Replacing your own rotors and pads with SBC

[Alex Crow]

if you trawl through all the danger of death risks and all the other usual wis-net blurb the actual process is very simple. spinning n/s wheels and connecting star afterwards is not necessary. like i said it`s just lock/unlock blah blah. never put the key in while disabled though, obviously.

 

[television]

I still cannot find it

 

[Alex Crow]

if it helps malc, the wis doc no. is AR4246P0005TX, should probably have dots and dashes in too. here`s a bit of the copy and paste......


1 Raise vehicle using lifting platform until
wheels are free
2 Open the side window on the driver's side
3 Switch off all electrical consumers of the i Vehicles with Keyless Go code 889:
vehicle and remove the key from the ignition Press start/stop button repeatedly until
switch ignition is switched off.
Disable the SBC self-test
4 Close vehicle doors and leave vehicle i Vehicles with Keyless Go code 889:
centrally locked for min. 30 seconds (t1) remove Keyless Go cards or key from the
vehicle and store outside of transmitter range
(for at least 2 minutes).
i During this time the run-on of the SBC
brake system elapses.
5 Unlock vehicle for at least 15 seconds (t2). i The brake pedal must not be pressed any
more from now on.
i An SBC self-test may run during this time.
6 Lock vehicle i In order to prevent people getting in.
i If the engine hood is unlocked when the
vehicle is locked, the alarm system is
triggered.
i 15 seconds after locking the following i The vehicle must not be unlocked under
operations can be carried out in the wheel any circumstances when working on the
brake area: brake system.
N Replace front and rear brake pads,
N Detach/attach front and rear brake disks,
N Remove/install parking brake shoes
Once the operations are completed the
application routine must be activated
i By unlocking, the brake application
routine is started and the brake pads are
applied.
Activate application routine of brake
pads
i The hydraulic unit temperature must be a
maximum of 80 °C
Copyright DaimlerChrysler AG 7/25/06 G/06/06. This WIS printout will not be recorded by the update service. Page 2
7 Unlock vehicle
8 Switch on ignition (Z2) i Through the open side window.
i Vehicles with Keyless-Go code 889:
Do not activate any Keyless Go functions for
the following work.
9 Switch off ignition (Z0), wait 1 to 5 seconds i Do not start engine!
(t3) and switch ignition on again (Z2)
i The ignition remains switched on for the
further steps.
10 Rotate rear left wheel swiftly and evenly in i Turn the wheel for at least 3 seconds (t4)
the running direction (1 to 2 revolutions/s (n)) and then stop the
wheel.
11 Rotate the front left wheel swiftly and evenly i The left front wheel must be rotated no
in the running direction more than 60 seconds (t5) after the left rear
wheel.
Rotate the wheel (1 to 2 revolution(s) (n)) until
it is stalled automatically.
Flashing on and off 3 times (A) confirms
successful activation:
The application routine is started.
The front and rear brake pads are applied
several times.
After approx. 50 seconds the
application routine is completed.
12 Lower vehicle and switch off ignition (Z0)
13 Start the engine and depress the brake pedal 5 i If a fault message is displayed in the
to 10 times multifunction display: D
Repeat activation of application routine. If the
error message continues to be shown in the
multifunction display after repeating the
application routine several times: D
Apply the brake pads using STAR
DIAGNOSIS, read out and erase diagnostic
trouble code memory.
H Connect STAR DIAGNOSIS and read out fault AD00.00-P-2000-04A
memory
STAR DIAGNOSIS diagnosis system *WE58.40-Z-1013-06A
Workshop equipment/MB testers (see Workshop Equipment Manual)
WE58.40-Z-1013-06A STAR DIAGNOSIS Compact diagnosis system for passenger cars, order number 6511 1801 00
Copyright

 

[television]

Thanks,, I can remember seeing this on Benzworld come to think of it,,I will look now on wis

 

[pmay805]

I can't believe Mercedes has made replacing brake pads and rotors so difficult. Is this SBC system really worth all this extra effort?

