SBC
MBWorld Fanatic!
Joined: Feb 2009
Posts: 6,897
Likes: 85
From: Central WI (BFE)
SL55, ML500 & Acura TL
I don't know for sure so hopefully someone will pop in with a definitive answer. I do know SBC likes to activate itself. If I walk past my SL with the key fob in my pocket, I will hear what I think is the SBC pump. Same thing if a door is opened. It seems like over time this could drain a battery especially if the battery is getting old.
MBWorld Fanatic!
Joined: Jan 2009
Posts: 9,225
Likes: 1,798
From: V E G A S
1922 Ford Model T / no OBD
SBC takes power from smaller battery, so I would believe there is no way for it to drain main battery.
It comes on for few seconds when the pressure is low and you activate it by opening the door or pressing the remote.
It comes on for few seconds when the pressure is low and you activate it by opening the door or pressing the remote.
MBWorld Fanatic!
Joined: Jan 2009
Posts: 9,225
Likes: 1,798
From: V E G A S
1922 Ford Model T / no OBD
My SBC is quiet enough that I will not hear it unless the car is in garage and nobody drives on the street.
Once again, the SBC should not start on its own when the car is asleep.
You have to act as I said above to start the program.
Per my observation it runs the brakes with each door opening, but it might be taking pressure from reservoir without starting the pump.
Once again, the SBC should not start on its own when the car is asleep.
You have to act as I said above to start the program.
Per my observation it runs the brakes with each door opening, but it might be taking pressure from reservoir without starting the pump.
Senior Member
Joined: Apr 2013
Posts: 271
Likes: 17
From: NYC and LI
2004 Mercedes E500, 2008 Mercedes ML350
Trending Topics
MBWorld Fanatic!
Joined: Apr 2015
Posts: 1,486
Likes: 46
From: dmv
2009 E550 2000 Honda civic mash n' go
MB World Stories
The Best of Mercedes & AMG
Dubai Tuner Gives the Mercedes G-Class An Entirely New Look
Verdad Gallardo
Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish
7 Craziest Things AMG Gas Ever Built
Verdad Gallardo
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know
Verdad Gallardo
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
