2021 Mercedes-Benz Sprinter 2500 15 Passenger

These are unverified consumer reports filed with NHTSA, shown as submitted.

• 12/16/2023· FORWARD COLLISION AVOIDANCE,LANE DEPARTURE

  since I am chemically sensitive and they had sprayed so much cleaner in this vehicle that when my husband got it home he took vinegar and cleaned it out many times and then he took it to someone to have them do the floor over so the plastic smell wouldn't stink so bad for me. It had to be there for a couple weeks or this I'm sure would have showed up much sooner. At one time our vehicle would not accelerate enough to pass or pull out safely from a stop sign but that seems to have gotten fixed but it continues to have the cruise control go off at the same time warning lights come on that says no brake assist no Lane keeping assist no distance. We have had it in the shop four times one time they had us replace the battery which really didn't need replaced and the things came back up again. It's a very frustrating vehicle and this happened within 30 days of us buying it. They gave us a limited 90 day warranty which they've been working on sporadically for months and keeping it for weeks at a time. We have spent a lot of time and money on this vehicle and it needs to be reported and something done about it as it's really really bad. It is an ongoing situation. Every time we take it in they either erase the warnings or somehow don't get it to act the same but it always happens with us within 200 miles of driving it. It's a constant thing on and off.

• 11/25/2024· VISIBILITY

  Purchased CPO certified Mercedes-Benz 2021 Sprinter Rv Van that was sold to me by Mercedes-Benz of S. Orlando Florida with illegal window and windshield tint and when I complained they stated it’s buyer’s responsibility to pay for removing once it’s sold. It’s a safety hazard as it was extremely difficult to see at night. Police pulled us over for it, but kindly told us to remove it for our safety. The same answer was stated for the significant rust on the roof as buyer had opportunity to view before purchase…..not typical to climb up the roof for seniors. Seems to be a pattern of sales practices that’s deceptive, passing the cost to buyers, rather than to have it corrected before CPO certification.

• 11/17/2022· PARKING BRAKE,POWER TRAIN

  The contact stated their company owns a 2021 Mercedes-Benz Sprinter 2500. The contact stated that the gear shifter was shifted into park(P) and the parking brake erroneously activated; however, the vehicle rolled forward as if the gear shifter was in drive(D). The contact depressed the brake pedal and made several attempts to put the vehicle in park(P). There were no warning lights illuminated. The contact was not sure if the vehicle had been taken to the dealer to be diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was unknown.

• 11/12/2023· FORWARD COLLISION AVOIDANCE

  Adaptive brake assist slammed on the brakes without warning at 20-30mph while crossing railroad tracks bringing the van to a complete stop and putting it into park with the parking brake engaged while on the tracks. No object or vehicle was in the path of the van or anywhere nearby. Cargo slid forward in the van and some things being transported were damaged. This is at least the 4th time this vehicle has done this without a reason to, but this time was the only while at speed and moving forward. They have usually occurred because of a shadow on the ground or change of road surface while backing up. Warning beeps also happen when passing under overpasses on the highway and it appears to momentarily consider braking because of the shadow. At 70mph. Taking to the dealer to try and assess, but this appears to be a known problem according to online Sprinter forums and related to software. Incredibly dangerous.

• 11/10/2024· STRUCTURE,UNKNOWN OR OTHER

  We purchased a 2021 mb sprinter Van, modified up fitted as a RV with 15842 miles from MBSO Orlando on June 26th 2024. In Idaho on the freeway we were pulled over for illegal tint and while we were not ticketed after reviewing the purchase agreement. He warned us to be careful driving especially at night as it was could be very hard to see and it was certified. It harder to see for me as I have some degree of stigmatization with my eye sight as I am [XXX] which is to be expected. After arriving back in Seattle area where we live and found significant rust on the roof of the van and given an estimate for $16500 by certified mb body shop, I emailed the service manager about the rust and illegal tint that was not disclosed, he basically dismissed it…..stating that I had opportunity to view it and it’s buyer responsibility once it’s sold. The failed to respond adequately as to why they certified CPO the 2021 Van, which was misleading to consumers. This is a serious breach of trust for we were expecting a van had passed safety and structural inspection thoroughly by a brand name known for quality and integrity. Now I am faced with additional expenses which we are unable to bear. Please help us as we relied on CPO inspections to avoid unnecessary expenses on our limited income and now we are trapped in a situation we did not expect. Regards, [XXX] [XXX] [XXX] PS. Dark illegal tint and rust on van after a little over 2 months. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

