Date registered: Apr 2007
Vehicle: 1990 420SEL, 1979 450SEL, 1973 450SE, 2003 C320S, 2005 C230WZ, 2005 E320W Avantgarde
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I want to go on record by saying that I love SBC. I love it. I feel that Mercedes-Benz dealers failed to inform customers prior to purchasing or taking delivery of their vehicles the purpose and proper function of SBC.
Dear Mr. Customer,
Prior to purchasing this fine vehicle you should know that your Mercedes-Benz is equipped with a state of the art braking system not available on any other make of car for any price in the world. This braking system is available only on our very most technically advanced vehicles. These vehicles include you new E-Class, the McLaren Mercedes, the SL Roadster, The CLS, and the Maybach.
Here are some helpful hints you should know.
1. SBC does not operate like a normal hydraulic brake system.
2. SBC has a brake pedal travel MUCH shorter than normal brakes.
3. SBC has a brake pedal effort that is CONSTANT over the short pedal travel.
4. SBC has a sophisticated pump which you will hear, and feel operating. This is normal.
5. SBC has several new icons that may display in the dash alerting you to various abnormalities that may occur in the system.
a. brake overtemp
b. reduced braking power drive to workshop
Your SBC System under normal circumstances has no mechanical linkage between the brake pedal, and the brake master cylinder of the vehicle. This is called a brake by wire system. Your brake pedal is actually attached to a simulator that provides a degree of braking effort. The electronic signal sent by the position of the pedal is then distributed to the brakes at an instantaneous speed, and then the braking energy is produced by the vehicle and distributed to the wheels.
Here are the benefits.
1.You will not feel any ABS brake vibration since that is a hydraulic function.
2. Brake pedal effort is consistent and compensates for any brake fade.
3. You do not need to push the brake pedal very far to stop your vehicle.
4. You do not need to push the brake pedal very hard to stop the vehicle.
5. Braking power is distributed to each wheel with proportion to steering angle.
These are just a few of the many benefits of your new system. Here are some tips on how to become accustomed to the new system.
1. The brakes may feel grabby at first. Use a light and consistent pedal pressure. The vehicle will stop the based on your pedal pressure input, so the system automatically relieves pressure to stop smoothly with your constant pedal pressure.
2. The pressure you put on the pedal determines the rate of deceleration. The system will stop smoothly based on this pressure.
3. Even a very slight pressure will begin to stop the vehicle, so low speed stopping is very easy.
4. The slight pressure will begin to stop the car, even at very high speeds.
5. The only vibration you will feel through the pedal is the SBC pump. This may come on at initial pedal application, or after the pedal is released.
So if Mercedes did something like this to really show people the proper use, benefit and sophistication of the SBC system, I feel it may instead be loved by most.
Last edited by BARW126420SEL; 04-21-2007 at 03:42 PM.