I have a 2005 C2s and recently had my brakes done. I also had the brakes flushed. The brakes feel spongy and the pedal gets hard once it is pumped once or twice. Question is do you think there is air in the system? If so I heard I might need the dealer with a PIWIS to bleed the brakes. Or can the brake booster be going bad? I have had a few BMW's and this would happen when the brake booster went bad? Please let me know what you think or any experience with this issue?

 

i thought air in system meant mushy all the time, not hard pedal. ??

i'm pretty sure even if there is air in the system, you dont need Pwiz to flush. technically you need it to flush the ABS but there is minimal fluid in there and that can easily be "flushed" by inducing ABS to kick in while driving. some folks bleed, drive to induce ABS, then bleed again but IMO not really necessary.

in any event, did it feel like that before the "recent" shop bleed? if not, i'd take it back and make them fix whatever they did wrong.

 

I was told by the mechanic, that they used OEM brand textar brake pads, and he thinks that they are the problem. He says they are not the same as the OEM Porsche bakes. This is why the brakes do not have grip and they feel spongy according to him. Does this make sense?

 

No. OEM means original equipment part. Blowing smoke at you. Get angry and have them fix the problem. Brakes not right means they sent you home with a potentially dangerous condition. Stop being nice.

 

I bled my brakes on a 997.2 without PIWIS.
SOunds like someone needs to "Redo" their job!
:-)
be nice, be firm. No need to fight. Just ask the mechanic, if this happened to you would you be happy?
Have them flush it again and see if it persists. But the whole saga about the pads, not buying that.
If it is the pad it would be all the time, the texture/firmness of the pad is the same if you press on the brake pedal once or twice. It might feel different if it overheated, but not with a couple of brake pedal application

 

Pedal pressure has nothing to do with the pads. Unless bad pads are causing you to boil the fluid fate a long hard run like,on a track.
Your fluid wasn't bled properly and that's why they are soft. You mention that they get from after you pump the? Classic sign of air in the lines.

Btw, why are they putting crap pads on your car? Either they're OEM or they're not. OEM pads are great and shouldn't do this at all. I would get firm and demand they do the job right.