• 10/26/2022· VEHICLE SPEED CONTROL,FORWARD COLLISION AVOIDANCE

  When driving in a low-density area, on roads with little to no traffic, the vehicle assumes that the radar has failed if it does not see a vehicle in front of it for a long enough time. Since this is a larger van, I tend to drive 65mph on higher speed roads such as an interstate. Many cars understandably pass me as the speed limit is usually much higher. Even though they pass me the van does not register that car on the radar in regard to its failure state. When the radar "detects" that it's failed (which it has not) it disables the adaptive cruise control, emergency braking, and in general any speed control. This is a very drastic measure for a device that has not actually failed. Again, all cruise/ speed control functionality is disabled, and the vehicle must be driven with the peddle while the radar is in a "failure" state. To restore functionality, I have to tailgate another car, if there is one around, for 5 to 10 miles. Once the radar is happy with seeing enough return signals it will re-engage the adaptive cruise control and emergency braking. If there are no other vehicles around for the next hour the process repeats. Attached are photos that should also be geo-marked, along with a screenshot showing the progression of the photos on a map.

• 10/22/2021· SEAT BELTS

  The contact owns a 2021 Mercedes-Benz Sprinter 2500. The contact received notification of NHTSA Campaign Number: 21V513000 (Seat Belts) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The local dealer and the manufacturer were made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

• 10/19/2021· LANE DEPARTURE,FORWARD COLLISION AVOIDANCE

  My 2021 Mercedes Benz Sprinter van came equipped with Lane Keeping Assistance and Automatic Braking features that are on by default every time the engine is started. There is no way for an owner or a Mercedes Benz technician to have the safety feature set to remain off until the driver chooses to engage the features. I believe this is a safety hazard, as we experienced 2 incidents on a recent trip. 1. Lane Keeping Assistance took over the vehicle without warning from a slight wind gust, and almost caused us to get in an accident. We were traveling at 60+ mph on an interstate highway, and without warning, the van started to move from side to side and was difficult to gain control of the van. The MB Lane Departure Assistance was automatically braking different wheels of the van at different times to force the van to stay in the lane, but we never went out of the lane in the first place. If there was a car next to us, our 2021 MB van would have caused a severe accident. 2. Automatic Emergency Braking was engaged when the system thought a shadow from a light pole was an object in the road. We were traveling at 20 mph in a town center on a sunny morning, and the braking happened for no reason. We then saw the shadows. We would like Mercedes Benz to allow owners to turn off safety features, and have them remain off by default.

• 10/18/2025· STRUCTURE

  Sprinter hood came unlatched and flew up smashing the windshield. Luckily we were able to pull over safely.

• 10/15/2025· UNKNOWN OR OTHER

  While driving in the freeway, the crosswind assist feature over-engaged and skewed the vehicle dangerously while also drastically slowing the vehicle and causing a hazardous near collision with the following vehicle. The system is way too aggressive and cannot be turned off or desensitized.

• 10/06/2025· ELECTRICAL SYSTEM,LANE DEPARTURE

  I had the same issues as identified in a current recall entitled: Model 907 Sprinter. Model Year 2019-2022 Update Instrument Cluster Software. In my case the instrument cluster remained non-functional upon vehicle start-up exactly like the recall with an added problem of the ignition push button would not shut off the vehicle. I was left with a vehicle I could not shut off without an operational instrument cluster. While my model year and model number match this recall, for some reason my VIN number was not included in the recall so the dealer will not upgrade the software and fix this problem. The scope of this recall must be corrected to include my VIN number.

• 09/21/2022· POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM

  I have had several occurrences of a stuttering and/or lagging acceleration when stepping on the accelerator.

• 09/19/2023· SERVICE BRAKES

  The car is in a warranty. I was to The Mercedes (Rockin California)service and they said Break front pads needs to replace 16,000 miles.I did service replace the front pads,and after that I had a lot a pulsing on the break pedal.I was back to Mercedes service(Rockin California ) to explain what happened with my brakes,and they said ‘’you need to replace the rotors disk and the new pads.I refused that.I was at second opinion to another mechanic and he said is issue about hydraulic problem,And safety.Another thing they did tire rotation (I do Not approval to do tires rotation ). I m scare about my safety driving. I need help to fix my car because I m using this car for my business in construction. Thank you .

