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Electronic Parking Break Sticking

J Roc

Member
Dec 30, 2017
32
35
USA
After I leave my car parked for a few hours I notice that when initially put the car in reverse or drive, it sounds like the what I think is a momentary delay in the electronic parking break releasing (first time it happened I thought my tires might have froze to the ground and That was making the noise) but it has since warmed up and the sound still happens. Doesn’t happen if I throw it into park and back into drive or reverse again unless I let the car sit for an extended period.

Thoughts?
 

Frizull

Member
Nov 28, 2016
18
26
Geneva, Switzerland
This happens to our car as well. We've narrowed it down to the humidity. The longer the park, the louder the *clunk*, especially when driven trough rain before parking. Sometimes creep is even too weak to overcome the braking force. Service Center suggested it's probably a fine layer of rust, and they might be right, because it doesn't happen if we heat up the brakes before parking.
 
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Sawyer8888

Member
Mar 16, 2017
422
421
South Florida
especially when driven trough rain before parking.

This is my experience as well. If the brakes are wet as a result of rain when parking, then the brakes stick the following morning when I attempt to back out of my garage. It is an unpleasant sound. Fortunately this hasn't happened in a while, primarily because it hasn't rained much.
 

J Roc

Member
Dec 30, 2017
32
35
USA
This is my experience as well. If the brakes are wet as a result of rain when parking, then the brakes stick the following morning when I attempt to back out of my garage. It is an unpleasant sound. Fortunately this hasn't happened in a while, primarily because it hasn't rained much.

It’s certainly unpleasant. One time it was so loud I thought I lost a piece of my car on the parking block similar to this thread:

Always reverse park model S when you see cement parking curbs | Tesla

I don’t have to use my brakes often because of the regen, so hopefully it is just rust.
 

mattack4000

Active Member
Oct 1, 2017
2,371
918
CA
Do you have a new car? If so, you might want to check to make sure it is not busted. My Dec built car is waiting for new parking brakes....
 

J Roc

Member
Dec 30, 2017
32
35
USA
Do you have a new car? If so, you might want to check to make sure it is not busted. My Dec built car is waiting for new parking brakes....

I took delivery at the end of October. If it was busted, wouldn’t it happen more often after taking the car out of park?
 

mattack4000

Active Member
Oct 1, 2017
2,371
918
CA
No idea, it's definitely quirky. Mine threw a message when it wasn't sticking. Once the message went away, the parking brake would only engage partially (I don't hear the noise much from the rear, before it was loud).
 

Ande

Member
Jul 28, 2017
736
542
Norway
.. this it totally normal for moist/wet conditions on any car , the only difference is that you may have not noticed it in the same way in an IC car due to the noise.
 

Shane Lahousse

New Member
Aug 6, 2015
1
0
Ann Arbor, MI
I agree the issue is related to parking brake sticking with slight rusting since it correlates with any rain or precipitation. The other aggravating factor is the brakes never hear up enough to get rotors warm enough to dry off any moisture. My vehicle is new in Dec 2018 and it does it pretty much every morning and evening with rain and snow melt through winter. Very annoying, it scares the crap out of wife. Biggest issue is having to explain to passengers. "High performance breaks will stick after sitting"


J
oc, post: 2507499, member: 70029"]After I leave my car parked for a few hours I notice that when initially put the car in reverse or drive, it sounds like the what I think is a momentary delay in the electronic parking break releasing (first time it happened I thought my tires might have froze to the ground and That was making the noise) but it has since warmed up and the sound still happens. Doesn’t happen if I throw it into park and back into drive or reverse again unless I let the car sit for an extended period.

Thoughts?[/QUOTE]
 

quickstrike12

Member
Jun 13, 2018
605
449
Fort Worth Texas
Mine used to do this to me after every time I washed it and parked it in garage overnight. I’ve since learned to go around the block and use the brakes to heat them and dry them and the pads off. it’s just moisture between the pads and discs adhering to each other. Will do it after sitting in humidity or rain, etc....
We don’t have a transmission....a Tesla uses small calipers to clamp onto the rotor as our parking brake.
 

Patrick W

Active Member
Mar 17, 2015
1,476
882
SLC, UT
My 2016 S does that all the time if I've driven through rain or snow before parking for the night. Yeah, it is a bit disconcerting but service tells me it's nothing to worry about.

Surprisingly the new S I picked up last month does not do it even though I've driven through a lot of rain and some snow. So maybe I'm just lucky or more likely Tesla made some sort of change to the braking system.
 

Droschke

Active Member
Mar 8, 2015
2,451
4,349
Future
In rainy days, this is what I do to avoid the issue after parking the car in my garage:

- Put in the Park
- Exit from the car
- Use Wheel Chocks in the front and backside of the tires
- Back inside the car
- Put the car in "Tow Mode"
- Exit from the car
- Leave a pre-made note on the driver seat "Wheel Chocks On"
(I only plugin after the car has gone to sleep, otherwise it goes to the Park mode)

The car stays in the Tow Mode (no parking brakes applied) and stationary (due to the Wheel Chocks)

Next morning:
- Back to he car, take it out of the Tow Mode
- Put it in the Park mode
- Exit from the car
- Take the Wheel Chocks off the wheels
- Back to the car and pull out of the garage

No parking brake sticking issue, no loud clunking sound. It's a bit of inconvenience but it works!
 

ucmndd

Well-Known Member
Mar 10, 2016
6,413
11,962
California
In rainy days, this is what I do to avoid the issue after parking the car in my garage:

- Put in the Park
- Exit from the car
- Use Wheel Chocks in the front and backside of the tires
- Back inside the car
- Put the car in "Tow Mode"
- Exit from the car
- Leave a pre-made note on the driver seat "Wheel Chocks On"
(I only plugin after the car has gone to sleep, otherwise it goes to the Park mode)

The car stays in the Tow Mode (no parking brakes applied) and stationary (due to the Wheel Chocks)

Next morning:
- Back to he car, take it out of the Tow Mode
- Put it in the Park mode
- Exit from the car
- Take the Wheel Chocks off the wheels
- Back to the car and pull out of the garage

No parking brake sticking issue, no loud clunking sound. It's a bit of inconvenience but it works!

And here I just apply my brakes lightly a couple times right before I get home.

But hey, A for effort.
 

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