 

[television]

I can't believe Mercedes has made replacing brake pads and rotors so difficult. Is this SBC system really worth all this extra effort?

Oh yes,, the joy of paying out for a £1k pump makes it all worthwhile

 

[turbopete]

Oh yes,, the joy of paying out for a £1k pump makes it all worthwhile

haha! thatll be why they binned it on later cars then Malcolm! :lol::lol::lol:

 

[pmay805]

if it helps malc, the wis doc no. is AR4246P0005TX, should probably have dots and dashes in too. here`s a bit of the copy and paste......


1 Raise vehicle using lifting platform until
wheels are free
2 Open the side window on the driver's side
3 Switch off all electrical consumers of the i Vehicles with Keyless Go code 889:
vehicle and remove the key from the ignition Press start/stop button repeatedly until
switch ignition is switched off.
Disable the SBC self-test
4 Close vehicle doors and leave vehicle i Vehicles with Keyless Go code 889:
centrally locked for min. 30 seconds (t1) remove Keyless Go cards or key from the
vehicle and store outside of transmitter range
(for at least 2 minutes).
i During this time the run-on of the SBC
brake system elapses.
5 Unlock vehicle for at least 15 seconds (t2). i The brake pedal must not be pressed any
more from now on.
i An SBC self-test may run during this time.
6 Lock vehicle i In order to prevent people getting in.
i If the engine hood is unlocked when the
vehicle is locked, the alarm system is
triggered.
i 15 seconds after locking the following i The vehicle must not be unlocked under
operations can be carried out in the wheel any circumstances when working on the
brake area: brake system.
N Replace front and rear brake pads,
N Detach/attach front and rear brake disks,
N Remove/install parking brake shoes
Once the operations are completed the
application routine must be activated
i By unlocking, the brake application
routine is started and the brake pads are
applied.
Activate application routine of brake
pads
i The hydraulic unit temperature must be a
maximum of 80 °C
Copyright DaimlerChrysler AG 7/25/06 G/06/06. This WIS printout will not be recorded by the update service. Page 2
7 Unlock vehicle
8 Switch on ignition (Z2) i Through the open side window.
i Vehicles with Keyless-Go code 889:
Do not activate any Keyless Go functions for
the following work.
9 Switch off ignition (Z0), wait 1 to 5 seconds i Do not start engine!
(t3) and switch ignition on again (Z2)
i The ignition remains switched on for the
further steps.
10 Rotate rear left wheel swiftly and evenly in i Turn the wheel for at least 3 seconds (t4)
the running direction (1 to 2 revolutions/s (n)) and then stop the
wheel.
11 Rotate the front left wheel swiftly and evenly i The left front wheel must be rotated no
in the running direction more than 60 seconds (t5) after the left rear
wheel.
Rotate the wheel (1 to 2 revolution(s) (n)) until
it is stalled automatically.
Flashing on and off 3 times (A) confirms
successful activation:
The application routine is started.
The front and rear brake pads are applied
several times.
After approx. 50 seconds the
application routine is completed.
12 Lower vehicle and switch off ignition (Z0)
13 Start the engine and depress the brake pedal 5 i If a fault message is displayed in the
to 10 times multifunction display: D
Repeat activation of application routine. If the
error message continues to be shown in the
multifunction display after repeating the
application routine several times: D
Apply the brake pads using STAR
DIAGNOSIS, read out and erase diagnostic
trouble code memory.
H Connect STAR DIAGNOSIS and read out fault AD00.00-P-2000-04A
memory
STAR DIAGNOSIS diagnosis system *WE58.40-Z-1013-06A
Workshop equipment/MB testers (see Workshop Equipment Manual)
WE58.40-Z-1013-06A STAR DIAGNOSIS Compact diagnosis system for passenger cars, order number 6511 1801 00
Copyright

Hi Alexander,

I don't have the Keyless Go in the detailed instructions that you provided. Is there another set of instructions for the regular key that you insert? Can you tell me where you went to find this and perhaps I can do the search myself? Thanks

 

[Alex Crow]

ok, it is actually far simpler than it seems. to de-activate the sbc system...


