doing long journeys. I replaced the pyrofuse, replaced 12v battery. Aug 7, 2021 · (08-08-2021, 12:35 AM) A2ua Wrote: charge with terminals under bonnet as usual with 12V charger. 01: 48V Battery Benefits By using a 48-volt electrical system in new Mercedes-Benz vehicles, the car can be powered solely on the electrical system battery instead of using the drivetrain batteries. 5 MHEV 2021 "Check 48V system" I'm guessing (hoping!) that a higher capacity 12V battery is fitted to Kia Ceed MHEVs than i20s, but the Hyundai/Kia 48V system is undoubtedly complex and complexity and reliability are often unhappy bedfellows. They quietly released an official recall in February which was a software update that seems to have solved the issue. Therefore, introducing outside coding could cause issues in the long-term. My E450 is only four months old with 3100 miles. These consist of the 2021-2023 CLS 450, 2021-2023 E 450, 2021-2023 E450 All-Terrain, 2021 AMG CLS 53, 2021-2023 AMG E53 Jun 25, 2021 · Mercedes Me is reporting a critical battery condition and has also sent me an email to that affect. K. The 350 version of the Mercedes-Benz GLE will cost you about $60,000 and it's considered to be pretty affordable when it comes to Mercedes SUVs. Since new there has been an annoying audio sound that seems like it is coming from the front speakers or possibly the driver-aid electronic assembly at the top of the windshield. 48v battery is main power source for starting/stopping your engine at stop lights, etc. dc/dc converter is glued to 48V battery Oh I did try this but did nothing, I can try again but apparently they have a relay that shuts the battery down if it gets low, it's ment to be inside the battery but I have no idea, daxxer can do it but not been online for a while And the 48V battery system has been problematic for some folks. com Mar 5, 2024 · I have a 2021 GLE 53 with rear accident. Home. does not strike me as a big problem considering how many cars have this system. Dec 24, 2021 · One consumer products law firm has filed a class action lawsuit against Mercedes-Benz and others are investigating multiple complaints about sudden vehicle battery failures across the Mercedes-Benz line. Jan 24, 2021 · I bought a $95,000. So I’ve tried comfort mode and ECO mode to see if the engine kick-in is more subtle. 2022 GLE 450 suv with coolant issues. This is Mercedes' new "hybrid" design, supposed to be more fuel efficient. However, my dealer did let slip that I’m not the only one. 2021. in actual value there terminal 40 point is bellow from actual value. Aug 20, 2021 · Bought a new UK model i20 Premium 48v mini hybrid at the end of June. Feel free to share your classic Mercedes-Benz here! Check out our new wiki to help you troubleshoot and keep your Benz running like new. 4 watts. The display built up to Stage 3 then appeared to stall. While boasting hybrid drivetrains and complete plug-in hybrid models and being packed with electronics and features, the Mercedes GLC Problems are seemingly high. From a basic google search I’ve found it not just limited to the A6 but a whole bunch of other Audis (and Mercedes) that use the 48v battery system, including those in the screenshot I posted. I’m getting the distinct impression there is a flaw, whether mechanical or software, that MB don’t know how to fix, and it doesn’t just apply to C Class. Gave up. ) The very big issue is the engines head bolt issue. Feb 14, 2023 · The Mercedes GLC is the successor of the GLK and competes in the compact luxury crossover segment, and is also seen as a mid-size SUV. In 2020, with the facelift, MB switched the 450 to the M256 and introduced 48V with that too. mercedes-Benz STARTUNED septemBer 2021 5 hI h enerGY At 48V, that 2. Mar 20, 2023 · (03-20-2023, 01:38 PM) Eng. Also the doors locked has been Feb 19, 2023 · The Start/Stop finally delivers (I turn it off in my T6!). And don't forget about the thermal paste. So I drove it. They only have done some updates, now he has to wait for the next summer to check if it will happen again. 00 2021 CLS450 this past August 7 and it ran great until yesterday afternoon when I received a message on my dash stating "48v battery malfunction". Feb 16, 2024 · I’m in the market for a used E450 All Terrain, likely 2021 model year, and there are currently at least 2 listed for sale with lemon titles because they’ve been repurchased (and apparently repaired) by Mercedes because of “battery issues. However the car display is not showing a problem as it did correctly on a previous occasion. It seems to be the now-common problem of the faulty 48 volt battery needing replacement. I’ve read about this battery issue in several forums. Apr 14, 2022 · April 14, 2022 – Investigation Closed Thank you to everyone who contacted us in regard to their Mercedes 48-volt batteries. ” Feb 2, 2014 · E63 AMG Things I would look for with this car. Came back from Europe, COVID started. Mines a hybrid and have no issues at all but I’d also strongly recommend getting the extended warranty through Mercedes as well. If I select sport mode the engine just wants to rev so high and it sounds awful. 