Electrical System Problems of Mercedes Benz SL55

The bcm in the sl class (mercedes chassis code r230) fails very often. It catches fire and burns down vehicles in many instances. Mercedes is not selling a replacement part because they want to save money. This vehicle has an electronic assisted braking system!!! the bcm balances battery loads in the vehicle. When it fails it can make any electronic system in the car malfunction or simply not work. This could be as simple as the car not starting or as severe as it burning down your entire home. I would be okay if they simply sold a replacement part but they do not forcing all owners of this vehicle to drive it despite the condition of that battery module. All I’m asking is for a part to be made. No one has managed to make a replacement or refurbished part but mercedes who turned their backs on us. They were refurbishing the parts but stopped for some unknown reason. This is dangerous for all owners of the mercedes sl chassis code r230. Please help you’re the only ones that can.

See all problems of the 2005 Mercedes Benz SL55 🔎.

It appears the bcm (battery control module) caught fire and burned a significant portion of the trunk and associated wiring.

See all problems of the 2003 Mercedes Benz SL55 🔎.

The battery control module (known as the bcm or bns) failed, triggering a fire. The incident occurred while the vehicle was parked in a garage and had not been operated for several weeks. The fire consumed the module, insulation on wiring connected to and close to the module, part of the trunk lining material, and burned through a total of five hydraulic lines (retractable roof hydraulics). It appears that the trunk seal limited air to the point that the fire was self extinguished. This is the only thing that saved the attached garage and house. The vehicle valued at $30,000 was determined to be a total loss due to the extensive repairs required to restore it to an operating condition. I have since joined a facebook group "mercedes bns/bcm fires" that has nearly 1000 members and found that this is a common issue with the mercedes r230 model and fires have occurred dozens if not hundreds of times. We have determined that the module has undergone numerous changes, but there is no confirmation that any are safe. Mercedes refuses to provide guidance or solutions to this issue and apparently has no regard for the safety of current owners. I have retained the failed module, wiring, hydraulic lines, and burned portion of the trunk lining. It is available for inspection or analysis. I am a mechanical engineer with over 35 years experience in the automotive and industrial areas.

The contact owns a 2007 Mercedes Benz Sl55. The contact stated that the safety restraint system light illuminated constantly while the vehicle was on. The vehicle was taken to the dealer on many occasions but could not duplicate the failure. The vehicle was not repaired. The manufacturer was notified who informed the contact to take the vehicle back to the dealer. The failure mileage was 31,200.

See all problems of the 2007 Mercedes Benz SL55 🔎.