Rear brake shoes replacement

[tavernole]

Any information would be appreciated on the sequence required to relieve the pressure on the the pistons to replace the rear electronic operated brake shoes on a 2007 W221 S class

 

[EmilysDad]

Any information on he sequence required to relieve the pressure on the the pistons to replace the rear electronic operated brake shoes on a 2007 W221 S class

if it's like my 14 plate W166 ML, there is a menu in the dash cluster to do this .....

 

[tavernole]

Thanks for that, will have a look.

 

[tavernole]

if it's like my 14 plate W166 ML, there is a menu in the dash cluster to do this .....

How do you get to menu in the dash cluster ???,

 

[EmilysDad]

How do you get to menu in the dash cluster ???,

this is for my car ....

I don't know if it's the same for yours ...

 

[EmilysDad]

or some diagnostic gizmos will access it

 

[tavernole]

Thank you again for that, will have a go

 

[brandwooddixon]

WIS: "Use STAR DIAGNOSIS to bring the brake cables into the assembly position", so unless the menu access works, it looks as if you're reliant on a diagnostic tool.
However, maybe you could also release the parking brake with the drivers door closed but with the window open i.e., reach in through the open window, and then disconnect the battery to prevent the electronic parking brake activating, would achieve much the same.
I believe that the rear mechanism still has a manual adjuster that you may need to slacken off before the rear discs can be removed.