all keys removed from vehicle, all doors closed.
lock for minimum 30 secs
unlock for minimum 15 secs
lock
wait minimum 15 seconds.


you can now perform all brake fluid changes, brake pad/caliper/hose changes safely. BUT REMEMBER NOT TO UNLOCK THE VEHICLE OR TRY TO OPEN ANY DOORS (eg reach in through open window to open door).

to reactivate you are supposed to...


unlock
turn ignition key to position 2
turn key back to position 1, for between 1 to 5 seconds (no more than 5, no less than 1!!)
turn key back to position 2
rotate n/s/r wheel 1 to 2 revolutions per second for at least 3 seconds
rotate n/s/f wheel within 60 seconds
indicators flash 3x times
brake pads are 'applied' (pushed up to disks)
turn key back to position 0
start car
depress brake pedal
ensure no warning lights are illuminated.

now, the first part is VERY simple, and absolutely necessary. the second part used to re-activate the system is complex and not vital in practice, in fact this is usually ignored - the guys just start up the engine and press the pedal once, sbc does the rest. but in the interests of safety always make sure you have the correct pedal travel and power assistance BEFORE driving!!

 

[124coupe]

After its gone to sleep (vehicle stationary, key out, remote locked and then left >20 seconds), SBC will wake up (and therefore MAY decide to do the pre-drive selfcheck including the potentially disasterous high-pressure squeeze..) if you do any of :

Open a door (or the boot/hatch!)
Operate central locking
Press the brake pedal
Operate the handbrake (oh yes!)
Turn the key to position1

Otherwise it won't.....

Best not to leave the new pads in the boot while you remove the old ones!!

Also best to have the bonnet down because its linked to the alarm.

I have used this process 10s of times now (plus the position 2/1/2 shuffle to reactivate) with no problems at all.

Occasionally there is a brief red cluster during the first couple of seconds if the new pads are a long way from the pistons and therefore need a long squeeze before pressure builds up.

What's the latest re any process for non-Star bleeding of this system? The official route takes over an hour and 1.5L of fluid. (I haven't attempted to do it without).

 

[Alex Crow]

the sbc system can be reliably bled for a fluid change by disabling the sbc as my earlier post and using a pressure bleeder. we usually bleed through about 1L of fluid, and charge 1/2 hr. dead easy and trusted to the grease monkeys. we do always check for leaks at the nipples after, just in case.

enclosed is part of the wis document, if you open in a new tab and view at about 300% it should be legible. this is the best i can do as the pdf is too large to attatch to a post here. i would be happy to provide the full pdf if the admins could make that possible somehow?

 

[television]

I still think that it is safer by disconnecting the battery,,I would never trust that method

 

[Alex Crow]

this method is used and certified by MB. do not believe that they always use star to disable, this is just not the case. the jpeg i posted came straight from the wis document i quoted. we change w211 brake pads every day with no problems.

 

[television]

Yes I believe that is fine when you feel safe and happy with it. I did see the document year ago on a USA forum, I know that it works as you still have all of your fingers, most of us only do it say once or twice in 3 years

 

[Alex M Grieve]

Yes I believe that is fine when you feel safe and happy with it. I did see the document year ago on a USA forum, I know that it works as you still have all of your fingers, most of us only do it say once or twice in 3 years

Do brake pads ever need replacement? Mine seem fine.

 

[television]

Do brake pads ever need replacement? Mine seem fine.

As long as you never use the brake pedal,,then they will see the life of the car out

If you leave the pads to wear away and ignore the warning lamp,,you will be reminded that they should be replaced, when when you brake the car sounds like a train, when the iron to iron makes contact.

 

[LYNALL]

dead easy and trusted to the grease monkeys.

I bet they would love the hear you say that!



Lynall

 

[Alex Crow]

I bet they would love the hear you say that!



Lynall

i am not always so nice about them.

not worth worrying too much about brakes though, they only slow you down.

 

[television]

not worth worrying too much about brakes though, they only slow you down.

As long as the SBC is still working