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  #1  
Old 09-19-2012, 02:29 PM
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AB AB is offline
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Mein Auto: '05 645Cic
Is it possible to remove / disable ABS functionality?

I have a 2005 645Ci. For the first time ever, I took it to an Indy shop rather than BMW for service. I received new rear brakes and they put in a new brake booster. The FIRST time I was on the freeway, my car would not go above 60mph and I got an ABS warning message. I chalked it up to them not resetting the sensors and when I tried to reset it, it just set to -15,000 miles.

Anyways, I took it back, and after 3 days, I got my car back. Now, there is a LOT of play in the brake pedal, and it seems very sensitive when I finally get the brakes to engage. Almost like too much assist. Once I get to that point and brake, any excess pedal movement and the car stops VERY abruptly. It definitely doesn't feel like it ever has. Just a few minutes ago, I performed an experiment by doing some hard braking from 25mph on an empty road. The wheels seemed to lock up and the car and the resulting skidding noise ensued. Panic braking in the past with my car (as well as all of my newer cars) results in the ABS system kicking in which prevents the skidding.

Am I crazy here? Could this have been disabled/removed just so they can get on with my car? They had it for 3 days because they were perplexed on how to fix, for whatever reason. Something just doesn't seem right, although all control messages denote "all systems OK".

Any help / insight would be greatly appreciated...thanks!
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  #2  
Old 09-20-2012, 08:47 AM
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AB AB is offline
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:bump:
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  #3  
Old 09-21-2012, 05:00 PM
air_cooled air_cooled is offline
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Mein Auto: E39 528i / E34 540i
This is not the answer you want but in this case i'm going to suggest the Dealer.
If your wheels are locking up to the point of 'skidding' your ABS is not functioning. Strange you have no indication. Does the light illuminate during the lamp test prior to starting the car.?
I'm curious why you got a new brake booster. How did the original fail?
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  #4  
Old 09-22-2012, 07:06 AM
haskindm haskindm is offline
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Mein Auto: 335I Convertible
Three days to do a brake job should have set off all sorts of warnings in your head! Take the car to someone that has a clue before it kills you!
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