• 09/19/2022· POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM

  At altitudes of over 5,000’ MSL the vehicle will not move when shifted into Drive or Reverse. No response from gas pedal. Vehicle will randomly hesitate with zero or poor throttle response when driving creating an extreme safety hazard.

• 09/09/2024· STRUCTURE

  The side door will not open. Either the cable part of the mechanism gets stretched or the rubber tensioners need adjustment or the plastic cable hub becomes detached to the point where neither the interior passengers or someone outside can let the passengers out. Videos discussing this issue have over 29,000 views and there are numerous posts on forums looking for answers. Regardless of cause, when passengers can not get out, it is a safety issue.

• 08/26/2025· POWER TRAIN,SERVICE BRAKES

  CRITICAL SAFETY CONCERN: Vehicle shifts into NEUTRAL during normal start sequence, could roll over passengers. Component of concern: Electronic "Wiper" stalk shifter is easily shifted into NEUTRAL during normal start sequence. Problem encountered several times in our 2021 Mercedes Sprinter- the stalk shifter is located directly in front of the "START/STOP" ignition button. To start the vehicle, you must: 1) Press and hold the brake 2) Reach under the shifter and press the "START/STOP" button The problem is pressing the brake is also the "safety interlock" for shifting out of PARK. The breakout force on the shifter stalk is VERY LOW, causing it to be inadvertently shifted into NEUTRAL during a normal start sequence. This is a safety concern, because often we will start the vehicle, and then exit the drivers seat to load passengers (small children and/or wheelchair users). The vehicle does not give any indication (no physical movement of the shifter) of shifting out of park- other than white letter on mid-dash indicator going from "P" to "N". The vehicle could easily be shifted into NEUTRAL and run over passengers during the loading operations.

• 08/23/2021· LANE DEPARTURE

  The contact owns a 2021 Mercedes-Benz Sprinter 2500. The contact stated while driving on the highway at 65 MPH, there was construction that had directed traffic to the right side of the road. The contact stated that while driving past the construction site, the active lane departure assist warning light illuminated on the instrument panel which caused the steering wheel to shake and the brakes to lock-up. The vehicle independently began to steer out of the lane and into another lane which almost caused a crash. The contact had to use excessive force to keep the vehicle from hitting the other vehicle. The contact stated that the failure occurred 3 times after the initial failure on the same day caused by Active Lane Keep Assist program, while driving under similar conditions. The contact then decided to turn off the active lane departure assist feature to avoid any further potential failures. The dealer nor the manufacturer had yet to be notified of the failure. The vehicle had yet to be repaired. The failure mileage was approximately 400.

• 08/18/2023· ELECTRICAL SYSTEM

  The contact owns a 2021 Mercedes-Benz Sprinter 2500. The contact stated that while the vehicle was parked and the seat turned backwards, the contact observed exposed wires that were indented. The vehicle was taken to a dealer where it was diagnosed and determined that the wiring harness needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 200.

• 08/16/2021· ELECTRICAL SYSTEM,BACK OVER PREVENTION

  The contact owns a 2021 Mercedes-Benz Sprinter 2500. The contact received notification of NHTSA Campaign Number: 21V411000 (Electrical System, Back Over Prevention) however, the part to the recall repair was unavailable. The contact took the vehicle to the local dealer and it was confirmed that the part was not available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

• 08/09/2021· SERVICE BRAKESCrash

  Delivery driver parked at top of customer's driveway. Driver placed van in park and engaged the ebrake. Driver went to rear of vehicle, retrieved customer's package, and exited the van. Driver was handing customer the package when the driver and customer heard clicking sounds coming from van. Van began sliding down the driveway and hit customer's trees. If trees had not been there, van would have hit the customer's house.

• 08/01/2025· ENGINE

  unknown

• 07/28/2024· SUSPENSION

  The Cross Wind Assist system when it activates, can be so violent it will almost throw the van into another lane. So far, we have been lucky to not overreact to the system and crash. It is VERY SCARY driving - especially wise open spaces like West Texas .

• 07/24/2024· VISIBILITY/WIPER

  The windshield wipers malfunction. The windshield wipers turn on when using the turn signals and do not turn off when switched off. The manufacturer suggests disconnecting the fuse - safety issue is they are distracting when on continuous. The problem started with wipers operating only when the turn signal was used, now the wipers operate continuously- will not turn off when the vehicle is on.

