Mercedes 48v issues forum. I selected the Car AGM option and waited.
Mercedes 48v issues forum Feb 20, 2022 · I'm looking into a GLS and notice there are some reliability issues with the 48v mild hybrid system. Then it sat in my garage for about three weeks (I was out of town). Dec 24, 2021 · A second defect has been alleged relating to Mercedes-Benz vehicles with 48V/12V battery hybrid systems. If you aren’t considering buying the GLS, the good news is that the GLS is among the Mercedes models you can lease. I have about 4500km on it so far and have many of the same issues you have raised. Dec 5, 2021 · 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. Each time engine light comes on, Benz dealer cites different issues. Is this common? Aug 20, 2024 · Once the 48v battery reaches +/- 18v, it will be disabled by the Battery Management System (BMS). 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. Oct 19, 2023 · Electrical System:12V/24V/48V Battery Summary: Mercedes-benz ag (mbag), the manufacturer of mercedes-benz vehicles, has determined that on certain my 2022 sl (232 platform) vehicles, after a longer nonoperational time of greater than 42 days or with a battery charge of less than 45%, the following battery fault message might display in the Aug 13, 2024 · Here are some key points about the 48V battery system in Mercedes: 1. This could potentially mask other issues. 930 It has the 48V Hybrid system with ISG and the e-booster electric turbocharger Car came in because of flood damage - cleaned out everything - and replaced some relays, can connectors and other modules etc that were faulty Was able to start the car and it ran and drove - but the bottom end power was low - diagnosed this problem Mar 8, 2012 · Threads in Forum: Mercedes S Class. Tested, fully working, shipping now. My thoughts were that the 48V MHEV cars had been in service long enough and covered enough mileage for major gremlins to surface so the E53 got my vote. Mercedes Support are obviously not the route you should be following! Dec 30, 2019 · Update. Disconnect 12V battery more than 10 minutes for hard reset 48V system 01-28-2020 6:45 PM RUTHERE May 7, 2015 · The 68 plate C200 AMG I am buying has EQ Boost. They had my car for 5 days, sanded our the pain and reattached it all then said it was fine. Fingers crossed it’s nothing major! Sep 23, 2019 · According to Mercedes this is normal, no problem found. May 13, 2020 · Your car is the same age as mine. that similar issues Mar 23, 2020 · BenzWorld. 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 November", and then, when I picked up the loaner, "3,4 I find it hard to accept. The battery is getting old and will not hold the same voltage as when new. I need help fixing a 95M01 dump from a Mercedes 48V battery (LIB) after crashing and discharging. April 1, 2024 — About 134,000 Mercedes-Benz vehicles are recalled because the 48-volt ground connections Sep 11, 2006 · Mercedes AMG SL600 SPORT (Rare:Aquamarine blue) 6. BenzWorld. Apr 14, 2022 · Mercedes said it was a manufacturing problem to do with the grounding of the 48V battery in the enginethat there was 'paint' in the way and it wasn't ground properly. 48v battery is main power source for starting/stopping your engine at stop lights, etc. I selected the Car AGM option and waited. 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. K. Implement effective strategies to prevent battery drain, such as regular maintenance of the electrical system. Feb 18, 2024 · I’ve just gone through the same dilemma either buy a E43 (conventional ICE) or a E53 MHEV with a 48V ISG system. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! 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. Jan 17, 2023 · - Rodney Birmingham, Alabama (USA) - Current: 2011 SL550, Former: 2011 C300, 2010 ML350, CLK550 Cabriolet, 2002 C240, 2001 ML320, 1984 300TD Checkout the MBZ glossary: Diagnostic Tool Terms and General Glossary Pre-facelift E450 was the only variant that didn't get 48V mild hybrid in 2019/2020. I have a 21 GLE and the 48v died today. It has a relay that turns off the battery when the voltage drops. A battery charger may allow a float charge which will temporarily let the Stop/Start system become available again but will decay very quickly to a level that the engine management system decides the function cannot be made available. ? 