SBC Usage Reset

[gizze]

Didn't realise this feature was removed from later builds. Thought it was a ticking time bomb on them all.

Oh well, SBC removal tomorrow. Dohh!!

Some of the devices also let you choose how much you increase the counter by, so you can choose to increase it by 25%, 50%, 100% etc.

The system is a clever one in the regard that is knows when something is not right and warns you, so why set a limit to the amount of pedal presses? It does seem a bit of a weird thing to do.

 

[jasonyw]

There are no such instructions

Can I use this brush? LOL

 

[jasonyw]

Can I use this brush? LOL

How do I change the brush?

 

[television]

This is a critical safety component and it should only be done with the skills required to do it. This was not a serviceable component.

While yes the motor cover could be removed, the one changing the brushes should have some experience in this field.

 

[jetjockey]

Another update.

New SBC unit removed and original unit refitted. All comms problems cured instantly. Unit reactivated using launch X431 but menu item for bleeding brake system no longer present?
Menu item available with new SBC fitted to car but not with the original. Go figure?

Anyway, resort to power bleeder and start at back near side ( furthest from SBC unit) finish with offside front wheel. Used Mercedes DOT 4+.

Unexpected results...... Original SBC unit running much quieter than before and brakes "firmer" and more responsive. Also, split second pull to one side when braking gone.
Brakes last bled approx 4 yrs ago. Surprised the new fluid has made so much of a difference. Just goes to show that the recommendation to flush the brake system every couple of years is not far off the mark.
Old fluid looked pretty good but not quite as clear as the new.

Now, what to do with the new SBC unit. Return it for refund or place on eBay.

Thanks to everybody for their contributions on this one.

 

[television]

Some more info O found when too late is that it is only good for cars up to about 09-03. I do have the cars serial numbers

put it on Ebay and double your money.

 

[jetjockey]

Could I have those serial No's please?

 

[television]

from chassis A279910 to 31-03-03 for the 211

On the 230 SL500 to chassis F089503 till 30-07-04

 

[jasonyw]

This is a critical safety component and it should only be done with the skills required to do it. This was not a serviceable component.

While yes the motor cover could be removed, the one changing the brushes should have some experience in this field.

I am a graduate electronic engineer for 35 years, is this so difficult to change a brush? All I need is a circuit diagram.

It is the best time to look at it now as it off the road til March next year

 

[television]

You do not need a wiring diagram to change a carbon brush, there is no service information on these pumps. Its a matter of removing the motor casing and changing the brushes.

 

[jasonyw]

Should I open up the high pressure charge pump?

If it so simple, why Merc replace the whole module instead of just replacing the carbon brush?

someone to write this up would be nice

 

[jasonyw]

this is what I found................

IMO I would not let the SBC scare you off.

The unit that gets replaced is under $1100. The ABS pump failed on our ML while I was out of town and my wife took it to the dealer. They hammered her for $1300 when all it really needed was $15 worth of carbon brushes and about and hour of time on my bench.

If it was so bad why did they continue to use it the S and SL class? It was also used in the McLaren SLR super car.
The main reason it was dropped from the W211 was to save money in production.
http://www.benzworld.org/forums/w211-e-class/1710160-adventures-211-shopping-when-sbc-deleted.html

 

[television]

this is what I found................

IMO I would not let the SBC scare you off.

The unit that gets replaced is under $1100. The ABS pump failed on our ML while I was out of town and my wife took it to the dealer. They hammered her for $1300 when all it really needed was $15 worth of carbon brushes and about and hour of time on my bench.

If it was so bad why did they continue to use it the S and SL class? It was also used in the McLaren SLR super car.
The main reason it was dropped from the W211 was to save money in production.
http://www.benzworld.org/forums/w211-e-class/1710160-adventures-211-shopping-when-sbc-deleted.html

The ML has only ever used a normal ABS pump unlike the 211,219 and 230 that uses a SBC system, the system was dropped mainly through the price, we will never know otherwise.

SBC came to an end on the 211 and 219 in 06-06, it continued on the 230 right through till 09 ish as the complete front end had to be re designed.

 

[jasonyw]

The ML has only ever used a normal ABS pump unlike the 211,219 and 230 that uses a SBC system, the system was dropped mainly through the price, we will never know otherwise.

SBC came to an end on the 211 and 219 in 06-06, it continued on the 230 right through till 09 ish as the complete front end had to be re designed.

what I was trying to highlight is this......

all it really needed was $15 worth of carbon brushes and about and hour of time on my bench.


all I was aware before I read the article was sbc were fitted only in E and SL. it probably fitted in ML in the states but not here

 

[television]

what I was trying to highlight is this......

all it really needed was $15 worth of carbon brushes and about and hour of time on my bench.


all I was aware before I read the article was sbc were fitted only in E and SL. it probably fitted in ML in the states but not here

SBC has never been on any ML anywhere. One can fit new carbon brushes to anything, but there are many other factors to take into account if doing so.

 

[star]

As Tv says, its not just the brushes that fail, I personally wouldn't open it up as its such a critical safety item.

 

[jasonyw]

I am a curious engineer, always like to open things up to see how it works, as long as things inside don't start popping out, I cant put it back.

I did open up the wiper stalk once, I did manage to put it back working, but I still couldn't fix the intermittent wiper turning on unintended, even though I cleaned off all the dusts.

 

[st4]

No room in a 211 or 230 for a servo A more robust pump can fail just like any other, the only other way would be 2 pumps, the second one coming into play if the first failed

I beg to differ, facelift 211 has a servo

 

[television]

I repaired my old ABS pump on my V70,,, if I messed up I would still have conventional brakes, not so with SBC.

 

[star]

Try stopping a car without the sbc working, even at walking pace. you might think again about repairing a unit.