E-Class (W211) 2003-2009

2002 E320 SBC and brake error

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Old Jul 28, 2022 | 08:09 AM
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C43FIN's Avatar
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C43 AMG
2002 E320 SBC and brake error

Hi MB peeps,

My daily has started showing me these messages but i dont know what the issue could be. The SBC system and brakes seem to work fine even with the messages and codes. Ive changed the front pads, rotors and sensors and will be doing the back pads and sensors next week. I also know that the clock spring in the steering needs changing because its making a scraping noice. Any info is welcome.







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Old Jul 29, 2022 | 09:21 PM
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'99 and '05 E55 AMG
You are driving on borrowed time; CANBUS uses two wires to communicate, if one fails the other is a fail-safe. You are now driving on the fail-safe mode; if it also fails, you are driving a two-ton missile with effectively no brakes.

Take it to the dealer ASAP! Stop screwing around with it! If it is component A7/3 (SBC unit) it is covered by the extended 25-year warranty. If the failure is elsewhere, pay to repair it, or junk the car, or sell it to someone who can afford to repair it, or injure or kill yourself and/or others when the brakes fail.

You've been registered on this site for four years. Use the "Advanced Search" function in the upper right and read. SBC has been discussed over and over and over. CANBUS has been discussed multiple times. I've posted the technical documentation on the SBC system myself multiple times. I've posted the CANBUS technical documentation multiple times. Read and learn *before* your car breaks.
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Old Jul 30, 2022 | 01:05 AM
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Originally Posted by bbirdwell
You are driving on borrowed time; CANBUS uses two wires to communicate, if one fails the other is a fail-safe. You are now driving on the fail-safe mode; if it also fails, you are driving a two-ton missile with effectively no brakes.

Take it to the dealer ASAP! Stop screwing around with it! If it is component A7/3 (SBC unit) it is covered by the extended 25-year warranty. If the failure is elsewhere, pay to repair it, or junk the car, or sell it to someone who can afford to repair it, or injure or kill yourself and/or others when the brakes fail.

You've been registered on this site for four years. Use the "Advanced Search" function in the upper right and read. SBC has been discussed over and over and over. CANBUS has been discussed multiple times. I've posted the technical documentation on the SBC system myself multiple times. I've posted the CANBUS technical documentation multiple times. Read and learn *before* your car breaks.
Thanks for the information even i dont appreciate the tone. I HAVE used the search function but with little success finding answers to my specific codes. And i dont need to ”read and learn before my car breaks”. Im not a pro mechanic. I came to the forum to find answers to an issue that appeared.

I cleared the codes and to my surprise the SBC code cleared and only returned a ”SBC time out” code which is a bit strange at 120k km. Is the a time limit in the system in addition to the pedal activation limit.



I know of the call back on the SBC but it might not, as usual, cover other countries than the US. Im in Sweden. Will check.

The only other code i got back was this which would indicate the clockspring i think. It has started making sounds when turning the wheel.



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