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. After a week, I had to call but glad VM from dealer indicates waiting on MB /HQ to “approve this Warranty” issue w/48V battery issues. There have been some issues with the 48v battery but I think the prevalence is overweighted on forums. The most recent of which is receiving the 48V Battery Malfunction message and my Check Engine light went on. Go Back: Problems for all Mercedes models. Jun 3, 2023 · Maybe it is connected to online services, alarm system, 360 degree feature or whatever. She bought the Tesla with expecting to sell the Mercedes after she got comfortable with charging a car, but its been sitting most of the last 2 years, because she forgets to plug the car in often Jun 25, 2022 · BenzWorld. Sep 16, 2024 · Get on to either your Mercedes Dealer or the nearest Mercedes Service Centre, or Mercedes Benz Mobilo roadside assistance on 00800 1777 7777. Been severely disappointed with Mercedes USA Corporate, Park Place Mercedes in Dallas & Autobohn Mercedes in Grapevine. This sounds like it could be related to a battery failure. Jun 9, 2020 · BenzWorld. This happens after 24 hours and a long drive. It wouldn't go into neutral and the tow tuck had to use a dolly to move the car. I have a 2020 GLE 450 4MATIC I purchased back in August 2023. org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. . Bought a new 2024 CLE300 Convertible on Nov 2, 2024 and drove it 7 days when the 48 Volt system experienced issues. Dec 24, 2021 · A second defect has been alleged relating to Mercedes-Benz vehicles with 48V/12V battery hybrid systems. So I drove it. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! Hello dear experts. Dec 7, 2024 · CLE Class Coupe (C236) & Cabrio (A236) - New 2024 CLE300 Convertible - Hi. The web suggested the alarm problem was due to the battery. My name is Joe. However, issues with the hybrid battery can arise, leading to malfunctions and other problems. Sep 14, 2023 · Put 3000 miles on it with no problems whatsoever. revdarkwing on Oct 6, 2023. Typically happening from 3rd to 2nd but most notable from 2nd to 1st. They quietly released an official recall in February which was a software update that seems to have solved the issue. The display built up to Stage 3 then appeared to stall. If you know the car is going to sit for ”extended periods of non-operation” (Mercedes manual) you should turn on the “standby mode” found in the multimedia system under settings>vehicle>open/close. Also, I see that a 12v charger might charge 48v through a converter, but no Looking at a 2022 E53 AMG that seems like a very good deal. Oct 23, 2023 · It is Mercedes’ flagship electric car and regardless of its few faults, like its cramped rear space, this vehicle may remain a much-coveted ride for the next years to come. Feb 19, 2024 · Several thousand Mercedes-Benz E-Class, CLS, and AMG GT 4-Door models in the United States need to be fixed due to a fire risk resulting from a poor 48-volt ground connection. All other models got 48V in 2019 (still pre-facelift). Fingers crossed it’s nothing major! Dec 24, 2021 · A second defect has been alleged relating to Mercedes-Benz vehicles with 48V/12V battery hybrid systems. Has anyone else had problems like this? Aug 7, 2021 · (08-08-2021, 12:35 AM) A2ua Wrote: charge with terminals under bonnet as usual with 12V charger. The BMS cannot be reset or reprogrammed with conventional scan tools. E63 was the only model to never have 48V in all W213 model years. Don’t see many threads on here with 48v issues that I can recall. 110 being sold throughout the U. Mar 30, 2024 · Follow troubleshooting steps to diagnose battery drain problems and address common electrical issues. Therefore, introducing outside coding could cause issues in the long-term. 12v is still fairly important , even for starting the engine. Fingers crossed it’s nothing major! The light goes on randomly while I’m driving. the diagnostic code was sent over to Mercedes for analysis, we got feedback that a software update was required. ) The very big issue is the engines head bolt issue. Confirm all 48v components can be actuated via Xentry guided tests 4. Dec 2, 2022 · Have brand new 2023 S500 Executive Series. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! Mar 9, 2021 · However the car always started and ran well. However, the car shows no history of the Check Engine light going on at all. And the 48V battery system has been problematic for some folks. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! Apr 14, 2023 · The reset is a simple process, which Mercedes should include in the information when you pick up the car from the dealer. Understanding Mercedes Benz 48V Hybrid Battery The 48V electrical system in Mercedes Benz vehicles eliminates the need for drivetrain batteries, making the car safer by minimizing the risk of excessive electrical flow. I do repair those batteries for customers by just opening up, digging into the circuit boards, and refreshing some EEPROM files. Confirm completed guided test(s) for every fault code--not just 48v 5. Vintage Mercedes-Benz Owner Registry; General Discussion of Mercedes-Benz Classics; Classic Mercedes DIY tips and hints; Other Cars; Technical & Vehicle Assistance Forums. I'm looking into a GLS and notice there are some reliability issues with the 48v mild hybrid system. I brought it back to the dealer multiple times and they say it’s software update issues. Jul 15, 2022 · I have a 21 GLE and the 48v died today. My 2020 e53 had a 48v batt issue. 