tool to drive rear break piston to default position

[tintoverano]

hi,

what tool do you use to drive the break piston back to its default position, so the caliper can be placed once the new pads are installed?

newtis shows the tool used in shops, but it is not available here

I tried using a large flathead screwdriver, but it doesn't really work

thanks

 

[Pooltee]

Not 100% sure, but doesn’t it need to be rewound via diagnostics?

 

[tintoverano]

I put EPB into service mode using ISTA D, but that didn't move the piston back

 

[Silverstar]

It can be done without any diagnostic equipment:

https://www.youtube.com/watch?v=BOubDKjnqak

 

[Wing07]

hi,

what tool do you use to drive the break piston back to its default position, so the caliper can be placed once the new pads are installed?

newtis shows the tool used in shops, but it is not available here

I tried using a large flathead screwdriver, but it doesn't really work

thanks

You can remove the electric motor and use a t45 torx to wind piston back in there is a video of YouTube for it. I did it on mine and worked fine

 

[Wing07]

hi,

what tool do you use to drive the break piston back to its default position, so the caliper can be placed once the new pads are installed?

newtis shows the tool used in shops, but it is not available here

I tried using a large flathead screwdriver, but it doesn't really work

thanks

You can remove the electric motor and use a t45 torx to wind piston back in there is a video of YouTube for it. I did it on mine and worked fine

https://youtu.be/Ljq4ATPorXM

 

[tintoverano]

I don't need to remove the motor, since I can get EPB into service mode

but I didn't try simply pushing back the piston, as the guy does it in the video :headbang:

thanks

 

[Nictrix]

As said above remove the motor from the caliper and turn it back using a socket.
Do not apply the handbrake until both sides have been fully rebuilt and then press the brake pedal to seat the new pads on the disc before applying the handbrake.

 

[tintoverano]

thanks all

just finished using ISTA-D

 

[tintoverano]

thanks all

just finished using ISTA-D

recorded videos of the two ISTA-D sessions (is it me or youtube embedding stopped working?)

Electronic Parking Brake (EPB) Workshop Mode using ISTA D for brake pad replacement
[youtube]QgctXhBjxtU[/youtube]

Electronic Parking Brake (EPB) Start up using ISTA D after brake pad replacement
[youtube]Cvto-_WgtKw[/youtube]