Parking brake issue
05-23-2018, 11:20 AM
#1
AudiWorld Newcomer
Thread Starter
Join Date: May 2017
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
Parking brake issue
I have a 2017 A4 Prestige with less than 14K miles. Last four months or so, after driving in rain and letting the car
sit in the garage for up to 24 hours with the parking brake on, it occasionally locks up and will not release until I hit the
throttle hard. It then releases with a loud bang. Very disconcerting. I always manually release the parking brake before
trying to back out. Sometimes its OK, sometimes it is lockd up. So far the dealer has been unable to replicate.
Problem is getting progressively worse. Anybody experience this or have any suggestions? Thanks!
sit in the garage for up to 24 hours with the parking brake on, it occasionally locks up and will not release until I hit the
throttle hard. It then releases with a loud bang. Very disconcerting. I always manually release the parking brake before
trying to back out. Sometimes its OK, sometimes it is lockd up. So far the dealer has been unable to replicate.
Problem is getting progressively worse. Anybody experience this or have any suggestions? Thanks!
05-23-2018, 04:03 PM
#3
AudiWorld Senior Member
That is normal. Rust is forming on the brake disks and causing the pads to stick a little. It happens to me after I wash or rain, it can even do when the parking brake is not on. The effect will probably be less if you do not put the parking brake on in the garage. If you have a manual just leave it in gear, I assume your garage is level.
05-23-2018, 04:58 PM
#4
AudiWorld Senior Member
I've certainly noticed the 'loud bang' after the car has been sitting for half a day or whatever after rainy weather. In my experience it usually happens after putting the car in drive and releasing the brake pedal.
I'm not sure this really has anything to do with the parking brake per se, or just the brakes in general...
Is your car a DSG or manual?
I'm not sure this really has anything to do with the parking brake per se, or just the brakes in general...
Is your car a DSG or manual?
05-23-2018, 06:11 PM
#5
AudiWorld Newcomer
Thread Starter
Join Date: May 2017
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
DSG. I’ve had a number of electro-mechanical parking brakes in the past and never had this kind of problem.
Car is almost 2 years old and no problem til last four months and progressively more violent getting it to
break loose. You can hear it when the parkimg brake is applied, but no sound when it is switchd off on the times it is lockd
up. I suspect some kind of intermittant switch or actuater problm. Dealer still has the car so we will see what they say.
Thanks.
Car is almost 2 years old and no problem til last four months and progressively more violent getting it to
break loose. You can hear it when the parkimg brake is applied, but no sound when it is switchd off on the times it is lockd
up. I suspect some kind of intermittant switch or actuater problm. Dealer still has the car so we will see what they say.
Thanks.
05-23-2018, 08:06 PM
#7
AudiWorld Senior Member
I wonder what's up with the brakes and why they are so sensitive. I know when I get my car washed, the brakes are extremely touchy for the next couple of kms.
One theory a friend mentioned - in a torque converter automatic, you need to have more boosted brakes to compensate for the torque converter. With the DSG, presumably the clutch disengages when you touch the brake pedal, so the brakes don't need to battle a creeping car and would be less boosted...
One theory a friend mentioned - in a torque converter automatic, you need to have more boosted brakes to compensate for the torque converter. With the DSG, presumably the clutch disengages when you touch the brake pedal, so the brakes don't need to battle a creeping car and would be less boosted...
Trending Topics
05-24-2018, 04:04 AM
#8
AudiWorld Senior Member
One theory a friend mentioned - in a torque converter automatic, you need to have more boosted brakes to compensate for the torque converter. With the DSG, presumably the clutch disengages when you touch the brake pedal, so the brakes don't need to battle a creeping car and would be less boosted...
05-24-2018, 07:38 PM
#9
AudiWorld Senior Member
Nope. Audi uses the same brakes and boost on all transmissions in a model line. By your logic there would be a difference between regular automatics and manual transmissions since manuals also disengage the clutch fully. There is no difference in the brakes in these cars.
That being said - aren't the only available options with the 2.0T the manual and the DSG? Is there any engine on the B9 offered with a torque converter auto other than the S4 3.0, which presumably has different brakes anyways...
05-24-2018, 09:06 PM
#10
AudiWorld Member
I don't recall that with previous cars but wonder a bit if the relatively open wheel design or OEM pad choice for stock 2018 allroads contribute to it.