Break Pedal before turnning key
08-05-2006, 06:52 AM
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My Ride: 2005 E60 BMW 525i - BIRTHDAY- 11/04 - EXTERIOR- Amethyst Gray Metallic. INTERIOR- Beige Dakota Leather w/Dark Poplar Grain Wood. OPTIONS- Automatic Transmission, Premium Package, Cold Weather Package, 6-disc CD changer, Bluetooth using Verizon Raza V3c phone, SIRIUS Satellite Radio. ADD-ON's- 545i Chrome Grill, Euro Red Reflectors, Factory all-weater matts & Factory Coat-Hanger.
I don't remember my break pedal being so high and stiff before I start my car, is it always like that? When I turn the key with my foot on the break it goes right down, but I just don't remember it doing that before I always THOUGHT that the break pedal felt normal before I turned the key, is it supposed to be all the way to the top and hard (this sounds soooo wrong 
but I hope u guys know what I mean heheheh)
but I hope u guys know what I mean heheheh)
08-05-2006, 07:07 AM
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I think I know what you mean. I notice the same thing every once in a while but usually after the car has been sitting longer than a day. I think it's related to brake pressure gradually dropping off as the car sits.
At this point, I haven't seen or felt any problems with the braking during driving so for now, I'm thinking it's nothing to worry about. If your car is doing it after only sitting for a short time, then I'd say you should have the system checked for leaks, etc.
At this point, I haven't seen or felt any problems with the braking during driving so for now, I'm thinking it's nothing to worry about. If your car is doing it after only sitting for a short time, then I'd say you should have the system checked for leaks, etc.
08-05-2006, 08:12 AM
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If you push on the brake pedal after you turn off the car you will build up brake pressure and then your brakes will do exactly what you are describing when you get back in your car and start it up again. At least that's kind of what I've noticed.
08-05-2006, 08:29 AM
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Originally Posted by Heiss5' post='319301' date='Aug 5 2006, 07:12 PM
If you push on the brake pedal after you turn off the car you will build up brake pressure and then your brakes will do exactly what you are describing when you get back in your car and start it up again. At least that's kind of what I've noticed.
08-05-2006, 04:33 PM
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My Ride: 2005 E60 BMW 525i - BIRTHDAY- 11/04 - EXTERIOR- Amethyst Gray Metallic. INTERIOR- Beige Dakota Leather w/Dark Poplar Grain Wood. OPTIONS- Automatic Transmission, Premium Package, Cold Weather Package, 6-disc CD changer, Bluetooth using Verizon Raza V3c phone, SIRIUS Satellite Radio. ADD-ON's- 545i Chrome Grill, Euro Red Reflectors, Factory all-weater matts & Factory Coat-Hanger.
Originally Posted by stream' post='319369' date='Aug 5 2006, 07:30 PM
Wow, you've added another post to your count... 
Thanks again everyone... love this forum
08-06-2006, 12:49 AM
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I get that problem too, so this is like a E60 thing. It will build up pressure without me touching the brake after shutting off the car. But it usually happens after 1 night sitting there.
08-06-2006, 03:12 AM
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Originally Posted by Rudy' post='319283' date='Aug 5 2006, 05:07 PM
I think I know what you mean. I notice the same thing every once in a while but usually after the car has been sitting longer than a day. I think it's related to brake pressure gradually dropping off as the car sits.
At this point, I haven't seen or felt any problems with the braking during driving so for now, I'm thinking it's nothing to worry about. If your car is doing it after only sitting for a short time, then I'd say you should have the system checked for leaks, etc.
At this point, I haven't seen or felt any problems with the braking during driving so for now, I'm thinking it's nothing to worry about. If your car is doing it after only sitting for a short time, then I'd say you should have the system checked for leaks, etc.
08-06-2006, 07:43 AM
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First all don't BREAK your pedal, brake pedal sounds better.
Isn't that becsause the residual vauum in the brake booster leaks away over time and you essentially have non-power brakes after the car's been sitting for awhile, until the engine is running and regenerates the vacuum? I notice that in all the power brake equiped cars, not just the e90. May be in the E90 the effect is more noticeable. May be you are not used to put your foot on the brake pedal before the engine starts until the E90 came alone?
Isn't that becsause the residual vauum in the brake booster leaks away over time and you essentially have non-power brakes after the car's been sitting for awhile, until the engine is running and regenerates the vacuum? I notice that in all the power brake equiped cars, not just the e90. May be in the E90 the effect is more noticeable. May be you are not used to put your foot on the brake pedal before the engine starts until the E90 came alone?
08-06-2006, 08:16 AM
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Originally Posted by Blah' post='319508' date='Aug 6 2006, 11:43 AM
Isn't that becsause the residual vauum in the brake booster leaks away over time and you essentially have non-power brakes after the car's been sitting for awhile, until the engine is running and regenerates the vacuum? I notice that in all the power brake equiped cars, not just the e90. May be in the E90 the effect is more noticeable. May be you are not used to put your foot on the brake pedal before the engine starts until the E90 came alone?
(Except for the part about the E90...
)