Loud clunk on 1st reverse of day

[LesT]

Ok, it’s about 35-40* garage, not too cold, but every time for past month, when I start reversing out of garage, there’s a loud clunk. The rest of the drive, no clunk. Anyone else experiencing this? Anything I can do about it?

 

[garrett5688]

Parking brake?

 

[Cripps]

Likely the parking brake. Mine does the same if it has been sitting and it was wet

 

[Necplur]

Cleveland. So, similar weather. Exact same thing. No idea.

 

[Orwell]

Did the clunk come from the front or back?

 

[camalaio]

This is almost certainly just rusty rotors stuck to the pads after sitting for a while, especially if they've been wet or have salt on them from driving. The first time you move, it breaks free (this is the clunk) and the remaining rust is essentially wiped away by the rest of the drive.

You will especially experience this is a garage, because it allows the salty water to be a liquid (and rust far easier) instead of freezing outside.

Most cars do this. Nothing to be concerned about.

 

[LesT]

This is almost certainly just rusty rotors stuck to the pads after sitting for a while, especially if they've been wet or have salt on them from driving. The first time you move, it breaks free (this is the clunk) and the remaining rust is essentially wiped away by the rest of the drive.

You will especially experience this is a garage, because it allows the salty water to be a liquid (and rust far easier) instead of freezing outside.

Most cars do this. Nothing to be concerned about.

Today, I tried this- pulled forward a few inches, then reversed. No clunk

 

[LesT]

Did the clunk come from the front or back?

Underneath me? It’s very loud.

 

[LesT]

Cleveland. So, similar weather. Exact same thing. No idea.

Just experimenting- this morning I pulled forward a few inches, then reversed out and no clunk! Hmmm

 

[LesT]

Parking brake?

I’ve never used it

 

[Orwell]

I’ve never used it

It's automated when you put your car into Park.

 

[camalaio]

Today, I tried this- pulled forward a few inches, then reversed. No clunk

Not really sure. Could have been a fluke, but it could be something else entirely. Audio/video would help somewhat, otherwise we're just guessing without much to go on.

 

[odingrey]

Almost definitely the brakes unsticking. I get it as well during cold days. It's more obvious or common after washing the car or if it sits for longer than a day.

I back in to my garage, so I've only ever had it pulling forward.

 

[derotam]

After you hear the clunk, stop the vehicle and look at the rotors, you'll probably see where the pad had been stuck to the rotor.

 

[TheLocNar]

Yup. Pads sticking to rotors due to moisture. Nothing to worry about.

 

[shiv.nandak]

If it is the brakes, it's more of a thud instead of a clunk. I have had this on all my previous cars and it's actually not bad in the model 3. My previous car had massive brakes that would require quite a bit of engine power to break free. I would suggest maybe scrubbing your brakes (by using them) right before parking in your garage.