• 07/05/2025· LANE DEPARTURE,FORWARD COLLISION AVOIDANCE

  Brakes deployed and distance warning illuminated for a very brief instant at highway speed (70 mph) just when a vehicle traveling faster starts to overtake. Very scary! Luck to not have been hit on the right rear corner.

• 07/02/2023· FORWARD COLLISION AVOIDANCE

  Our Sprinter 2500 is equipped with Mercedes Benz autonomous cruise (Distronic Cruise). It fails repeatedly for unknown reason, and when it does it also disabled related safety features (collision warning, emergency braking) as well as standard cruise control. The manual suggests checking for bugs, snow, or other obstructions on sensors, but they’ve been clear. Forums note that their vans also cut out, theorizing that it happens because there aren’t any vehicles in front of the van for prolonged periods of time and the software thinks there is an error. They also note that Mercedes had not been helpful. The fact 1) it happens for unknown reasons, and 2) it disables essential safety systems is concerning and unacceptable.

• 06/22/2022· ELECTRICAL SYSTEM

  The contact owns a 2021 Mercedes-Benz Sprinter 2500. The contact stated while driving at an unknown speed, the air conditioning system failed to function properly. The contact pulled over and looked underneath the vehicle and noticed that the alternator belt and serpentine belts were not properly seated and were hanging down loosely. The vehicle continued to operate normally. The contact researched and became aware that the vehicle had experienced the failure listed in NHTSA Campaign Number: 20V474000 (Electrical System) however, neither the VIN nor vehicle type was included. The dealer was not contacted. The manufacturer was contacted and the contact was informed that the vehicle needed to be diagnosed. The failure mileage was 54,000.

• 06/17/2026· STEERING,EXTERIOR LIGHTING,VISIBILITY/WIPER

  2020 Mercedes-Benz Sprinter. When the right turn signal is activated and the steering wheel is turned right, the windshield wipers activate unexpectedly. Diagnostic codes B230015 and B230615 are stored, indicating windshield wiper switch and wipe/wash malfunction. Concern appears related to the steering column multifunction switch/module. This affects driver visibility and steering-column control functions during turning/signaling.

• 06/13/2024· UNKNOWN OR OTHER

  Smog test failed California smog test due to the OBD 02 sensor (exhaust engine sensor) not being ready. Despite our efforts, including driving over 1000 miles and following Mercedes recommended drive cycle steps repeatedly, the issue persists. So far, we have contacted the Mercedes dealer several times, been told to drive the van around and given the Mercedes drive cycle instructions, but to no avail. Additionally, a customer case has been opened with Mercedes-Benz North America, only to be directed back to the dealership, where the vehicle remains with the unresolved issue.

• 06/06/2025· SERVICE BRAKES,FORWARD COLLISION AVOIDANCE

  The ABS front wheel sensor became inoperable after 27K. This disables several onboard systems that assist in vehicle control, including blind spot detection, and collision warning systems. Looking at the sensor - it completely separated at the connector by the wheel hub. The surrounding area showed no signs of unusual trauma or deterioration.

• 05/29/2025· UNKNOWN OR OTHER,LANE DEPARTURE

  The crosswind assist system is unsafe, it make the vehicle unstable when activated. Since new I took to the dealership many times and it never was fixed. And the line assist system many times do not let me turn right because it not see a broken line painted on the road.

• 05/04/2021· EQUIPMENT

  2021 MERCEDES BENZ SPRINTER CARGO VAN. CONSUMER WRITES IN REGARD TO BLUETOOTH SYSTEM. *LD THE CONSUMER STATED THE FEATURE USED TO ANSWER A CELLPHONE VIA BLUETOOTH WAS A SAFETY HAZARD. *JS*DT

• 04/06/2026· EXTERIOR LIGHTING,STRUCTURE,SERVICE BRAKES

  I am a Amazon driver and my dsp makes us drive with very bad safety hazards on the vehicle the step up platform on the vehicle is broken brakes are terrible and the airbag sensors and tire pressure sensors are not working and very bad.

