Stiff Brake Pedal
05-28-2009, 03:29 PM
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My Ride: 2005 545/SMG Sport Package HUD Logic 7 Bluetooth NAV Cold Weather Package
My 05 545 has a hard brake pedal. Its like stepping on a brick. It moves a certain distance then no more movement and the car has not stopped completely. According to my I-Drive I had 3500 miles left on my front pads so I had both front and rear replaced. No improvement.
Any sugestions?
Any sugestions?
05-28-2009, 03:31 PM
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My Ride: 14 550i
I had the same problem. The brake vacuum pump is probably broken. Take it to the dealer. 
Michael
Acute Performance
Michael
Acute Performance
Originally Posted by kxmills' post='893440' date='May 28 2009, 04:29 PM
My 05 545 has a hard brake pedal. Its like stepping on a brick. It moves a certain distance then no more movement and the car has not stopped completely. According to my I-Drive I had 3500 miles left on my front pads so I had both front and rear replaced. No improvement.
Any sugestions?
Any sugestions?
05-29-2009, 09:42 AM
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My Ride: 2005 545/SMG Sport Package HUD Logic 7 Bluetooth NAV Cold Weather Package
Originally Posted by myfootsmells' post='893444' date='May 28 2009, 07:31 PM
I had the same problem. The brake vacuum pump is probably broken. Take it to the dealer.
Michael
Acute Performance
Michael
Acute Performance
12-10-2009, 05:12 AM
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I recently had this same problem, and after I visited a few shops I was informed my brake booster went out. Rudy was generous enough to create a TIS file on how to replace the brake booster, as well as a few other components (brake fluid reservoir, master cylinder). Here is the link to that document:
https://5series.net/forums/index.php?autoco...i&img=17568
Also, here is a link to a website where you can purchase the brake booster for a 545i:
http://www.partsgeek.com/gbproducts/YN/E17...eek+Google+Base
The mechanic said the OEM booster is basically a pump to assist in heavy breaking, and that the OEM booster just wasn't strong enough. He used a TRW booster, which he said was well made and strong enough to handle the toughest braking situations.
https://5series.net/forums/index.php?autoco...i&img=17568
Also, here is a link to a website where you can purchase the brake booster for a 545i:
http://www.partsgeek.com/gbproducts/YN/E17...eek+Google+Base
The mechanic said the OEM booster is basically a pump to assist in heavy breaking, and that the OEM booster just wasn't strong enough. He used a TRW booster, which he said was well made and strong enough to handle the toughest braking situations.
12-16-2009, 02:07 PM
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My Ride: 2006 525XI, Jet black on Dakota beige. Premium and winter packages. I consider myself a purist and intend to keep my car absolutely stock and shiny.
2008 328I Convertible, Sapphire black on beige interior. Premium package, NAV, iPod adapter.
Retired: 2002 325I, Titanium silver on black leather. Premium package. Absolutely stock and proud of it.
Originally Posted by anand_rahim' post='1074011' date='Dec 15 2009, 11:23 AM
UPDATE: I had my local BMW mechanic replace the brake booster and bleed the brakes. Everything is running fine now.
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