Bleeding brakes
 

Had my Indy change the oil reservoir for the brake fluid. Problem was he didn’t knew that air would go in the abs so now I send the car to another Indy trying to get the air out of the abs and brakes. Before when you wanted to brake you had to push the brakes down until the floor, after bleeding the brakes are working better but still when I drive slowly towards the red lights abd want to brake the brakes are getting very soft again so driving the car seems very dangerous like this, have tried the hard breaking on a rainy day to and that didn’t fix it. Anyone knows what to do ? Also a picture attached what I have changed

You need to go to a dealer or to an indy which specializes in BMWs. They will hook up a diagnostic program like ISTA to activate the ABS while bleeding the brakes. If the brakes feel spongy it's not safe to drive the vehicle, so get this done soon. Good luck.

Yes that they already did twice but it’s still spongy. I was reading it that only the dealer has good equipment to really get all the air out of the system. Because the Indy will do the bleeding tire by tire and the dealer 4 at once. It’s only a big spongy when I drive very slow and want to stop the car.

Take it to the dealer. I had to do this once. Shame on the indy that replaced the reservoir but couldn't handle the job. Why did you replace it?

You can’t believe it but there was a whole in the reservoir. Really don’t know how that could happen. Yes the Indy didn’t knew about the bleeding process so he just took it off and all the oil flush out of it.

@lightlytoasted do in need to open the valves manually again also under each tire if I do the abs bleeding activation by ISTA ?

Yes. Ista allows the valve circuits in the abs unit to be opened to drive bubbles out...but you still need to flush each wheel.

It can be a real pita.

Ufff seems like a dealer job

Did they use a pressure system in addition to activating the abs/stability system? The pressure combined with the vibrating is what gets all the air out. Something like this https://www.ecstuning.com/b-motive-p...eder/motivepb/


In ISTA+ go to vehicle management / service function / chassis and suspension / traction control / brake bleeding routine / brake bleeding procedure. This option will be grayed out unless you let if you let ISTA+ perform a full vehicle test first.

Just got a appointment with the dealer but they told me they want the car probably for a week, do they need such a long time to bleed brakes ?

Uggh. No. That seems excessive. 1 day. Find another dealer? Just tell them, be specific, that you just need a brake fluid flush including activation of the ABS system. Shouldn't be a big deal honestly.

How do you get ISTA+. Asking for a friend...

For your friend.....

https://www.bimmerfest.com/forums/sh....php?t=1023698

Bleeding instructions here.

https://www.e90post.com/forums/showthread.php?t=1410087

No, it's an hour or two job,

The dealer finally did the bleeding of the brakes and abs, I have been testing the car and if I put the car on D first gear and don’t give gas and the car slowly moves forward and I try to brake softly then still the pedal goes to the end, does this mean there is more problems in the car ?

One other thing is when I changed the brake deposit I bought a second hand one it was from a vom: BMW E70 X5 40d xDrive 2011 and my car is a E70 30d 2007 would that be the problem

If the dealer returned the vehicle to you in that condition, that's really bad. If you can press the brake pedal to the floor, either there is air in the system (unlikely, since they just bled it) or there's a problem with the brake master cylinder. They should have tested the brakes, and should never have returned the vehicle to you if the brakes aren't working properly.

They said they tested the brakes and they were working fine. They didn’t test it how I did the testing by driving very slowly. Also they put a notice on the invoice saying if you still have the same problem then it could be the brake booster or deposit

Went to the bmw today and got quoted 1800$ for repair of brakes. They need to change brake booster and brake deposit. I’m really thinking to get it done or not.

what is a "brake deposit"?

Brake oil deposit

I dont know if it is a language thing, or something the dealer said and you are just repeating...but I have no idea what a brake oil deposit is... and how you change a brake oil deposit.


Is it a brake fluid reservoir?


You already replaced this right? Or did you install the wrong one?

Yes your right it’s reservoir

Yes I changed it with a second hand one I bought on eBay It could be that it was already not working before I installed it. Now bmw wants to change all these other parts to

Well.... you originally change the reservoir, and couldnt bleed. Finally took it to the dealer, they bled but told you the booster may be bad and you should install the right reservoir if it didnt work


It didnt work, now they are saying 'change those parts'.


You COULD price out parts and have someone (or you) replace them. Then bleed, maybe take to dealer for bleed.

or pay the 1800.


Good luck!