2025 Mercedes-Benz E350 problems

Filed Oct 30, 2026 · Electrical · TX

On October 16, 2026, all three dashboard displays in my 2025 Mercedes-Benz E350 suddenly stopped functioning while I was driving. This resulted in the loss of critical driver information and created a significant safety concern. I brought the vehicle to an authorized Mercedes-Benz dealership for diagnosis. The dealership confirmed that all displays were completely blank and that multiple electronic control units were unable to communicate. The technician reported that disconnecting the mobile phone control unit connector restored operation of the displays. The dealership also identified corrosion and apparent liquid contamination at electrical connectors beneath the center console, including an SRS-related connector. Diagnostic fault codes documented communication failures, electrical short circuits, and faults involving the airbag and pedestrian protection systems. The dealership attributed the damage to liquid intrusion or spillage and denied warranty coverage. However, I have never spilled a beverage or any other liquid inside this vehicle. The dealership has not provided evidence establishing the source of the contamination or how liquid reached these critical electrical components. I am concerned that the placement or protection of sensitive electrical wiring beneath the center console may allow moisture intrusion to compromise multiple vehicle safety and electronic systems. The dealership estimates approximately $17,000 in repairs, including replacement of the body wiring harness, and has indicated that additional repairs may be necessary. The vehicle has been inspected by the dealership, and the affected components are available for further inspection. The underlying cause of the contamination remains undetermined. I am requesting that the federal safety agency investigate whether this vehicle has a potential electrical system design or component protection defect that could result in sudden loss of dashboard displays and impairment of safety-related systems.

Filed Jun 23, 2026 · Electrical, Visibility · CA

The digital instrument cluster and center infotainment display screen went completely black and blank while the vehicle was in motion. This immediate failure blinded the driver to critical safety telemetry, including the current vehicle speed, gear positioning, and active safety warning telltales, creating an immediate, severe crash hazard on the roadway.This symptom is identical to the failure condition detailed in active the federal safety agency Safety Recall Campaign 26V281000 for this exact model year. The vehicle is currently held at an authorized Mercedes-Benz dealership (Mercedes-Benz of West Covina) where technicians confirmed the physical screen and plug blackout but are actively refusing to execute the safety recall remedy without a $1,272.95 out-of-pocket consumer diagnostic fee, falsely claiming a localized cosmetic stain on a connection plug voids the manufacturer's obligation to repair a known, federally acknowledged factory software design defect.The vehicle remains unmodified, intact, and available for federal or corporate engineering inspection at the dealership location upon request. No warning lamps or symptoms appeared prior to the sudden screen blackout.

Filed Aug 7, 2025 · Engine · FL

Drove the car through a 6" puddle and the engine was hydro locked, alternator and starter died leaving me stranded in the middle of the road. This car is in Florida and I would expect it to be able to go through a puddle. When getting the engine replaced I was told that my E350 was not the only one with this issue.