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. Nov 6, 2023 · Wonder if it’s related to the starter/alternator? On your car you have a 48v starter that also charges the battery, belt driven. don't know where to start. However, my dealer did let slip that I’m not the only one. What happens next in the world of mild hybrids is impossible to tell, but automakers such as Mercedes-Benz and Mercedes-AMG are using them to dramatically boost performance in vehicles with Repairing the 48v battery on this Mercedes 48v Mild Hybrid so the vehicle can be started and driven once again!💬 Message☎️ 01709 257 357🌐 www. Inspect Physical layers (grounds, DC/DC to 48v battery connector, etc) 3. Less than 3 months and a few thousand miles later I had the exact same problem. A new battery was shipped from Mercedes. Jan 5, 2021 · 4 months and 3,000 miles into my 2021 GLE53 AMG. Appears MB has zero idea how to deal with it. She has a 2022 Tesla Model Y w/11k miles that she bought after all her co-workers bought one and peer pressured her into buying one and 2017 Mercedes GLC 300 w/37k miles. 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 Apr 5, 2021 · (04-06-2021, 02:44 PM) deimonk Wrote: Replacing the 48v battery will solve the problem. However, upon further research it seems that this model along with several others can have major problems with the 48V battery dying. This is Mercedes' new "hybrid" design, supposed to be more fuel efficient. org Forums Oct 29, 2022 · Managed to get home without any further issues. Jul 31, 2023 · NHTSA Looks Into Alleged 48V System Defect Affecting the 2023 Mercedes-Benz GLC 300 Whatever the problem may be, it also results in the inability to start the vehicle. Mar 7, 2022 · Here is the tutorial on repairing the Mercedes Benz 48 volt mild hybrid battery using CG100 Prog III or CG100X programmer. Mar 26, 2023 · Hello everyone I have a problem with gle300d mild hybrid I need to unlock 48V battery eprom Car not starting after accident with a red notification on board and showing dtc (B183387) Tks MHH Auto ™ Guest Jun 10, 2024 · My girlfriend has 2 vehicles. The shop says it needs a rear ABS speed sensor, and also the wiring harness to that is bad. Who can help with this problem? What is needed for this? Feb 22, 2023 · Hello I have w223 the car starts for 3-4 seconds and stops, and 48v battery voltage keeps dropping and after charging comes up so i dont think its 48v battery problem. 1. I have looked at what this is and am pleased with that but, has anyone had any problems with their EQ Boost ? Apr 1, 2024 · Mercedes-Benz recalls 134,000 GLE-Class and GLS-Class vehicles over a risk of fires. I found a lawsuit about it from about a year ago in New Jersey but it seems that hasn't been resolved. 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. 2. It might interest you to know that the Mercedes-Benz EQS is among the electric cars with extra high ceilings. Jan 11, 2024 · Hello. Looking at a 2022 E53 AMG that seems like a very good deal. My wife's C class does this sometimes, the hard peddle indicates a loss of vacuum to the brake booster, the hard peddle then doesn't let the brake peddle depress enough to push the brake light switch which keeps the starter from engaging. Car still under Mercedes 3 year warranty. To reset the car's battery memory, use the smart key and - Lock and Unlock the car three times, wait 15 minutes, and try starting the car. 361) Engine: 256. In 2020, with the facelift, MB switched the 450 to the M256 and introduced 48V with that too. co. The car started with no indication that there had been a problem. The defect causes vehicles to shutoff, overheat, go into limp home mode, or lose acceleration at highway speeds. I googled "2008 GL450 ABS sensor issue", and learned that they had a problem with the wiring harnesses for those in particular (kinda like the MBZ engine wiring harnesses issue 1993-1996) The people at the factory making these harnesses for the ABS sensors assembled the wire ties so tightly that 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. Jan 10, 2024 10:11 AM by DiamonDon. It powers an integrated starter-generator (ISG) or a belt-driven starter-generator (BSG), which assists the internal combustion engine (ICE) during Oct 23, 2023 · What Is the Resale Value of the Mercedes-Benz GLS? According to Caredge, the Mercedes-Benz GLS-Class has a depreciation value of 62% after 5 years and a resale value of $44,047 after a 5-year period. Day 2… Engine light, electronics issues. I have had a number of computer related issues. 2001 S500 serious electrical issues. 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. 