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#1
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SBC Limit After Reprogramming
As I understand it, originally the SBC (sensatronic brake control) units were programmed to display a fault code after 300,000 applications of the pedal (Mercedes used the language "run out of permissible tolerances, thereby triggering the hydraulic back up function mode"). There was a recall (#2004 050014) so that the units could be reprogrammed.
When a SBC unit has been reprogrammed, what are the new parameters? At what point (i.e. how many applications of the pedal) could one expect to have to replace the unit?
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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles 06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion 19 Honda CR-V EX 61k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife |
#2
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I was with the understanding the SBC had a date programmed in which would flag the fault, (10 years). The units were not showing wear as expected so a re flash would clear the date limitation. I was under the impression once re flashed you are good to go
I seem to get caught behind drivers who would reach the 300,000 pedal depression after driving a block or two!
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92 e300d2.5t 01 e320 05 cdi 85 chev c10 |
#3
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Does this unit contain a battery? If so I seem to remember that it might be able to be pushed 20% farther but after that the battery really is worn out.
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#4
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It has a small battery located against the firewall, passenger side under the airbox. It is a small AGM atv like battery. Most have probably already had this replaced, but not a hard thing to replace at all.
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1959 Gravely LI, 1963 Gravely L8, 1973 Gravely C12 1982 380SL 1978 450 SEL 6.9 euro restoration at 63% and climbing 1987 300 D 2005 CDI European Delivery 2006 CDI Handed down to daughter 2007 GL CDI. Wifes |
#5
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There is a separate battery for the braking system....located in right rear of engine compartment....but I'm not aware of a battery in the unit itself.
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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles 06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion 19 Honda CR-V EX 61k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife |
#6
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The SBC system's back-up battery has no bearing on the life-span of the SBC unit.
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#7
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Accurate enough - but that battery isn't essential for the SBC system's ability to perform as designed.
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#8
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alleged SBC reset tool
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'84 300SD sold 124.128 |
#9
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it seems like this tool is just for temporarily disabling the SBC - e.g. like when refreshing brake pads or changing a wheel bearing
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2012 BMW X5 (Beef + Granite suspension model) 1995 E300D - The original humming machine (consumed by Flood 2017) 2000 E320 - The evolution (consumed by flood 2017) |
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