SBC pumps

Clkrichard

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I know that these can fail after a specific number of brake applications and that refurbishment is theoretically not possible.
I also know that having the counter reset is possible but means taking a calculated risk. I guess the warning message doesnt necessarily point to pump failure and more to the usage count though.
I also know MB have pretty much stopped contributing and replacement costs are the wrong side of £1,000.
My question therefore is one of prudent maintenance.
Can Star determine the number of brake applications left before the counter triggers the first warning ? I.e. can you get a degree of advance warning ?
 

television

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Nope no rhyme nor reason on how it works some go 100's k miles others do not get past 50k. It has to be when the pump cannot reach the required pressure during the running time
 

_Taz_

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There is a counter in developer mode ( for some reason 300,000 cycles come to mind, probably more like 3 million ! )...

this is picked from the web... :)

In SD Developer mode you need to go to:
Entwickelingsdaten (developer data) ---> ansteueringen (control gear) ---> Gesamstliste aller Ansteuerungen (complete list of all the control circuits).

To see how many times brake has been pressed there is a line that says: Bremsenzahler (DJ_GetBrLive) (brake payer (dj_getbrlive)).


BUT, as Malcolm says... some SBC units don't even get 1/2 way to here & just fail ?

Maybe it's poor fitting technique, or I suspect people aren't renewing their brake fluids as per MB's schedule...

Mine certainly didn't look like it had been done... I suppose the theory is that it takes a hammering & as the fluid doesn't circulate as such, the fluid around the pump ( which I am hoping is also used as a lubricant ) breaks down slowly = wear.
:)
 

television

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The fluid is not pumped as such, it goes to the calipers as any other car and no return....they self check every 17 applications.

A car used in the rain will give a much higher usage count than one that never goes into the rain.

Distronic uses the brakes, just so many variables
 
OP
C

Clkrichard

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  • Thread Starter
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Wonderful brakes but not one of MBs best engineering efforts then !
I have just had my fluid changed at 80k miles and the pump is covered by warranty for another 18 months so I will stop worrying for now !
The warranty will outlive my usage of the car ......
 
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