Rear Brake caliper seized, vehicle vibrate
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1st Gear
Joined: Oct 2015
Posts: 2
Rear Brake caliper seized, vehicle vibrate
Hello,
My B7 A4 avant 6-speed got a seized caliper on the driver side rear. the rotor has rusted surface since caliper pad is not making contact. Once I press brake pedal the car vibrate like crazy. and steering also shaking as well. Not to mention the hand brake feels very weak, I have tried 30 mph and apply hand brake just feel a little bit brake...
I did some research, but I still not able to figure out some of my concerns:
1. If i replace caliper without bleeding, then go to dealer few days later ( so hard to make appointment at my place) to reflush brake system includes all brakes and clutch. Will that damage my new caliper? ( I know I will have few days got only 3 brakes, but it has been about two weeks.)
2. based on picture do I need a new rotor and pad? the pad still got decent amount left.
3. Could the soft hand brake caused by the seized caliper? or I still need to re-adjust the hand brake tension screw.
4. I found steering wheel shake while braking normally caused by front brakes. if I flush the whole system could that solve the problem?
I appreciate for any input. sorry for many questions all together.
Thanks!
My B7 A4 avant 6-speed got a seized caliper on the driver side rear. the rotor has rusted surface since caliper pad is not making contact. Once I press brake pedal the car vibrate like crazy. and steering also shaking as well. Not to mention the hand brake feels very weak, I have tried 30 mph and apply hand brake just feel a little bit brake...
I did some research, but I still not able to figure out some of my concerns:
1. If i replace caliper without bleeding, then go to dealer few days later ( so hard to make appointment at my place) to reflush brake system includes all brakes and clutch. Will that damage my new caliper? ( I know I will have few days got only 3 brakes, but it has been about two weeks.)
2. based on picture do I need a new rotor and pad? the pad still got decent amount left.
3. Could the soft hand brake caused by the seized caliper? or I still need to re-adjust the hand brake tension screw.
4. I found steering wheel shake while braking normally caused by front brakes. if I flush the whole system could that solve the problem?
I appreciate for any input. sorry for many questions all together.
Thanks!
2nd Gear
Joined: Mar 2011
Posts: 860
From: St. Louis, MO
1. If you have the ability to replace the caliper then you can bleed the brakes. Not bleeding could really mess up your stopping. Although I don't think you would really do any damage I would want to bleed as soon as I could.
2. Pads should be replaced. In the picture I can see where the pad was making contact on the inner part of the rotor. Really hard to tell from the picture if the rotor is warped or gouged (on the back side as well). Wouldn't hurt to throw a knew one on and they are not overly expensive.
3. Not sure but on most cars the hand brake works the rear brakes only. So fixing your rear brakes could resolve the issue.
4. No, I don't think flushing is going to remove the shaking. Most likely you have a warped rotor (or two) up front causing that. Will need to replace the rotor(s) that is causing the issue. Of course if you have the car apart for a new rotor you might as well slap a new set of pads on while your at it.
2. Pads should be replaced. In the picture I can see where the pad was making contact on the inner part of the rotor. Really hard to tell from the picture if the rotor is warped or gouged (on the back side as well). Wouldn't hurt to throw a knew one on and they are not overly expensive.
3. Not sure but on most cars the hand brake works the rear brakes only. So fixing your rear brakes could resolve the issue.
4. No, I don't think flushing is going to remove the shaking. Most likely you have a warped rotor (or two) up front causing that. Will need to replace the rotor(s) that is causing the issue. Of course if you have the car apart for a new rotor you might as well slap a new set of pads on while your at it.
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