Q: what dose it mean when your Mercedes Benz R class 350 is displaying restrained system malfunction and service E. exceeded 141 days

"Service E exceeded by 141 days" indicates your vehicle is overdue for s Service E. Check with your owner’s manual or dealership service department as to what is included in a Service E. Once you find out what is included in this service, you can request an estimate from yourmechanic.com to have the same service performed. You are not required to service the vehicle at the dealership so long as you follow the recommended services.

As for the "restraint system malfunction", this indicates a fault in the SRS - Supplemental Restraint System. This includes things such as airbags and seatbelt pre-tensioners. If the SRS warning light is on, there is a fault in the system. This should be looked at as soon as possible. With a fault stored in the system, the airbags or seatbelt pre-tensioners bay not function in the event of an accident. The SRS system relies on a number of sensors to signal the system to fire an airbag or airbags, as well as the seatbelt pre-tensioners, when an accident occurs. If any of these sensors are faulty, or even the SRS Control Module, or an airbag, are faulty, again, the SRS system may not deploy

You may need to see your dealership service department to look into the SRS system fault.