19 33K Oct 29, 2021 I previously drove a Hyundai Tucson and did many 8+ hour road Literally just had the car in a few months ago for a routine check/oil change and not a single warning. This is just due to volume of production and the demand. org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. Just the way the car starts when you jump in, due to the 48V motor spinning it up, it's kinda neat. A few days ago I received an automatically generated email from Mercedes Me Connect telling me my battery charge status was “critical” and to drive the car for 30 to 60 minutes or connect a battery charger. May 7, 2024 · I've had the same commute for over 30 years, and owned Chevy, Ford, BWM, and have never experienced this issue. Mercedes Dealer can't find the problem and and they also can't reproduce the failure because it has to be very hot weather. Lawsuit List Most Popular Jan 31, 2022 · I read on USA forums of many problems with the 48 volt battery in these cars, but they all seem to be different to my problems. Jul 24, 2018 · Got the car in March 2019, problems started in October 2019. 1st visit: there is nothing wrong (Nov 2019) 2nd visit: we'll replace the faulty battery. Feb 19, 2024 · Mercedes Needs To Fix 48v Connection On Several Models Over Fire Risk. ISG worked briefly Cruise Stop Start CSS only worked one day we took a run of 50 miles then neither worked for weeks. I have about 4500km on it so far and have many of the same issues you have raised. The MB warranty literally just extends the factory coverage and mine was very cheap to add. Jan 5, 2021 · 4 months and 3,000 miles into my 2021 GLE53 AMG. The one engine complaint that isn’t included in an electrical system problem, does relate to loss of power. In 2 years you will know for sure whether it's been permanently solved, and if so - I would say it's as reliable as any other Dec 8, 2023 · I have a 2021 GLC300 with 48v mild hybrid system and I do read the forums regularly but cannot recall too many posts about problems with this system but as has been said it is relatively new. Jun 22, 2021 · A class action alleges Mercedes-Benz was aware that the 2021 450 GLE suffered from an electrical system defect yet did not disclose the problem to drivers prior to sale. Jun 5, 2022 · It may be that the reason the very latest (2025) Hyundai i20 models are no longer mild-hybrid is because of problems with the 12V + 48V system, but equally likely that choosing to downgrade the 'mechanical' specification and upgrade the 'tech' specification was a costing decision. Towed to dealer and they mentioned it is a defective main battery. Does anyone else have a Mercedes sitting a dealer waiting for a 48V battery system? My 2021 GLE450 (which has been problem after problem, even outside of the 48v issues) has been parked at the dealer for a month, I was told it would be ready 9AM the next day on Oct 17, then I was told 5-8 business days, then "a couple weeks" then "end of Sep 23, 2019 · BenzWorld. Apr 1, 2024 · 2021-2024 Mercedes-Benz AMG GLE 63 S A 48-volt ground cable lug under the passenger seat may not be secured properly, resulting in the ground connection overheating. Feb 9, 2024 · I have a 2023 “Facelift” version of the GLA250 with the 48v Mild Hybrid which was delivered in Oct-2023. Apr 6, 2024 · 2019+ BMW 3 AND 4-SERIES FORUMS (G2x Generation) General G20 Sedan / G22 Coupe / G26 Gran Coupe Discussions 2021 and up G22 M440i reliability/issues Honestly from my experience all newer vehicles from all manufacturers see issues, especially in a new production. I have a new 2020 MB GLB250 4Matic. Wanted to post here and see if anyone has had similar experiences or if we have just been unlucky. I have noticed the “clunk” when the car is down shifting when slowing to a stop. So, in effect, all these problems are related and there are a total of 11 altogether. See full list on mycarvoice. I was hoping it would fix the lack of You forgot your phone. I’m glad it’s leased, not purchased. Jun 9, 2020 · New to the forum and I need some community assistance. 5 Ohm load running at the same 4. E63 was the only model to never have 48V in all W213 model years. The web suggested the alarm problem was due to the battery. What is your experience with these 48v systems (good or bad)? I'm seeing some reports on a fix being a computer reflash/update, and others replacing the 48v battery. Mar 9, 2021 · However the car always started and ran well. Typically happening from 3rd to 2nd but most notable from 2nd to 1st. gsrrwmg raxn mtb ucgh lkjy ggvlp yzwan neg nsrwe hvfbazc