• 04/06/2022· ELECTRICAL SYSTEM,AIR BAGS,SEATS

  This vehicle has factory installed swivel seats. When we were parked, we swiveled the seats around to use the table and then back prior to driving again. When we tried to move the seat closer to the steering wheel, the electric seats did nothing and upon inspection, realized the fuse had blown for the power seats. We replace the fuse and drove a little ways and swiveled the seat again to test it and this time the seat binded up on something. Upon further inspection, we noted several bare wires caught up in the swivel mechanism underneath the driver side seat. When we tried to start the car again the windshield wipers were going off on their own , the airbag sensors were lit and nothing seem to be working quite right. The vehicle was shut off and again found several wires that were bare and were touching and found additional blown fuses. After investigating online to see if there was an open recall for this vehicle, we found that the 2019 2020 and 2021 sprinter vans had a very similar issue with the wiring under the swivel seat that caused airbag deployment. I have only had this vehicle for five days and it is now at the dealer. The dealer told me it could possibly be a six-month wait if they have to replace the vehicle wiring harness and we were informed by the 800MB number that there were no open recalls for this specific vehicle. I don’t understand how this could not be part of an open recall if it was previously reported in the 2019 2020 and 2021 models with swivel seats, and mine is a 2021.

• 04/05/2024· SEATS

  Tether strap bar for a car seat was only tack welded on and snapped off when I tried attaching the car seat straps.

• 04/04/2023· FUEL/PROPULSION SYSTEM

  At high altitudes and / or cold weather, the vehicle will not move at all until it runs for about 5 to 10 minutes. It starts and revs just fine in neutral, but once you put it into drive, the throttle completely stops responding. This is a well known issue that Mercedes has chosen to do nothing about. https://sprinter-source.com/forums/index.php?threads/111270/

• 04/01/2026· STEERING,ELECTRICAL SYSTEM,SERVICE BRAKESCrash

  Got in a serious accident due to the crosswind assist malfunctioning totalled car and got tickets for bad driving when it wasnt my fault the car took control and I couldn't halo what happended - they arrested me thinking i was drunk (dont drink) it was a nighmare help!!!! I have court 4/29 - this is very time senansative!

• 03/14/2023· POWER TRAIN,ENGINE

  Engine throttle does not respond to input from accelerator pedal.

• 03/05/2025· STEERING,UNKNOWN OR OTHER,LANE DEPARTURE

  My vehicle is activating “crosswind assist” and applying the brakes automatically, unilaterally, and abruptly while traveling at speeds over 40 mph on the highway, even when conditions are NOT windy. It seems that the sensor is overactive in detecting wind. I have taken it to the Mercedes dealer and they have stated they found no problems with the ESP sensors and state that the vehicle is responding to perceived wind conditions/instability normally and as it should. However, this was NOT like this for the first two years I drove the vehicle. It is DANGEROUS and not normal and the unilateral application of the brakes while I’m going 60 or 70 miles an hour on the highway forces my vehicle out of the lane and into parallel traffic lanes! The unilateral braking is sometimes so severe that my vehicle fishtails and feels like it is going to roll over into an adjacent lane or off the highway. This is going to cause a major accident to me and fellow drivers. Since the problem started six months ago and has steadily worsened, I have been advised to upgrade the suspension and install an “swaybar” and also to change the tires to make the vehicle more stable. I have done both. Neither has helped at all. I don’t know what to do or where to take it. It seems like deactivating the crosswind assist would be helpful in determining if the sensors are too sensitive or defective and whether it drives safely without them. But there is no way to deactivate that system. I have owned my vehicle for three years and for the first 2 1/2 years it drove perfectly, without this issue ever happening. My vehicle has not been in any collision and has had no damage, so I do not know where this came from. It seems like an electrical or sensor issue that has arised and neither a sprinter specialist mechanic nor the Mercedes-Benz dealership with a sprinter technician have been able to figure out what is wrong and how to fix it. This is URGENT and I need help or there will be a catastrophe.

• 03/03/2023· ENGINE

  Driving at an elevation of 6,200' the check engine light illuminated with code P012C "Turbocharger/Supercharger Inlet Pressure Sensor Circuit Low". Shortly after the van went into "limp home" mode with no turbocharger input. Minimal acceleration. Almost resulted in accident since I couldn't safely re-enter highway at speed.

• 02/15/2022· SERVICE BRAKES,FORWARD COLLISION AVOIDANCE

  Entire brake system (distance warning, active brake assist) malfunctions frequently without conditions that warrant. Brakes and steering impeded and distracts and startles driver. Problem confirmed by dealer without remedy. Dealer states no malfunction in system. Taken vehicle to dealer on four separate occasions. Dealer recalibrated and reset and called tech support at manufacturer and manufacturer said that is the way it is supposed to operate. The problems persist on every trip we take. Warning indicators began within 50 miles of my picking up the vehicle brand new from the dealer. System disables then resets itself at random times during driving. Dealership states they have no codes indicating fault in system.

