Hi , I had sbc unit replaced this year , the car had done 197,000 , when I had the dreaded service brake light come on I found what it was , I contacted my local dealer about having the unit replaced under the goodwill gesture but they didn't want to know he said it needs a new unit at a figure of £2,000 , I then contacted my local indie who said that a software update can be performed so I contacted the dealer and he was a bit god smacked when I mentioned about the update on the unit ,his words where that not all units can take the update then he said that if the unit do not take the update I will not be able to drive the car typical hey !!! So I thought about going down the second hand route got the unit took the car to my local indie but the unit would not upload to the Ecu, it can only be programed by star , anyway contacted A1 Merc for another pump but he didn't have one and he said u can try 10 units with the same part number but only 1 will upload to the Ecu , so in the end I went for a new pump at cost surply and fit for £1,400 £600 cheaper than the main stealer , please note I did not get the second hand pump from A1 Merc , after looking more into the sbc problem apparently the sbc unit is set with a certain amount of brake compressions by mercedes is this just another method of getting money off hard working people ?