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. Dec 5, 2023 · Looking at a 2022 E53 AMG that seems like a very good deal. Hear it is…$4,000. A low battery can cause all kinds of problems. 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. Dec 5, 2023 · Re: Mercedes Benz 48V MHEV BSG - Help needed Post by threeReefs » Tue May 14, 2024 9:33 pm As a quick update on this, I have come to the conclusion that trying to make this work the "proper" way - creating a boost function or using the inbuilt one - will be too complex and probably not work. Car had been switched off for approx 9 hrs before starting when the message came up. Purpose of the 48V Battery: Mild-Hybrid System: The 48V battery is primarily used in Mercedes’ mild-hybrid vehicles. does not strike me as a big problem considering how many cars have this system. Many people have had to have multiple battery replacements due to repeated failures. I have noticed the “clunk” when the car is down shifting when slowing to a stop. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! Jul 31, 2023 · I’m a big fan of IL6 engines so I’d really like the E53 the only thing holding me back is the added complexity of the starter generator 48V hybrid system, if it proves reliable (introduced in 2019) I’ll probably bite the bullet and buy one next year unless a really well looked after E43 turns up (only made 2017-18) 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. airbagteam. My local Mercedes service manager tells me the Mercedes "fix" is to take a "sunday drive", or use a trickle charger. org forum is May 7, 2024 · I've had the same commute for over 30 years, and owned Chevy, Ford, BWM, and have never experienced this issue. 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 Mercedes S-Class W222 S450/S550, Mercedes CLS-Class C257 CLS450/CLS53, X290 AMG GT43/GT53, Mercedes GLE-Class V167 GLE450/GLE53, Mercedes E-Class W213 E53 Mercedes M256 Problems and Reliability The M256 engines are still new and do not have enough statistics on common problems and failures. Contact now to look a Dec 6, 2023 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Sep 13, 2022 · Hi all I'm working on a 2020 W167 GLE AMG (167. Mercedes 48V lithium battery locked up after accident. The dealer said the 48v went bad. The car would not unlock with the app or the key fob and when I manually use the key to open it, the mirrors and some of the electrical still would not work. The car simply bricked. If you program the car to stay in eco-pro mode, the engine will “sail” and shut off even when the car is moving while you’re not accelerating. Recognize the role of the 48V battery in Mercedes-Benz vehicles and how a faulty 48V battery can contribute to battery drain. MB is having massive issues with the 48V lithium batteries for their mild-hybrid systems. Solved the problem by replacing main board. Apparently I was wrong. Technical Assistance Vendor Classifieds; Mercedes Tech Talk; Wheels, Tires, Suspension & Brakes Forum; Audio & Electronics; Performance Upgrades & Tuning; Detailing Feb 9, 2024 · I have a 2023 “Facelift” version of the GLA250 with the 48v Mild Hybrid which was delivered in Oct-2023. Sep 25, 2017 · The 'hard' peddle is a clue. Anybody has faced similar issue or problem? If i hold accelerator pedal and start car it runs then 5-10 seconds but rpm is very low looks like force start engine. M156 head bolt problems - Page 16 - MBWorld. Mercedes' handling of the situation is disappointing, as the instrument panel function, designed to alert about car problems, loses its purpose when the check engine light remains on continuously. Kind Regards, Hugh May 16, 2024 · A forum community dedicated to Mercedes GLE owners and enthusiasts. Wouldn't mind going in armed with at least some information. These cars should be recalled, but Mercedes seems to be taking a workaround. 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. May 21, 2022 · Hi I'm at the point of completing a purchase of VCDS but I need to know whether it has the capability to de-energise the 48V MHEV system on 2018 and up A6/7 Q7/8 vehicles? I have an out of warranty A7 sportback with a dead Belt Starter Generator to repair. 0-Litre–V12-48v-Quad Cam Engine, AMG Exhaust, Xenon Headlights, Panoramic Glass Roof. It's on current recall but this is after I had to replace mine on a 2yo GLS450 in March for $5k. Feb 2, 2014 · E63 AMG Things I would look for with this car. Have spoken to mercedes and all they can advise is to bring the vehicle in and want it all day. Save Share Reply Quote Like Dec 16, 2024 · The 48V system, which I initially disliked but now appreciate, seems to stabilize and reduce engine stress. 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. dgvgonvpwrwicuovkurkkcuhedhplvzmrnefklvvcufrgse
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