• 02/08/2022· FORWARD COLLISION AVOIDANCE

  The contact owns a 2021 Mercedes-Benz Sprinter 2500. The contact stated that while driving at various speeds, the vehicle would inadvertently abruptly stop every 20 minutes. The contact stated that the Forward Collision-Avoidance Automatic: Dynamic Brake Support/Brake Assist warning light would illuminate prior to the failure. The contact disabled the brake assist; however, the failure recurred. The vehicle was taken to the local dealer to be diagnosed. The mechanic determined that the aftermarket tires had caused the sensors to become defective. The contact was also informed that the failure was a common issue. The contact was concerned because he was stranded out of town with a defective vehicle. The manufacturer was contacted and agreed to provide a loaner vehicle; however, the contact was concerned that the vehicle would be at the dealer being repaired for longer than the loaner vehicle would cover. The approximate failure mileage was 3,200.

• 02/02/2023· ELECTRICAL SYSTEM

  Error Message: "Service Required: Do Not Shift Gears, Visit Dealer" The 2021 Sprinter Van indeed would not shift gears and I was stranded. I was finally able to be towed two days later to a Mercedes Benz dealership. The technician noted corrosion in the EIS unit and replaced. It appears to be a known problem with Sprinter vans with bulletin from Mercedes[XXX] due to condensation getting into this vital area. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

• 01/22/2024· ELECTRICAL SYSTEM,AIR BAGS

  The contact owns a 2021 Mercedes-Benz Sprinter 2500. The contact stated that after repositioning the swiveling driver's seat, the seat became jammed. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 21V410000 (Electrical System, Air Bags) but the VIN was not included. The manufacturer was notified of the failure, and a case was opened. The failure mileage was 20,000.

• 01/19/2024· SEATS

  This sprinter van is a 2500 4x4 to exit or enter the vehicle you must use the step, this requires, you to twist sideways and reach down with your foot to the step. On the seat which is attached to the metal frame there is a plastic piece which holds the seat switch, which is held on by a plastic plug and a reusable plastic rivet. As you enter or exit the van and use the step your weight pushes the leather seat against the plastic which holds the seat switch and causes the attachments to fail causing you to fall. I Have fallen twice once into traffic.

• 01/06/2026· ELECTRICAL SYSTEM,EQUIPMENT,UNKNOWN OR OTHER

  Following Jayco and Entegra instructions, I delivered my coach to Blue Compass RV. It has now been more than SIX MONTHS out of service. Jayco Pre-Authorization has denied the required battery replacement and referred me to the battery manufacturer, even though Entegra bulletins and recall procedures identify and correct the conditions that caused the damage. Completed Recall and TSB Work Approved by Entegra and Jayco · 22-075 (TSB) A/C Electrical Connection Instructions, September 2022. Replaces WAGO connectors. · 22-076 (TSB) Firefly Terminator G4 Tap Connector, September 2022. Corrects communication errors within the lithium battery network. · 23-101 (TSB) Front Spotlight Electrical Update, April 2023, revised September 2023. Mitigates spotlight over current that can affect Firefly. Adds harness, relay, and software. · 23-120 (TSB) Renogy Inverter Settings, November 2023. Updates parameters; requires Battery Type = LF16 and custom set points. · 23-123 (TSB) Alternator Fuse Replacement, December 2023. Replaces 300 A MRBF with 200 A MRBF. Confirms alternator charging 30 to 100 A on Samkoon. · 24-015 (TSB) Renogy Battery Firmware Update, September 2024. Updates BMS to v137.4.5 to address alternator not charging the battery. Includes state-of-charge calibration. · 24V-160 / 2024-141 (Recall) Renogy Lithium Battery Firmware Update, May 2024, revised August 2024. Recall firmware to v137.4.4. Inspection identifies stuck contactors and requires battery replacement when found. Service bulletins 23-120, 23-123, and 24-015 show that the system ran with outdated inverter and alternator settings, an oversized alternator fuse, and battery firmware that interfered with proper charging. These factors accelerate cell imbalance and degradation. Only after Entegra-approved updates were applied did the full extent of battery degradation become evident. Replacing the battery earlier would have risked repeat failure.